Professor Goran Ungar

BSc PhD CPhys

School of Chemical, Materials and Biological Engineering

Emeritus Professor of Polymers and Organic Materials

g.ungar@sheffield.ac.uk

Sir Robert Hadfield Building

Full contact details

Professor Goran Ungar
School of Chemical, Materials and Biological Engineering
Sir Robert Hadfield Building
Mappin Street
Sheffield
S1 3JD

Research interests

Two main research areas: The first is the study of structure and phase behaviour of liquid crystalline (l.c.) and supramolecular polymeric and low molecular systems. Molecular organisation is investigated by diffraction, microscopy and spectroscopy. Applying principles of self-assembly, new molecular architectures are designed and tested in collaboration with synthetic chemists. Current topics include molecular channel matrices, liquid crystalline (LC) dendrimers and amphiphiles, soft quasicrystals, novel thermotropic l.c. phases with 2d and 3d periodicity ("micellar", bicontinuouscubic and non-cubic, columnar, honeycomb), controlled shape supramolecularnano-objects, helical self-assembly of organic semiconductors, LC-directed superlattices of metal and semiconductor nanoparticles for photonic and metamaterials, nano-confined LCs highly conducting polymer electrolytes.

The second area of research is structure and morphology of semicrystalline polymers. In particular, monodisperse model polymers in the form of very long n-alkanes are studied. As a result of these studies the "self-poisoning" crystallization mechanisms has been proposed for flexible polymers. Furthermore, new layer structures and superlattices were discovered. New mathematical models allowed us to describe quantitatively the shapes of polymer crystals. We study structure and structure formation of biodegradable and light-emitting polymers, and investigate structure, morphology, and structure formation in semicrystalline polymers, including biodegradable polyesters and copolyesters, as well as in bulk and thin-film nanocomposites containing nanoparticles, nanofibres and graphene.

The development of advanced instrumentation and analytical methods for x-ray and neutron scattering, specifically tailored for liquid crystal and polymer studies, plays a major part in the group's research. Low and wide angle scattering X-ray detectors are incorporated into purpose-built in-house equipment. Synchrotron experiments are carried out where high source brilliance and high resolution are required. Grazing-incidence small- and wide-angle scattering experiments are carried out at ESRF and Diamond synchrotrons and neutron diffraction at ISIS and ILL. Diffraction techniques are complemented with microscopies: optical, TEM, SEM and, in particular, high-resolution AFM.

Much of the research is done in collaboration with Dr. X.B. Zeng.

Key projects:

Project Leader of the SCALES network “Complexity across lengthscales in soft matter” funded by European Science Foundation.
European FP7 project “Self-Organized Nanomaterials for Tailored Optical and Electrical Properties - NANOGOLD”.
“Materials for Renewable Energy Nature's Way (RENEW)” (PIRE scheme, NSF-EPSRC).

Publications

Journal articles

Lu H, Shi X, Hamaguchi K, Kato T, Uchida J & Ungar G (2025) X-ray diffraction on smectic liquid crystals: Determining molecular arrangement from diffraction intensities. Journal of Molecular Liquids, 126866-126866.
Gabana K, Gehring GA, Zeng X & Ungar G (2024) Quantitative Model of Multiple Crystal Growth Rate Minima in Polymers with Regularly Spaced Substituent Groups. Macromolecules, 57(4), 1667-1676.
Hamaguchi K, Lu H, Okamura S, Kajiyama S, Uchida J, Sato S, Watanabe G, Ishii Y, Washizu H, Ungar G & Kato T (2023) Reentrant 2D Nanostructured Liquid Crystals by Competition between Molecular Packing and Conformation: Potential Design for Multistep Switching of Ionic Conductivity. ChemPhysChem, 24(8).
Hamaguchi K, Lu H, Okamura S, Kajiyama S, Uchida J, Sato S, Watanabe G, Ishii Y, Washizu H, Ungar G & Kato T (2023) Front Cover: Reentrant 2D Nanostructured Liquid Crystals by Competition between Molecular Packing and Conformation: Potential Design for Multistep Switching of Ionic Conductivity (ChemPhysChem 8/2023). ChemPhysChem, 24(8).
Zhao Y, Li Y-X, Cao Y, Mehl GH, Liu F & Ungar G (2023) Effect of mesogenic corona on type and anisotropy of gold nanoparticle superlattice: when can tail wag the dog?. Chemistry – A European Journal.
Zhang H, Liu F, Ungar G, Zheng Z, Sun Q & Han Y (2022) A regime beyond the Hall–Petch and inverse-Hall–Petch regimes in ultrafine-grained solids. Communications Physics, 5.
Cao Y, Tan T, Walba DM, Clark NA, Ungar G, Zhu C, Zhang L & Liu F (2022) Understanding and Manipulating Helical Nanofilaments in Binary Systems with Achiral Dopants.. Nano Lett.
Lei W, Jiao X, Yang S, Ajdari FB, Salavati-Niasari M, Feng Y, Yin J, Ungar G & Song J (2022) Temperature and Stress -resistant Solid State Electrolyte for Stable Lithium-Metal Batteries. Energy Storage Materials.
Zhao Y, Cao Y, Siligardi G, Mehl GH, Liu F & Ungar G (2022) Front Cover: Self‐assembly of Gold Nanoparticles into an Adjustable Plasmonic 3D Lattice using Janus‐type Forked Mesogenic Ligands (Chem. Asian J. 8/2022). Chemistry – An Asian Journal, 17(8).
Percec V, Huang N, Xiao Q, Partridge BE, Sahoo D, Imam MR, Peterca M, Graf R, Spiess H-W, Zeng X & Ungar G (2022) Self-organization of rectangular bipyramidal helical columns by supramolecular orientational memory epitaxially nucleated from a Frank-Kasper σ phase. Giant, 9. View this article in WRRO
Li YX, Gao HF, Zhang RB, Gabana K, Chang Q, Gehring GA, Cheng XH, Zeng XB & Ungar G (2022) A case of antiferrochirality in a liquid crystal phase of counter-rotating staircases. Nature Communications, 13(1).
Yang S-G, Wei Z-Z, Cseh L, Kazemi P, Zeng X-B, Xie H-J, Saba H & Ungar G (2021) Bowls, vases and goblets—the microcrockery of polymer and nanocomposite morphology revealed by two-photon optical tomography. Nature Communications, 12(1). View this article in WRRO
Li Z, Senthil K, Sun Y, Wang Y, Huo H, Hao Y, Liu Y, Chen H, Li H, Zhang Z , Ungar G et al (2021) Nearly monodisperse unimolecular micelles via chloro-based atom transfer radical polymerization. Giant, 7, 100062-100062.
Zhang R, Fall WS, Hall KW, Gehring GA, Zeng X & Ungar G (2021) Quasi-continuous melting of model polymer monolayers prompts reinterpretation of polymer melting. Nature Communications, 12(1). View this article in WRRO
McCarthy MM, Fall WS, Zeng X, Ungar G & Gehring GA (2021) The statistics of the ordering of chiral ribbons on a honeycomb lattice. Journal of Statistical Mechanics: Theory and Experiment, 2021(8), 083203-083203. View this article in WRRO
Lu H, Zhang X, Sakurai T, Li X, Tu Y, Guo J, Seki S, Li CY, Ungar G & Cheng SZD (2020) Frustrated Layered Self-Assembly Induced Superlattice from Two-Dimensional Nanosheets. Nano Letters, 20(12), 8647-8653.
Dressel C, Reppe T, Poppe S, Prehm M, Lu H, Zeng X, Ungar G & Tschierske C (2020) Supramolecular Networks: Helical Networks of π‐Conjugated Rods – A Robust Design Concept for Bicontinuous Cubic Liquid Crystalline Phases with Achiral Ia 3¯ d and Chiral I 23 Lattice (Adv. Funct. Mater. 45/2020). Advanced Functional Materials, 30(45), 2070298-2070298.
Dressel C, Reppe T, Poppe S, Prehm M, Lu H, Zeng X, Ungar G & Tschierske C (2020) Helical networks of π‐conjugated rods – a robust design concept for bicontinuous cubic liquid crystalline phases with Ia3d and chiral I23 lattice. Advanced Functional Materials. View this article in WRRO
Li Y-X, Cheng H, Zeng X, Tao Y, Cheng X & Ungar G (2020) Tailoring liquid crystal honeycombs by head-group choice in bird-like bent-core mesogens. Journal of Materials Chemistry C. View this article in WRRO
Wang L, Partridge BE, Huang N, Olsen JT, Sahoo D, Zeng X, Ungar G, Graf R, Spiess HW & Percec V (2020) Extraordinary Acceleration of Cogwheel Helical Self-Organization of Dendronized Perylene Bisimides by the Dendron Sequence Encoding Their Tertiary Structure. Journal of the American Chemical Society, 142(20), 9525-9536.
Chen L, Chen C, Sun Y, Lu S, Huo H, Tan T, Li A, Li X, Ungar G, Liu F & Zhang M (2020) Luminescent Metallacycle‐Cored Liquid Crystals Induced by Metal Coordination. Angewandte Chemie, 132(25), 10229-10236.
Chen L, Chen C, Sun Y, Lu S, Huo H, Tan T, Li A, Li X, Ungar G, Liu F & Zhang M (2020) Luminescent metallacycle‐cored liquid crystals induced by metal coordination. Angewandte Chemie International Edition. View this article in WRRO
Poppe S, Cheng X, Chen C, Zeng X, Zhang R-B, Liu F, Ungar G & Tschierske C (2020) Liquid Organic Frameworks: The Single-Network “Plumber’s Nightmare” Bicontinuous Cubic Liquid Crystal. Journal of the American Chemical Society, 142(7), 3296-3300.
Chen C, Kieffer R, Ebert H, Prehm M, Zhang R, Zeng X, Liu F, Ungar G & Tschierske C (2020) Chirality Induction through Nano‐Phase Separation: Alternating Network Gyroid Phase by Thermotropic Self‐Assembly of X‐Shaped Bolapolyphiles. Angewandte Chemie, 132(7), 2747-2751.
Chen C, Kieffer R, Ebert H, Prehm M, Zhang R-B, Zeng X, Liu F, Ungar G & Tschierske C (2020) Chirality induction through nano-phase separation: Alternating network gyroid (I4132) phase by thermotropic self-assembly of X-shaped bolapolyphiles. Angewandte Chemie International Edition, 59(7), 2725-2729. View this article in WRRO
Yang S-G, Xie H-J, Saba H, Cseh L & Ungar G (2020) Fluorescence microscopy tracking of dyes, nanoparticles and quantum dots during growth of polymer spherulites. Polymer, 191, 122246-122246.
Scholte A, Hauche S, Wagner M, Prehm M, Poppe S, Chen C, Liu F, Zeng X, Ungar G & Tschierske C (2020) A self-assembled liquid crystal honeycomb of highly stretched (3-1-1)-hexagons. Chemical Communications, 2020(1), 62-65. View this article in WRRO
Li Y, Fan F, Wang J, Cseh L, Xue M, Zeng X & Ungar G (2019) New type of columnar liquid crystal superlattice in double‐taper ionic minidendrons. Chemistry – A European Journal, 25(60), 13739-13747. View this article in WRRO
Partridge BE, Wang L, Sahoo D, Olsen JT, Leowanawat P, Roche C, Ferreira H, Reilly KJ, Zeng X, Ungar G , Heiney PA et al (2019) Sequence-Defined Dendrons Dictate Supramolecular Cogwheel Assembly of Dendronized Perylene Bisimides. Journal of the American Chemical Society, 141(40), 15761-15766.
Li Y, Fan F, Wang J, Cseh L, Xue M, Zeng X & Ungar G (2019) Cover Feature: New Type of Columnar Liquid Crystal Superlattice in Double‐Taper Ionic Minidendrons (Chem. Eur. J. 60/2019). Chemistry – A European Journal, 25(60), 13651-13651. View this article in WRRO
Wang S, Sun H, Wang Z, Zeng X, Ungar G, Guo D, Shen J, Li P, Liu A, Li C & Tang W (2019) Corrigendum to “In situ synthesis of monoclinic β-Ga2O3 nanowires on flexible substrate and solar-blind photodetector” [J. Alloy. Comp. 787 (2019) 133–139]. Journal of Alloys and Compounds, 807, 151768-151768.
Zeng X, Poppe S, Lehmann A, Prehm M, Chen C, Liu F, Lu H, Ungar G & Tschierske C (2019) A Self‐Assembled Bicontinuous Cubic Phase with a Single‐Diamond Network. Angewandte Chemie, 131(22), 7453-7457.
Zeng X, Poppe S, Lehmann A, Prehm M, Chen C, Liu F, Lu H, Ungar G & Tschierske C (2019) A self-assembled bicontinuous cubic phase with a single-diamond network. Angewandte Chemie International Edition, 58(22), 7375-7379. View this article in WRRO
Wang S, Sun H, Wang Z, Zeng X, Ungar G, Guo D, Shen J, Li P, Liu A, Li C & Tang W (2019) In situ synthesis of monoclinic β-Ga2O3 nanowires on flexible substrate and solar-blind photodetector. Journal of Alloys and Compounds, 787, 133-139.
Fall WS, Nürnberger C, Zeng X, Liu F, Kearney SJ, Gehring GA, Tschierske C & Ungar G (2019) An Ising transition of chessboard tilings in a honeycomb liquid crystal. Molecular Systems Design and Engineering, 4(2), 396-406. View this article in WRRO
Nürnberger C, Lu H, Zeng X, Liu F, Ungar G, Hahn H, Lang H, Prehm M & Tschierske C (2019) Soft self-assembled sub-5 nm scale chessboard and snub-square tilings with oligo(para-phenyleneethynylene) rods. Chemical Communications, 55(29), 4154-4157. View this article in WRRO
Zhang R-B, Zeng X-B, Wu C, Jin Q, Liu Y & Ungar G (2019) Square and Hexagonal Columnar Liquid Crystals Confined in Square and Triangular Pores. Advanced Functional Materials, 29(3), 1806078-1806078.
Holerca MN, Sahoo D, Partridge BE, Peterca M, Zeng X, Ungar G & Percec V (2018) Dendronized Poly(2-oxazoline) Displays within only Five Monomer Repeat Units Liquid Quasicrystal, A15 and σ Frank–Kasper Phases. Journal of the American Chemical Society, 140(49), 16941-16947.
Lehmann A, Scholte A, Prehm M, Liu F, Zeng X, Ungar G & Tschierske C (2018) Soft Rectangular Sub-5 nm Tiling Patterns by Liquid Crystalline Self-Assembly of T-Shaped Bolapolyphiles. Advanced Functional Materials, 28(46). View this article in WRRO
Lehmann A, Prehm M, Chen C, Liu F, Zeng X, Ungar G & Tschierske C (2018) Transition between tangential and co-axial liquid crystalline honeycombs in the self-assembly of Y-shaped bolapolyphiles. Chemical Communications, 54(87), 12306-12309. View this article in WRRO
Fall WS, Yen M-H, Zeng X, Cseh L, Liu Y, Gehring GA & Ungar G (2018) Molecular ejection transition in liquid crystal columns self-assembled from wedge-shaped minidendrons. Soft Matter. View this article in WRRO
Prehm M, Enders C, Mang X, Zeng X, Liu F, Ungar G, Baumeister U & Tschierske C (2018) Lamellar Liquid Crystals of In-Plane Lying Rod-Like Mesogens with Designer Side-Chains: the Case of Sliding vs Locked Layers. Chemistry - A European Journal, 24(60), 16072-16084. View this article in WRRO
Stevenson WD, Zou HX, Zeng XB, Welch C, Ungar G & Mehl GH (2018) Dynamic calorimetry and XRD studies of the nematic and twist-bend nematic phase transitions in a series of dimers with increasing spacer length. Physical Chemistry Chemical Physics, 20(39), 25268-25274. View this article in WRRO
Sahoo D, Imam MR, Peterca M, Partridge BE, Wilson DA, Zeng X, Ungar G, Heiney PA & Percec V (2018) Hierarchical Self-Organization of Chiral Columns from Chiral Supramolecular Spheres. Journal of the American Chemical Society, 140(41), 13478-13487.
Wang S, Kong P, Zhang Z, Sun H, Li P, Chen R, Gu B, Ungar G, Wu X, Cheng L , Li X et al (2018) Structure, morphology, and nonlinear optical properties of orthorhombic α-Ca(HCOO)2 single crystals. Optical Materials Express, 8(8), 2238-2238.
Lu H, Zeng X, Ungar G, Dressel C & Tschierske C (2018) Innenrücktitelbild: The Solution of the Puzzle of Smectic-Q: The Phase Structure and the Origin of Spontaneous Chirality (Angew. Chem. 11/2018). Angewandte Chemie, 130(11), 3029-3029.
Lu H, Zeng X, Ungar G, Dressel C & Tschierske C (2018) Inside Back Cover: The Solution of the Puzzle of Smectic-Q: The Phase Structure and the Origin of Spontaneous Chirality (Angew. Chem. Int. Ed. 11/2018). Angewandte Chemie International Edition, 57(11), 2977-2977. View this article in WRRO
Lu H, Zeng X, Ungar G, Dressel C & Tschierske C (2018) The solution of the puzzle of smectic-Q: The phase structure and the origin of spontaneous chirality. Angewandte Chemie, 130(11), 2885-2890. View this article in WRRO
Lu H, Zeng X, Ungar G, Dressel C & Tschierske C (2018) The Solution of the Puzzle of Smectic-Q: The Phase Structure and the Origin of Spontaneous Chirality. Angewandte Chemie - International Edition, 57(11), 2835-2840. View this article in WRRO
Stevenson WD, An J, Zeng X-B, Xue M, Zou H-X, Liu Y-S & Ungar G (2018) Twist-bend nematic phase in biphenylethane-based copolyethers. Soft Matter, 14(16), 3003-3011. View this article in WRRO
Cheng H, Li Y-X, Zeng X-B, Gao H, Cheng X & Ungar G (2017) Trigonal columnar self-assembly of bent phasmid mesogens. Chemical Communications, 54(2), 156-159. View this article in WRRO
Hou X-S, Zhu G-L, Ren L-J, Huang Z-H, Zhang R-B, Ungar G, Yan L-T & Wang W (2017) Mesoscale Graphene-like Honeycomb Mono- and Multilayers Constructed via Self-Assembly of Coclusters. J Am Chem Soc.
Zhang R-B, Zeng X-B & Ungar G (2017) Direct AFM observation of individual micelles, tile decorations and tiling rules of a dodecagonal liquid quasicrystal. Journal of Physics: Condensed Matter, 29(41). View this article in WRRO
Chen ZH, Hwang SH, Zeng X-B, Roh J, Jang J & Ungar G (2017) Solvent diffusion in polymer-embedded hollow nanoparticles studied by in situ small angle X-ray scattering.. Phys Chem Chem Phys, 19(32), 21663-21671.
George S, Bentham C, Zeng X, Ungar G & Gehring GA (2017) Monte Carlo study of the ordering in a strongly frustrated liquid crystal. Physical Review E, 95(6). View this article in WRRO
Matsubara M, Stevenson W, Yabuki J, Zeng X, Dong H, Kojima K, Chichibu SF, Tamada K, Muramatsu A, Ungar G & Kanie K (2017) A Low-Symmetry Cubic Mesophase of Dendronized CdS Nanoparticles and Their Structure-Dependent Photoluminescence. Chem, 2(6), 860-876. View this article in WRRO
Zhang R-B, Ungar G, Zeng X & Shen Z (2017) Diverse configurations of columnar liquid crystals in cylindrical nano- and micropores.. Soft Matter, 22(13), 4122-4131. View this article in WRRO
Stevenson WD, Ahmed Z, Zeng XB, Welch C, Ungar G & Mehl GH (2017) Molecular organization in the twist–bend nematic phase by resonant X-ray scattering at the Se K-edge and by SAXS, WAXS and GIXRD. Physical Chemistry Chemical Physics, 19(21), 13449-13454. View this article in WRRO
Ho M-S, Partridge BE, Sun H-J, Sahoo D, Leowanawat P, Peterca M, Graf R, Spiess HW, Zeng X, Ungar G , Heiney PA et al (2016) Screening Libraries of Semifluorinated Arylene Bisimides to Discover and Predict Thermodynamically Controlled Helical Crystallization. ACS Combinatorial Science, 18(12), 723-739.
Yao X, Cseh L, Zeng X, Xue M, Liu Y & Ungar G (2016) Body-centred cubic packing of spheres – the ultimate thermotropic assembly mode for highly divergent dendrons. Nanoscale Horizons, 2(1), 43-49. View this article in WRRO
Zeng X, Prehm M, Ungar G, Tschierske C & Liu F (2016) Formation of a Double Diamond Cubic Phase by Thermotropic Liquid Crystalline Self‐Assembly of Bundled Bolaamphiphiles. Angewandte Chemie, 128(29), 8464-8467.
Zeng X, Prehm M, Ungar G, Tschierske C & Liu F (2016) Formation of a Double Diamond Cubic Phase by Thermotropic Liquid Crystalline Self-Assembly of Bundled Bolaamphiphiles.. Angew Chem Int Ed Engl, 55(29), 8324-8327. View this article in WRRO
Yen M-H, Chaiprapa J, Zeng X, Liu Y, Cseh L, Mehl GH & Ungar G (2016) Added Alkane Allows Thermal Thinning of Supramolecular Columns by Forming Superlattice—An X-ray and Neutron Study. Journal of the American Chemical Society, 138(18), 5757-5760. View this article in WRRO
Wang SL, Xu H, Wu XP, Li PG, Ungar G, Liu Y, Shen JQ & Tang WH (2016) Structural, magnetic and electrical transport properties of double perovskite Tb2MnCoO6. Journal of Materials Research, 31(8), 1038-1045.
Cao X-Z, Merlitz H, Wu C-X, Ungar G & Sommer J-U (2016) A theoretical study of dispersion-to-aggregation of nanoparticles in adsorbing polymers using molecular dynamics simulations. Nanoscale, 8(13), 6964-6968.
Tschierske C & Ungar G (2016) Cover Picture: Mirror Symmetry Breaking by Chirality Synchronisation in Liquids and Liquid Crystals of Achiral Molecules (ChemPhysChem 1/2016). ChemPhysChem, 17(1), 1-1.
Tschierske C & Ungar G (2016) Mirror Symmetry Breaking by Chirality Synchronisation in Liquids and Liquid Crystals of Achiral Molecules. ChemPhysChem, 17(1), 3-3.
Roche C, Sun H-J, Leowanawat P, Araoka F, Partridge BE, Peterca M, Wilson DA, Prendergast ME, Heiney PA, Graf R , Spiess HW et al (2016) A supramolecular helix that disregards chirality. Nature Chemistry, 8(1), 80-89. View this article in WRRO
Poppe S, Lehmann A, Scholte A, Prehm M, Zeng X, Ungar G & Tschierske C (2015) Zeolite-like liquid crystals. Nature Communications, 6(1). View this article in WRRO
Soberats B, Yoshio M, Ichikawa T, Zeng X, Ohno H, Ungar G & Kato T (2015) Ionic Switch Induced by a Rectangular–Hexagonal Phase Transition in Benzenammonium Columnar Liquid Crystals. Journal of the American Chemical Society, 137(41), 13212-13215. View this article in WRRO
Wang SL, Li PG, Zou YH, Wu XP, Ungar G, Liu YS, Shen JQ & Tang WH (2015) Crystal structure and electrical transport properties of polycrystalline TbMn1−Fe O3. Journal of Physics and Chemistry of Solids, 85, 81-85.
Cseh L, Mang X, Zeng X, Liu F, Mehl GH, Ungar G & Siligardi G (2015) Helically Twisted Chiral Arrays of Gold Nanoparticles Coated with a Cholesterol Mesogen. Journal of the American Chemical Society, 137(40), 12736-12739. View this article in WRRO
Tschierske C & Ungar G (2015) Mirror Symmetry Breaking by Chirality Synchronisation in Liquids and Liquid Crystals of Achiral Molecules. ChemPhysChem, 17(1), 9-26.
Matsubara M, Miyazaki A, Zeng X, Muramatsu A, Ungar G & Kanie K (2015) Rheology of Thermotropic Liquid-Crystalline Dendron-Modified Gold Nanoparticles. Molecular Crystals and Liquid Crystals, 617(1), 50-57.
Partridge BE, Leowanawat P, Aqad E, Imam MR, Sun H-J, Peterca M, Heiney PA, Graf R, Spiess HW, Zeng X , Ungar G et al (2015) Increasing 3D Supramolecular Order by Decreasing Molecular Order. A Comparative Study of Helical Assemblies of Dendronized Nonchlorinated and Tetrachlorinated Perylene Bisimides. Journal of the American Chemical Society, 137(15), 5210-5224. View this article in WRRO
Zhang R, Zeng X, Kim B, Bushby RJ, Shin K, Baker PJ, Percec V, Leowanawat P & Ungar G (2015) Columnar Liquid Crystals in Cylindrical Nanoconfinement. ACS Nano, 9(2), 1759-1766. View this article in WRRO
Wu Y-C, Leowanawat P, Sun H-J, Partridge BE, Peterca M, Graf R, Spiess HW, Zeng X, Ungar G, Hsu C-S , Heiney PA et al (2015) Complex Columnar Hexagonal Polymorphism in Supramolecular Assemblies of a Semifluorinated Electron-Accepting Naphthalene Bisimide. Journal of the American Chemical Society, 137(2), 807-819. View this article in WRRO
Dressel C, Liu F, Prehm M, Zeng X, Ungar G & Tschierske C (2014) Dynamic Mirror-Symmetry Breaking in Bicontinuous Cubic Phases. Angewandte Chemie, 126(48), 13331-13336.
Dressel C, Liu F, Prehm M, Zeng X, Ungar G & Tschierske C (2014) Inside Back Cover: Dynamic Mirror-Symmetry Breaking in Bicontinuous Cubic Phases (Angew. Chem. Int. Ed. 48/2014). Angewandte Chemie International Edition, 53(48), 13293-13293.
Dressel C, Liu F, Prehm M, Zeng X, Ungar G & Tschierske C (2014) Innenrücktitelbild: Dynamic Mirror-Symmetry Breaking in Bicontinuous Cubic Phases (Angew. Chem. 48/2014). Angewandte Chemie, 126(48), 13509-13509.
Dressel C, Liu F, Prehm M, Zeng X, Ungar G & Tschierske C (2014) Dynamic Mirror‐Symmetry Breaking in Bicontinuous Cubic Phases. Angewandte Chemie International Edition, 53(48), 13115-13120. View this article in WRRO
Liu F, Prehm M, Zeng X, Tschierske C & Ungar G (2014) Skeletal cubic, lamellar, and ribbon phases of bundled thermotropic bolapolyphiles. Journal of the American Chemical Society, 136(19), 6846-6849.
Roche C, Sun H-J, Prendergast ME, Leowanawat P, Partridge BE, Heiney PA, Araoka F, Graf R, Spiess HW, Zeng X , Ungar G et al (2014) Homochiral columns constructed by chiral self-sorting during supramolecular helical organization of hat-shaped molecules.. J Am Chem Soc, 136(19), 7169-7185. View this article in WRRO
Zhang R, Zeng X, Prehm M, Liu F, Grimm S, Geuss M, Steinhart M, Tschierske C & Ungar G (2014) Honeycombs in honeycombs: complex liquid crystal alumina composite mesostructures.. ACS Nano, 8(5), 4500-4509.
Chen ZH, Hwang SH, Zeng XB, Roh J, Jang J & Ungar G (2013) SAXS characterization of polymer-embedded hollow nanoparticles and of their shell porosity. Journal of Applied Crystallography, 46(6), 1654-1664.
Dintinger J, Tang BJ, Zeng X, Liu F, Kienzler T, Mehl GH, Ungar G, Rockstuhl C & Scharf T (2013) A self-organized anisotropic liquid-crystal plasmonic metamaterial. Advanced Materials, 25(14), 1999-2004.
Percec V, Sun H-J, Leowanawat P, Peterca M, Graf R, Spiess HW, Zeng X, Ungar G & Heiney PA (2013) Transformation from kinetically into thermodynamically controlled self-organization of complex helical columns with 3D periodicity assembled from dendronized perylene bisimides.. J Am Chem Soc, 135(10), 4129-4148.
Scharf T, Dintinger J, Tang BJ, Mehl GH, Zeng X, Ungar G, Mühlig S, Kienzler T & Rockstuhl C (2013) Liquid crystal plasmonic metamaterials. Proceedings of SPIE - The International Society for Optical Engineering, 8642.
Shcherbina MA, Chvalun SN & Ungar G (2012) Modeling of the shape of polyethylene oxide single crystals and determination of the kinetic crystallization parameters: Theoretical and experimental approaches. Crystallography Reports, 57(6), 860-868.
Chen ZH, Kim C, Zeng X-B, Hwang SH, Jang J & Ungar G (2012) Characterizing size and porosity of hollow nanoparticles: SAXS, SANS, TEM, DLS, and adsorption isotherms compared.. Langmuir, 28(43), 15350-15361.
Liu F, Kieffer R, Zeng X, Pelz K, Prehm M, Ungar G & Tschierske C (2012) Arrays of giant octagonal and square cylinders by liquid crystalline self-assembly of X-shaped polyphilic molecules.. Nat Commun, 3, 1104.
Pucci A, Willinger M-G, Liu F, Zeng X, Rebuttini V, Clavel G, Bai X, Ungar G & Pinna N (2012) One-Step Synthesis and Self-Assembly of Metal Oxide Nanoparticles into 3D Superlattices. ACS NANO, 6(5), 4382-4391.
Ichikawa T, Yoshio M, Hamasaki A, Taguchi S, Liu F, Zeng X-B, Ungar G, Ohno H & Kato T (2012) Induction of thermotropic bicontinuous cubic phases in liquid-crystalline ammonium and phosphonium salts. Journal of the American Chemical Society, 134(5), 2634-2643.
Dintinger J, Tang BJ, Zeng X, Kienzler T, Mehl GH, Ungar G, Rockstuhl C & Scharf T (2012) Optical properties of mesogen-coated gold nanoparticles. Proceedings of SPIE - The International Society for Optical Engineering, 8271.
Mang X, Zeng X, Tang B, Liu F, Ungar G, Zhang R, Cseh L & Mehl GH (2012) Control of anisotropic self-assembly of gold nanoparticles coated with mesogens. Journal of Materials Chemistry, 22(22), 11101-11106.
Lee E, Hong J-Y, Jang J & Ungar G (2012) Crystallization of poly(ethylene oxide) embedded with surface-modified SiO nanoparticles. Polymer International.
Kim HJ, Liu F, Ryu JH, Kang SK, Zeng X, Ungar G, Lee JK, Zin WC & Lee M (2012) Self-organization of bent rod molecules into hexagonally ordered vesicular columns. Journal of the American Chemical Society, 134(33), 13871-13880.
Tschierske C, Nürnberger C, Ebert H, Glettner B, Prehm M, Liu F, Zeng XB & Ungar G (2012) Complex tiling patterns in liquid crystals. Interface Focus, 2(5), 669-680.
Kanie K, Matsubara M, Zeng X, Liu F, Ungar G, Nakamura H & Muramatsu A (2012) Simple cubic packing of gold nanoparticles through rational design of their dendrimeric corona. Journal of the American Chemical Society, 134(2), 808-811.
Theato P & Ungar G (2012) Nanoporous ordered materials: Osmotically shocked. Nature Materials, 11(1), 16-17.
Ungar G (2012) Nobel Prize for quasicrystals. Liquid Crystals Today, 21(1), 25-26.
Liu F, Prehm M, Zeng X, Ungar G & Tschierske C (2011) Two- and Three-Dimensional Liquid-Crystal Phases from Axial Bundles of Rodlike Polyphiles: Segmented Cylinders, Crossed Columns, and Ribbons between Sheets. Angewandte Chemie, 123(45), 10787-10790.
Percec V, Hudson SD, Peterca M, Leowanawat P, Aqad E, Graf R, Spiess HW, Zeng X, Ungar G & Heiney PA (2011) Self-repairing complex helical columns generated via kinetically controlled self-assembly of dendronized perylene bisimides.. J Am Chem Soc, 133(45), 18479-18494.
Liu F, Prehm M, Zeng X, Ungar G & Tschierske C (2011) Two- and three-dimensional liquid-crystal phases from axial bundles of rodlike polyphiles: segmented cylinders, crossed columns, and ribbons between sheets.. Angew Chem Int Ed Engl, 50(45), 10599-10602.
Ungar G, Tschierske C, Abetz V, Holyst R, Bates MA, Liu F, Prehm M, Kieffer R, Zeng XB, Walker M , Glettner B et al (2011) Self-Assembly at Different Length Scales: Polyphilic Star-Branched Liquid Crystals and Miktoarm Star Copolymers. ADV FUNCT MATER, 21(7), 1296-1323.
Prehm M, Liu F, Zeng XB, Ungar G & Tschierske C (2011) Axial-Bundle Phases - New Modes of 2D, 3D, and Helical Columnar Self-Assembly in Liquid Crystalline Phases of Bolaamphiphiles with Swallow Tail Lateral Chains. J AM CHEM SOC, 133(13), 4906-4916.
Zeng X, Kieffer R, Glettner B, Nürnberger C, Liu F, Pelz K, Prehm M, Baumeister U, Hahn H, Lang H , Gehring GA et al (2011) Complex multicolor tilings and critical phenomena in tetraphilic liquid crystals.. Science, 331(6022), 1302-1306.
Ungar G, Percec V, Zeng X & Leowanawat P (2011) Liquid quasicrystals. Israel Journal of Chemistry, 51(11-12), 1206-1215.
Yasuda T, Shimizu T, Liu F, Ungar G & Kato T (2011) Electro-functional octupolar π-conjugated columnar liquid crystals. Journal of the American Chemical Society, 133(34), 13437-13444.
Percec V, Peterca M, Tadjiev T, Zeng X, Ungar G, Leowanawat P, Aqad E, Imam MR, Rosen BM, Akbey U , Graf R et al (2011) Self-assembly of dendronized perylene bisimides into complex helical columns. Journal of the American Chemical Society, 133(31), 12197-12219.
Cheng X, Liu F, Zeng X, Ungar G, Kain J, Diele S, Prehm M & Tschierske C (2011) Influence of flexible spacers on liquid-crystalline self-assembly of T-shaped bolaamphiphiles. Journal of the American Chemical Society, 133(20), 7872-7881.
Kanie K, Sekiguchi J, Zeng XB, Ungar G & Muramatsu A (2011) Phospholipids with a stimuli-responsive thermotropic liquid-crystalline moiety. CHEM COMMUN, 47(24), 6885-6887.
Rosen BM, Peterca M, Huang C, Zeng X, Ungar G & Percec V (2010) Deconstruction as a Strategy for the Design of Libraries of Self-Assembling Dendrons. Angewandte Chemie, 122(39), 7156-7159.
Zharova MA, Usol'tseva NV, Ungar G, Kholodkov IV & Rybkin VV (2010) Peculiarities of the crystal structure of modified banana-shaped mesogen. CRYSTALLOGR REP+, 55(5), 840-844.
Zeng X, Mang X, Liu F, Zhang R, Fowler AG, Cseh L, Mehl GH & Ungar G (2010) Arranging nanoparticle superlattices with liquid crystals. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 240.
Peterca M, Imam MR, Leowanawat P, Rosen BM, Wilson DA, Wilson CJ, Zeng X, Ungar G, Heiney PA & Percec V (2010) Self-assembly of hybrid dendrons into doubly segregated supramolecular polyhedral columns and vesicles.. J Am Chem Soc, 132(32), 11288-11305.
Bramble JP, Tate DJ, Revill DJ, Sheikh KH, Henderson JR, Liu F, Zeng XB, Ungar G, Bushby RJ & Evans SD (2010) Planar Alignment of Columnar Discotic Liquid Crystals by Isotropic Phase Dewetting on Chemically Patterned Surfaces. ADV FUNCT MATER, 20(6), 914-920.
Vinceković M, Pustak A, Tusek-Bozić L, Liu F, Ungar G, Bujan M, Smit I & Filipović-Vinceković N (2010) Structural and thermal study of mesomorphic dodecylammonium carrageenates.. J Colloid Interface Sci, 341(1), 117-123. View this article in WRRO
Ungar G, Liu F, Zeng XB, Glettner B, Prehm M, Kieffer R & Tschierske C (2010) GISAXS in the study of supramolecular and hybrid liquid crystals. Journal of Physics: Conference Series, 247.
Weber CHM, Liu F, Zeng XB, Ungar G, Mullin N, Hobbs JK, Jahr M & Lehmann M (2010) Body-centered cubic phase in 3-arm star mesogens: a torsional tapping AFM and GISAXS study. SOFT MATTER, 6(21), 5390-5396.
Rosen BM, Peterca M, Huang C, Zeng X, Ungar G & Percec V (2010) Deconstruction as a strategy for the design of libraries of self-assembling dendrons. Angewandte Chemie - International Edition, 49(39), 7002-7005.
Zharova MA, Usol'Tseva NV, Ungar G, Zeng X, Yablonsky SV, Yudin SG & Gabdulsadykova GF (2010) Structure and pyroelectric behaviour of a twin-tapered bent core mesogen. Molecular Crystals and Liquid Crystals, 525, 212-218.
Rosen BM, Wilson DA, Wilson CJ, Peterca M, Won BC, Huang CH, Lipski LR, Zeng XB, Ungar G, Heiney PA & Percec V (2009) Predicting the Structure of Supramolecular Dendrimers via the Analysis of Libraries of AB(3) and Constitutional Isomeric AB(2) Biphenylpropyl Ether Self-Assembling Dendrons. J AM CHEM SOC, 131(47), 17500-17521.
Ma Y, Qi B, Ren YJ, Ungar G, Hobbs JK & Hu WB (2009) Understanding Self-poisoning Phenomenon in Crystal Growth of Short-Chain Polymers. J PHYS CHEM B, 113(41), 13485-13490.
Shcherbina MA, Zeng X-B, Tadjiev T, Ungar G, Eichhorn SH, Phillips KES & Katz TJ (2009) Hollow Six-Stranded Helical Columns of a Helicene. Angewandte Chemie, 121(42), 7977-7980.
Ungar G, Tomasić V, Xie F & Zeng X-B (2009) Structure of liquid crystalline aerosol-OT and its alkylammonium salts.. Langmuir, 25(18), 11067-11072.
Zeng X, Liu F, Fowler AG, Ungar G, Cseh L, Mehl GH & Macdonald JE (2009) Ordered Gold Nanoarrays: 3D Ordered Gold Strings by Coating Nanoparticles with Mesogens (Adv. Mater. 17/2009). Advanced Materials, 21(17), NA-NA.
Zeng XB, Liu F, Fowler AG, Ungar G, Cseh L, Mehl GH & Macdonald JE (2009) 3D Ordered Gold Strings by Coating Nanoparticles with Mesogens. ADV MATER, 21(17), 1746-+.
Shcherbina MA, Zeng X-B, Tadjiev T, Ungar G, Eichhorn SH, Phillips KES & Katz TJ (2009) Hollow six-stranded helical columns of a helicene.. Angew Chem Int Ed Engl, 48(42), 7837-7840.
Kieffer R, Prehm M, Pelz K, Baumeister U, Liu F, Hahn H, Lang H, Ungar G & Tschierske C (2009) Siloxanes and carbosilanes as new building blocks for T-shaped bolaamphiphilic LC molecules. SOFT MATTER, 5(6), 1214-1227.
Percec V, Peterca M, Tsuda Y, Rosen BM, Uchida S, Imam MR, Ungar G & Heiney PA (2009) Elucidating the Structure of the Pm(3)over-barn Cubic Phase of Supramolecular Dendrimers through the Modification of their Aliphatic to Aromatic Volume Ratio. CHEM-EUR J, 15(36), 8994-9004.
Prehm M, Liu F, Zeng XB, Ungar G & Tschierske C (2008) 2D and 3D Ordered Columnar Liquid Crystal Phases by Bundles of Bolaamphiphiles with Swallow-Tail Side Chains. J AM CHEM SOC, 130(45), 14922-+.
Glettner B, Liu F, Zeng X, Prehm M, Baumeister U, Walker M, Bates MA, Boesecke P, Ungar G & Tschierske C (2008) Liquid-Crystalline Kagome. Angewandte Chemie, 120(47), 9203-9206.
Ungar G, Zeng XB, Liu F, Tschierske C, Prehm M, Glaettner B, Mehl G & Cseh L (2008) Crystallography of 2D and 3D structures in liquid crystal amphiphiles and nanocomposites. Acta Crystallographica Section A Foundations of Crystallography, 64(a1), C31-C32.
Liu F, Chen B, Glettner B, Prehm M, Das MK, Baumeister U, Zeng X, Ungar G & Tschierske C (2008) The trapezoidal cylinder phase: a new mode of self-assembly in liquid-crystalline soft matter.. J Am Chem Soc, 130(30), 9666-9667.
Glettner B, Liu F, Zeng X, Prehm M, Baumeister U, Ungar G & Tschierske C (2008) Liquid-Crystal Engineering with Anchor-Shaped Molecules: Honeycombs with Hexagonal and Trigonal Symmetries Formed by Polyphilic Bent-Core Molecules. Angewandte Chemie, 120(32), 6169-6172.
Glettner B, Liu F, Zeng X, Prehm M, Baumeister U, Ungar G & Tschierske C (2008) Inside Cover: Liquid-Crystal Engineering with Anchor-Shaped Molecules: Honeycombs with Hexagonal and Trigonal Symmetries Formed by Polyphilic Bent-Core Molecules (Angew. Chem. Int. Ed. 32/2008). Angewandte Chemie International Edition, 47(32), 5862-5862.
Glettner B, Liu F, Zeng X, Prehm M, Baumeister U, Ungar G & Tschierske C (2008) Innentitelbild: Liquid-Crystal Engineering with Anchor-Shaped Molecules: Honeycombs with Hexagonal and Trigonal Symmetries Formed by Polyphilic Bent-Core Molecules (Angew. Chem. 32/2008). Angewandte Chemie, 120(32), 5946-5946.
Cheng XH, Dong X, Huang R, Zeng XB, Ungar G, Prehm M & Tschierske C (2008) Polygonal cylinder phases of 3-alkyl-2,5-diphenylthiophene-based bolaamphiphiles: Changing symmetry by retaining net topology. CHEM MATER, 20(14), 4729-4738.
Zeng XB, Liu F, Xie F, Ungar G, Tschierske C & MacDonald JE (2008) Small angle X-ray and neutron scattering in the study of polymers and supramolecular systems. AIP Conference Proceedings, 989, 68.
Zeng XB, Cseh LL, Mehl GH & Ungar G (2008) Testing the triple network structure of the cubic Im(3)over-bar-m (I) phase by isomorphous replacement and model refinement. J MATER CHEM, 18(25), 2953-2961.
Glettner B, Liu F, Zeng XB, Prehm M, Baumeister U, Ungar G & Tschierske C (2008) Liquid-crystal engineering with anchor-shaped molecules: Honeycombs with hexagonal and trigonal symmetries formed by polyphilic bent-core molecules. ANGEW CHEM INT EDIT, 47(32), 6080-6083.
Kieffer R, Prehm M, Glettner B, Pelz K, Baumeister U, Liu F, Zeng XB, Ungar G & Tschierske C (2008) X-Shaped polyphilics: liquid crystal honeycombs with single-molecule walls. CHEM COMMUN(33), 3861-3863.
Glettner B, Liu F, Zeng XB, Prehm M, Baumeister U, Walker M, Bates MA, Boesecke P, Ungar G & Tschierske C (2008) Liquid-Crystalline Kagome. ANGEW CHEM INT EDIT, 47(47), 9063-9066.
Prehm M, Liu F, Baumeister U, Zeng X, Ungar G & Tschierske C (2007) The Giant-Hexagon Cylinder Network—A Liquid-Crystalline Organization Formed by a T-Shaped Quaternary Amphiphile. Angewandte Chemie, 119(42), 8118-8121.
Prehm M, Götz G, Bäuerle P, Liu F, Zeng X, Ungar G & Tschierske C (2007) Complex Liquid-Crystalline Superstructure of a π-Conjugated Oligothiophene. Angewandte Chemie, 119(41), 8002-8005.
Martinez-Palau M, Franco L, Puiggali J & Ungar G (2007) Isothermal crystallization kinetics and spherulitic morphology of poly(4-hydroxybutyric acid-alt-glycolic acid). J POLYM SCI POL PHYS, 45(18), 2640-2653.
Shcherbina MA & Ungar G (2007) Asymmetric curvature of growth faces of polymer crystals. ABSTR PAP AM CHEM S, 234.
Zeng XB, Xie FN, Ungar G & King SM (2007) Semicrystalline and superlattice structures in linear and branched oligomers. ABSTR PAP AM CHEM S, 234.
Liu F, Chen B, Baumeister U, Zeng X, Ungar G & Tschierske C (2007) The triangular cylinder phase: a new mode of self-assembly in liquid-crystalline soft matter.. J Am Chem Soc, 129(31), 9578-9579.
Zeng XB, Xie F & Ungar G (2007) Semicrystalline and superlattice structures in an asymmetrically methyl-branched long-chain alkane. MACROMOLECULES, 40(16), 5750-5758.
Shcherbina MA, Chvalun SN & Ungar G (2007) Effect of crystallization conditions on the shape of polymer single crystals: Experimental and theoretical approaches. CRYSTALLOGR REP+, 52(4), 707-720.
Shcherbina MA & Ungar G (2007) Analysis of crystal habits bounded by asymmetrically curved faces: Polyethylene oligomers and poly(vinylidene fluoride). POLYMER, 48(7), 2087-2097.
Shcherbina MA & Ungar G (2007) Asymmetric curvature of growth faces of polymer crystals. MACROMOLECULES, 40(3), 402-405.
Prehm M, Gotz G, Bauerle P, Liu F, Zeng XB, Ungar G & Tschierske C (2007) Complex liquid-crystalline superstructure of a pi-conjugated oligothiophene. ANGEW CHEM INT EDIT, 46(41), 7856-7859.
Prehm M, Liu F, Baumeister U, Zeng XB, Ungar G & Tschierske C (2007) The Giant-Hexagon cylinder network - A liquid-crystalline organization formed by a T-shaped quaternary amphiphile. ANGEW CHEM INT EDIT, 46(42), 7972-7975.
Lotz B, Okui N & Ungar G (2006) Special issue honouring Professor David Bassett on the occasion of his retirement. POLYMER, 47(15), 5431-5432.
Shcherbina MA & Ungar G (2006) Solution of the growth equation for asymmetric crystal faces. POLYMER, 47(15), 5505-5512.
Antipov EM, Dubinsky VA, Rebrov AV, Nekrasov YP, Gordeev SA & Ungar G (2006) Strain-induced mesophase and hard-elastic behaviour of biodegradable polyhydroxyalkanoates fibers. POLYMER, 47(15), 5678-5690.
Percec V, Ungar G & Peterca M (2006) Self-assembly in action. SCIENCE, 313(5783), 55-56.
Zeng X & Ungar G (2006) Inflation rules of square-triangle tilings: from approximants to dodecagonal liquid quasicrystals. PHILOS MAG, 86(6-8), 1093-1103.
Chen B, Baumeister U, Pelzl G, Das MK, Zeng XB, Ungar G & Tschierske C (2005) Carbohydrate rod conjugates: Ternary rod-coil molecules forming complex liquid crystal structures. J AM CHEM SOC, 127(47), 16578-16591.
Zeng XB, Ungar G, Spells SJ & King SM (2005) Real-time neutron scattering study of transient phases in polymer crystallization. MACROMOLECULES, 38(17), 7201-7204.
Ungar G & Zeng XB (2005) Frank-Kasper, quasicrystalline and related phases in liquid crystals. SOFT MATTER, 1(2), 95-106.
Zeng X, Ungar G & Impéror-Clerc M (2005) A triple-network tricontinuous cubic liquid crystal.. Nat Mater, 4(7), 562-567.
Tracz A & Ungar G (2005) AFM study of lamellar structure of melt-crystallized n-alkane C390H782. MACROMOLECULES, 38(12), 4962-4965.
Chen B, Zeng XB, Baumeister U, Ungar G & Tschierske C (2005) Liquid crystalline networks composed of pentagonal, square, and triangular cylinders. SCIENCE, 307(5706), 96-99.
Lui J, Zheng Y, Liao Y-P, Zeng X, Ungar G & Wright PV (2005) Organisation in two series of low-dimensional polymer electrolytes with high ambient lithium salt conductivity.. Faraday Discuss, 128, 363-378.
Ungar G, Putra EGR, de Silva DSM, Shcherbina MA & Waddon AJ (2005) The effect of self-poisoning on crystal morphology and growth rates. ADV POLYM SCI, 180, 45-87.
Dubinsky VA, Rebrov AV, Ungar G & Antipov EM (2004) Structural transformations in fibers of low-crystalline poly(hydroxyalkanoates) upon their deformation. POLYM SCI SER B+, 46(11-12), 343-347.
Zheng Y, Liu J, Liao Y-P, Ungar G & Wright PV (2004) Structure and inter-phase stability in solvent-free low-dimensional polymer electrolytes with high lithium conductivity.. Dalton Trans(19), 3053-3060.
Chen B, Zeng XB, Baumeister U, Diele S, Ungar G & Tschierske C (2004) Liquid Crystals with Complex Superstructures. Angewandte Chemie, 116(35), 4721-4725.
Dubinsky VA, Rebrov AV, Ungar G & Antipov EM (2004) Deformation-induced reversible changes in the structure of highly crystalline poly(hydroxyalkanoate) fibers. POLYM SCI SER B+, 46(9-10), 312-315.
Chen B, Baumeister U, Diele S, Das MK, Zeng XB, Ungar G & Tschierske C (2004) A new type of square columnar liquid crystalline phases formed by facial amphiphilic triblock molecules. J AM CHEM SOC, 126(28), 8608-8609.
Percec V, Mitchell CM, Cho WD, Uchida S, Glodde M, Ungar G, Zeng XB, Liu YS, Balagurusamy VSK & Heiney PA (2004) Designing libraries of first generation AB(3) and AB(2) self-assembling dendrons via the primary structure generated from combinations of (AB)(y)-AB(3) and (AB)(y)-AB(2) building blocks. J AM CHEM SOC, 126(19), 6078-6094.
Zeng X, Ungar G, Liu Y, Percec V, Dulcey AE & Hobbs JK (2004) Supramolecular dendritic liquid quasicrystals.. Nature, 428(6979), 157-160. View this article in WRRO
Gorce JP, Spells SJ, Zeng XB & Ungar G (2004) Infrared active methyl group vibrations in tetratetracontane: A probe for chain end organization and crystal structure. J PHYS CHEM B, 108(10), 3130-3139.
Zheng Y, Lui J, Ungar G & Wright PV (2004) Solvent-free low-dimensional polymer electrolytes for lithium-polymer batteries.. Chem Rec, 4(3), 176-191.
Chen B, Zeng XB, Baumeister U, Diele S, Ungar G & Tschierske C (2004) Liquid crystals with complex superstructures. ANGEW CHEM INT EDIT, 43(35), 4621-4625.
Dukeson DR, Ungar G, Balagurusamy VSK, Percec V, Johansson GA & Glodde M (2003) Application of isomorphous replacement in the structure determination of a cubic liquid crystal phase and location of counterions.. J Am Chem Soc, 125(51), 15974-15980.
Magonov SN, Yerina NA, Ungar G, Reneker DH & Ivanov DA (2003) Chain unfolding in single crystals of ultralong alkane C390H782 and polyethylene: An atomic force microscopy study. MACROMOLECULES, 36(15), 5637-5649.
Putra EGR & Ungar G (2003) In situ solution crystallization study of n-C246H494: Self-poisoning and morphology of polymethylene crystals. MACROMOLECULES, 36(14), 5214-5225.
Zeng YB & Ungar G (2003) Triple-layer superlattice in deuterium-labeled binary ultralong alkanes: A study by small-angle neutron and X-ray scattering. MACROMOLECULES, 36(13), 4686-4688.
Chia F, Zheng Y, Liu J, Reeves N, Ungar G & Wright PV (2003) Thick lamellar textures and high ambient conductivity in de-blended mixtures of low-dimensional systems of two polymers and Li salts. ELECTROCHIMICA ACTA, 48(14-16), 1939-1951.
Putra EGR & Ungar G (2003) Step initiation and propagation rate minima in solution crystallization of five long alkanes. MACROMOLECULES, 36(11), 3812-3814.
Zeng XB, Ungar G, Spells SJ, Brooke GM, Farren C & Harden A (2003) Crystal-amorphous polymer interface studied by neutron and x-ray scattering on labeled binary ultralong alkanes.. Phys Rev Lett, 90(15), 155508.
Ungar G, Liu Y, Zeng X, Percec V & Cho W-D (2003) Giant supramolecular liquid crystal lattice.. Science, 299(5610), 1208-1211.
Liu Z, Zhu L, Shen ZH, Zhou WS, Cheng SZD, Percec V & Ungar G (2002) Interrelationships of nanometer and subnanometer structures in a polynorbornene containing second generation liquid-crystalline monodendrons as side groups. MACROMOLECULES, 35(25), 9426-9433.
de Silva DSM, Zeng XB, Ungar G & Spells SJ (2002) Chain tilt and surface disorder in lamellar crystals. A FTIR and SAXS study of labeled long alkanes. MACROMOLECULES, 35(20), 7730-7741.
Percec V, Imam MR, Holerca MN, Ungar G, Pao WJ & Heiney PA (2002) Towards dynamic ionic-channel like supramolecular membranes.. ABSTR PAP AM CHEM S, 224, U457-U457.
Percec V, Cho WD, Ungar G & Yeardley DJP (2002) Synthesis and NaOTf mediated self-assembly of monodendritic crown ethers. CHEM-EUR J, 8(9), 2011-2025.
Liu Z, Zhu L, Zhou WS, Cheng SZD, Percec V & Ungar G (2002) Phase behaviors and molecular and supramolecular structural identifications of a liquid crystalline second generation monodendron. CHEM MATER, 14(5), 2384-2392.
Zeng XB & Ungar G (2002) Triple layer superlattice in binary mixtures of very long n-alkanes: a study by SAXS. POLYMER, 43(5), 1657-1666.
Percec V, Holerca MN, Uchida S, Cho WD, Ungar G, Lee YS & Yeardley DJP (2002) Exploring and expanding the three-dimensional structural diversity of supramolecular dendrimers with the aid of libraries of alkali metals of their AB(3) minidendritic carboxylates. CHEM-EUR J, 8(5), 1106-1117.
Percec V, Holerca MN, Ungar G, Poo WJ & Heiney PA (2002) Towards dynamic ionic-channel luce supramolecular membranes. American Chemical Society, Polymer Preprints, Division of Polymer Chemistry, 43(2), 481-482.
Chia FS, Zheng Y, Liu J, Ungar G & Wright PV (2002) Polymer compatibility, phase separation and high ambient conductivity in low - Dimensional polymer electrolyte blends with lithium salts. Ionics, 8(3-4), 201-209.
Ungar G (2002) Columnar phase in main chain and comblike polymers. Molecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals, 396, 155-168.
Ungar G & Zeng XB (2001) Learning polymer crystallization with the aid of linear, branched and cyclic model compounds.. Chem Rev, 101(12), 4157-4188.
Duan H, Hudson SD, Ungar G, Holerca MN & Percec V (2001) Definitive support by transmission electron microscopy, electron diffraction, and electron density maps for the formation of a BCC lattice from poly[N-[3,4,5-tris(n-dodecan-l-yloxy)benzoyl]ethyleneimine). CHEM-EUR J, 7(19), 4134-4141.
Zeng XB & Ungar G (2001) Semicrystalline lamellar phase in binary mixtures of very long chain n-alkanes. MACROMOLECULES, 34(20), 6945-6954.
Percec V, Holerca MN, Cho WD, Uchida S, Ungar G & Heiney P (2001) Expanding the 3-D architectural diversity of supramolecular dendrimers by functionalization of their periphery with libraries of minidendrons.. ABSTR PAP AM CHEM S, 222, U323-U323.
Ungar G & Putra EGR (2001) Asymmetric curvature of {110} crystal growth faces in polyethylene oligomers. MACROMOLECULES, 34(15), 5180-5185.
Zeng XB & Ungar G (2001) Novel layered superstructures in mixed ultralong n-alkanes.. Phys Rev Lett, 86(21), 4875-4878.
Higgs PG & Ungar G (2001) The dilution wave in polymer crystallization is described by Fisher's reaction-diffusion equation. J CHEM PHYS, 114(15), 6958-6959.
Percec V, Cho WD, Ungar G & Yeardley DJP (2001) Synthesis and structural analysis of two constitutional isomeric libraries of AB(2)-based monodendrons and supramolecular dendrimers. J AM CHEM SOC, 123(7), 1302-1315.
Percec V, Holerca MN, Magonov SN, Yeardley DJP, Ungar G, Duan H & Hudson SD (2001) Poly(oxazolines)s with tapered minidendritic side groups. the simplest cylindrical models to investigate the formation of two-dimensional and three-dimensional order by direct visualization. BIOMACROMOLECULES, 2(3), 706-728.
Percec V, Holerca MN, Uchida S, Yeardley DJP & Ungar G (2001) Poly(oxazoline)s with tapered minidendritic side groups as models for the design of synthetic macromolecules with tertiary structure. A demonstration of the limitations of living polymerization in the design of 3-D structures based on single polymer chains. BIOMACROMOLECULES, 2(3), 729-740.
Ungar G, Mandal PK, Higgs PG, de Silva DS, Boda E & Chen CM (2000) Dilution wave and negative-order crystallization kinetics of chain molecules.. Phys Rev Lett, 85(20), 4397-4400.
Percec V, Cho WD & Ungar G (2000) Increasing the diameter of cylindrical and spherical supramolecular dendrimers by decreasing the solid angle of their monodendrons via periphery functionalization. J AM CHEM SOC, 122(42), 10273-10281.
Ungar G, Noble K, Percec V & Johansson G (2000) X-ray diffraction study of polyphilic smectic liquid crystals. J MATER SCI, 35(20), 5241-5246.
Zheng RQ, Chen EQ, Cheng SZD, Xie FC, Yan DH, He TB, Percec V, Chu PW & Ungar G (2000) Phase identification in a series of liquid crystalline TPP polyethers and copolyethers having highly ordered mesophase structures. 8. Phase and structural evolution in a series of copolyethers containing odd-numbered methylene units in both comonomers. MACROMOLECULES, 33(14), 5159-5168.
Percec V, Cho WD, Moller M, Prokhorova SA, Ungar G & Yeardley DJP (2000) Design and structural analysis of the first spherical monodendron self-organizable in a cubic lattice. J AM CHEM SOC, 122(17), 4249-4250.
Percec V, Cho W-D, Ungar G & Yeardley DJP (2000) Von molekularen Kreissegmenten, Scheiben und Kegeln zu supramolekularen Zylindern und Kugeln mit an der Peripherie modifizierten Fréchet-Monodendren. Angewandte Chemie, 112(9), 1661-1666.
Friot B, Boyd D, Willis K, Donnio B, Ungar G & Bruce DW (2000) Hydrogen-bonded polycatenar mesogens. LIQ CRYST, 27(5), 605-611.
Ungar G, Percec V, Holerca MN, Johansson G & Heck JA (2000) Heat-shrinking spherical and columnar supramolecular dendrimers: their interconversion and dependence of their shape on molecular taper angle. Chemistry, 6(7), 1258-1266.
Yeardley DJP, Ungar G, Percec V, Holerca MN & Johansson G (2000) Spherical supramolecular minidendrimers self-organized in an "inverse micellar"-like thermotropic body-centered cubic liquid crystalline phase. J AM CHEM SOC, 122(8), 1684-1689.
Zheng YG, Gibaud A, Cowlam N, Richardson TH, Ungar G & Wright PV (2000) Structure and conductivity in LB films of low-dimensional polymer electrolytes. J MATER CHEM, 10(1), 69-77.
Percec V, Cho WD, Ungar G & Yeardley DJP (2000) From molecular flat tapers, discs, and cones to supramolecular cylinders and spheres using Frechet-type monodendrons modified on their periphery. ANGEW CHEM INT EDIT, 39(9), 1598-+.
Zheng YG, Chia FS, Ungar G & Wright PV (2000) Self-tracking in solvent-free, low-dimensional polymer electrolyte blends with lithium salts giving high ambient DC conductivity. CHEM COMMUN(16), 1459-1460.
Zheng RQ, Chen EQ, Cheng SZD, Xie FC, Yan DH, He TB, Percec V, Chu PW & Ungar G (1999) Phase identification in a series of liquid crystalline TPP polyethers and copolyethers having highly ordered mesophase structures. 7. Phase structures in a series of copolyethers containing odd and even numbers of methylene units of different compositions. MACROMOLECULES, 32(21), 6981-6988.
Grell M, Bradley DDC, Ungar G, Hill J & Whitehead KS (1999) Interplay of physical structure and photophysics for a liquid crystalline polyfluorene. MACROMOLECULES, 32(18), 5810-5817.
Bruce DW, Willis K & Ungar G (1999) Liquid crystals from hydrogen-bonded systems.. ABSTR PAP AM CHEM S, 218, U493-U493.
Zeng XB, Ungar G & Spells SJ (1999) Integer, noninteger, and mixed integer forms in long-chain n-alkanes.. ABSTR PAP AM CHEM S, 218, U630-U630.
Zheng RQ, Chen EQ, Cheng SZD, Xie FC, Yan DH, He TB, Percec V, Chu PW & Ungar G (1999) Phase identification in a series of liquid crystalline TPP polyethers and copolyethers having highly ordered mesophase structures. 6. Structure changes from smectic to columnar phases in a series of copolyethers containing odd and even numbers of methylene units in equal molar composition. MACROMOLECULES, 32(11), 3574-3582.
Ungar G & Zeng XB (1999) Crystalline bilayers in the very long chain n-alkanoic acid C191H383COOH. MACROMOLECULES, 32(10), 3543-3545.
Percec V, Holerca MN, Bera TK & Ungar G (1999) Minidendrons as models or maquettes for the elaboration of novel supramolecular architectural motifs from larger generations of dendrons.. ABSTR PAP AM CHEM S, 217, U462-U462.
Percec V, Ahn CH, Bera TK, Ungar G & Yeardley DJP (1999) Coassembly of a hexagonal columnar liquid crystalline superlattice from polymer(s) coated with a three-cylindrical bundle supramolecular dendrimer. CHEM-EUR J, 5(3), 1070-1083.
Percec V, Cho WD, Mosier PE, Ungar G & Yeardley DJP (1998) Structural analysis of cylindrical and spherical supramolecular dendrimers quantifies the concept of monodendron shape control by generation number. J AM CHEM SOC, 120(43), 11061-11070.
Percec V, Ahn CH, Cho WD, Jamieson AM, Kim J, Leman T, Schmidt M, Gerle M, Moller M, Prokhorova SA , Sheiko SS et al (1998) Visualizable cylindrical macromolecules with controlled stiffness from backbones containing libraries of self-assembling dendritic side groups. J AM CHEM SOC, 120(34), 8619-8631.
Percec V, Schlueter D, Ungar G, Cheng SZD & Zhang A (1998) Hierarchical control of internal superstructure, diameter, and stability of supramolecular and macromolecular columns generated from tapered monodendritic building blocks. MACROMOLECULES, 31(6), 1745-1762.
Ungar G, Zeng XB, Brooke GM & Mohammed S (1998) Structure and formation of noninteger and integer folded-chain crystals of linear and branched monodisperse ethylene oligomers. MACROMOLECULES, 31(6), 1875-1879.
Ezquerra TA, Sanchez-Cuesta M, Ungar G, Feijoo JL & Lopez-Cabarcos E (1998) Phase behavior of a substituted poly(paraphenylene): Poly(para-2,5-didecyl-p-phenylene). J POLYM SCI POL PHYS, 36(1), 49-54.
Percec V, Ahn CH, Ungar G, Yeardley DJP, Moller M & Sheiko SS (1998) Controlling polymer shape through the self-assembly of dendritic side-groups. NATURE, 391(6663), 161-164.
Bissell RA, Boden N, Bushby RJ, Fishwick CWG, Holland E, Movaghar B & Ungar G (1998) Novel synthesis of calamitic and discotic liquid crystalline derivatives of tetrathiafulvalene (TTF). CHEM COMMUN(1), 113-114.
Hudson SD, Jung HT, Percec V, Cho WD, Johansson G, Ungar G & Balagurusamy VSK (1997) Direct visualization of individual cylindrical and spherical supramolecular dendrimers. SCIENCE, 278(5337), 449-452.
Ahn CH, Percec V, Cho WD, Ungar G, Sheiko SS & Moeller M (1997) Synthesis and direct visualization of 3-d spherical and rigid columnar polymers constructed from backbones jacketed with dendritic coats.. ABSTR PAP AM CHEM S, 214, 142-PMSE.
Cho WD, Percec V & Ungar G (1997) Influence of monodendron architecture on the shape and size of supramolecular dendrimers.. ABSTR PAP AM CHEM S, 214, 141-PMSE.
Schlueter D, Percec V, Ungar G & Chu PG (1997) Construction of nanoscale columns with controlled diameter from first generation monodendron based building blocks.. ABSTR PAP AM CHEM S, 214, 139-PMSE.
Schlueter D, Chu P, Percec V & Ungar G (1997) Living ring opening metathesis polymerization of monodendritic norbornenes. Scope and limitations.. ABSTR PAP AM CHEM S, 214, 76-PMSE.
Percec V, Cho WD, Ahn CH, Schlueter D, Johansson G, Mosier PE, Ungar G, Moller M, Sheiko SS, Hudson SD & Jung HT (1997) Controlled interconversion between spherical and columnar shapes in libraries of supramolecular and macromolecular dendrimers constructed from quasi-equivalent monodendrons.. ABSTR PAP AM CHEM S, 214, 70-PMSE.
Percec V, Holerca MN, Johansson G, Ungar G & Yeardley DJP (1997) Controlling the shape of polymer chains by living cationic bulk polymerization of monodendritic cyclic iminoethers. ABSTR PAP AM CHEM S, 214, 205-POLY.
Boda E, Ungar G, Brooke GM, Burnett S, Mohammed S, Proctor D & Whiting MC (1997) Crystallization rate minima in a series of n-alkanes from C194H390 to C294H590. MACROMOLECULES, 30(16), 4674-4678.
Price DJ, Willis K, Richardson T, Ungar G & Bruce DW (1997) Hydrogen bonded liquid crystals from nitrophenols and alkoxystilbazoles. J MATER CHEM, 7(6), 883-891.
Ungar G, Balagurusamy VSK, Percec V, Johannson G & Heck J (1997) Columnar and micellar cubic liquid crystal structures from tapered dendron molecules. ABSTR PAP AM CHEM S, 213, 351-PHYS.
Balagurusamy VSK, Ungar G, Percec V & Johansson G (1997) Rational design of the first spherical supramolecular dendrimers self-organized in a novel thermotropic cubic liquid-crystalline phase and the determination of their shape by X-ray analysis. J AM CHEM SOC, 119(7), 1539-1555.
Percec V, Schlueter D & Ungar G (1997) Rational design of a hexagonal columnar mesophase in telechelic alternating multicomponent semifluorinated polyethylene oligomers. MACROMOLECULES, 30(3), 645-648.
Percec V, Holerca MN, Johansson G, Ungar G & Yeardley DJP (1997) Controlling the shape of polymer chains by living cationic bulk polymerization of monodendritic cyclic iminoethers. American Chemical Society, Polymer Preprints, Division of Polymer Chemistry, 38(2), 478-479.
Johansson G, Percec V, Ungar G & Smith K (1997) Fluorophobic effect generates a systematic approach to the synthesis of the simplest class of rodlike liquid crystals containing a single benzene unit. CHEM MATER, 9(1), 164-175.
Percec V, Johansson G, Ungar G & Zhou JP (1996) Fluorophobic effect induces the self-assembly of semifluorinated tapered monodendrons containing crown ethers into supramolecular columnar dendrimers which exhibit a homeotropic hexagonal columnar liquid crystalline phase. J AM CHEM SOC, 118(41), 9855-9866.
Willis K, Luckhurst JE, Price DJ, Frechet JMJ, Kihara H, Kato T, Ungar G & Bruce DW (1996) On the mesomorphism of hydrogen bonded complexes formed between decyloxystilbazole and phthalic acid. LIQ CRYST, 21(4), 585-587.
Percec V, Schlueter D, Johansson G, Ronda JC & Ungar G (1996) New strategies for the design of chiral polymers by learning from the self-assembly of viruses. ABSTR PAP AM CHEM S, 212, 206-ORGN.
Dias FB, Batty SV, Ungar G, Voss JP & Wright PV (1996) Ionic conduction of lithium and magnesium salts within laminar arrays in a smectic liquid-crystal polymer electrolyte. J CHEM SOC FARADAY T, 92(14), 2599-2606.
Percec V, Asandei AD & Ungar G (1996) From regioirregular linear main-chain liquid-crystal polyethers exhibiting two uniaxial nematic phases to macrocyclic main chain oligoethers displaying nematic and smectic phases. CHEM MATER, 8(7), 1550-1557.
Ungar G, Abramic D, Percec V & Heck JA (1996) Self-assembly of twin tapered bisamides into supramolecular columns exhibiting hexagonal columnar mesophases. Structural evidence for a microsegregated model of the supramolecular column. LIQ CRYST, 21(1), 73-86.
Organ SJ, Keller A, Hikosaka M & Ungar G (1996) Growth and nucleation rate minima in long n-alkanes. POLYMER, 37(12), 2517-2524.
Dias FB, Batty SV, Voss JP, Ungar G & Wright PV (1996) Ionic conductivity of a novel smectic polymer electrolyte. SOLID STATE IONICS, 85(1-4), 43-49.
Percec V, Chu P, Johansson G, Schlueter D, Ronda JC & Ungar G (1996) Macromolecular and supramolecular liquid crystals with complex architectures.. ABSTR PAP AM CHEM S, 211, 180-POLY.
Percec V, Schlueter D, Ronda JC, Johansson G, Ungar G & Zhou JP (1996) Tubular architectures from polymers with tapered side groups. Assembly of side groups via a rigid helical chain conformation and flexible helical chain conformation induced via assembly of side groups. MACROMOLECULES, 29(5), 1464-1472.
Johansson G, Percec V, Ungar G & Zhou JP (1996) Fluorophobic effect in the self-assembly of polymers and model compounds containing tapered groups into supramolecular columns. MACROMOLECULES, 29(2), 646-660.
Willis K, Price DJ, Adams H, Ungar G & Bruce DW (1995) Hydrogen-bonded liquid crystals from alkoxystilbazoles and 3-cyanophenols: Structural control of mesomorphism. Molecular structure of the complex between 4-cyanophenol and 4-octyloxystilbazole. J MATER CHEM, 5(12), 2195-2199.
PERCEC V, CHU PW, UNGAR G & ZHOU JP (1995) RATIONAL DESIGN OF THE FIRST NONSPHERICAL DENDRIMER WHICH DISPLAYS CALAMITIC NEMATIC AND SMECTIC THERMOTROPIC LIQUID-CRYSTALLINE PHASES. J AM CHEM SOC, 117(46), 11441-11454.
DIAS FB, VOSS JP, BATTY SV, WRIGHT PV & UNGAR G (1994) SMECTIC PHASES IN A NOVEL-ALKYL-SUBSTITUTED POLYETHER AND ITS COMPLEX WITH LITHIUM TETRAFLUOROBORATE. MACROMOL RAPID COMM, 15(12), 961-969.
Percec V, Heck J, Johansson G, Tomazos D, Kawasumi M, Chu P & Ungar G (1994) Molecular Recognition Directed Self-Assembly of Supramolecular Liquid Crystals. Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals, 254(1), 137-196.
Percec V, Heck J, Johansson G, Tomazos D, Kawasumi M & Ungar G (1994) Molecular-Recognition-Directed Self-Assembly of Supramolecular Polymers. Journal of Macromolecular Science, Part A, 31(8), 1031-1070.
PERCEC V, CHU PW, UNGAR G, CHENG SZD & YOON Y (1994) LIQUID-CRYSTALLINE POLYETHERS BASED ON CONFORMATIONAL ISOMERISM .33. THERMOTROPIC POLYETHERS BASED ON A MESOGENIC GROUP CONTAINING RIGID AND FLEXIBLE UNITS - 1-(4'-HYDROXYBIPHENYL-4-YL)-2-(4-HYDROXYPHENYL)PROPANE. J MATER CHEM, 4(5), 719-727.
UNGAR G, PERCEC V & ZUBER M (1994) INFLUENCE OF MOLECULAR-STRUCTURE ON THE NEMATIC-NEMATIC TRANSITION IN POLYETHERS BASED ON 1-(4-HYDROXY-PHENYL)-2-(2-R-4-HYDROXYPHENYL)ETHANE WHERE R=CH3 AND CL, AND FLEXIBLE SPACERS WITH AN ODD NUMBER OF METHYLENE UNITS. POLYM BULL, 32(3), 325-330.
JOHANSSON G, PERCEC V, UNGAR G & ABRAMIC D (1994) MOLECULAR RECOGNITION DIRECTED SELF-ASSEMBLY OF TUBULAR LIQUID-CRYSTALLINE AND CRYSTALLINE SUPRAMOLECULAR ARCHITECTURES FROM TAPER SHAPED (15-CROWN-5)METHYL 3,4,5-TRIS(P-ALKYLOXYBENZYLOXY)BENZOATES AND (15-CROWN-5)METHYL 3,4,5-TRIS(P-DODECYLOXY) BENZOATE. J CHEM SOC PERK T 1(4), 447-459.
Percec V, Heck J, Johansson G, Tomazos D, Kawasumi M & Ungar G (1994) Molecular-Recognition-Directed Self-Assembly of Supramolecular Polymers. Journal of Macromolecular Science, Part A, 31(8), 1031-1070.
Ungar G, Batty SV, Percec V, Heck J & Johansson G (1994) Structure and conductivity of liquid crystal channel-like linic complexes of taper-shaped compounds. Advanced Materials for Optics and Electronics, 4(4), 303-313.
PERCEC V, TOMAZOS D, HECK J, BLACKWELL H & UNGAR G (1994) SELF-ASSEMBLY OF TAPER-SHAPED MONOESTERS OF OLIGO(ETHYLENE OXIDE) WITH 3,4,5-TRIS(N-DODECAN-1-YLOXY)BENZOIC ACID AND OF THEIR POLYMETHACRYLATES INTO TUBULAR SUPRAMOLECULAR ARCHITECTURES DISPLAYING A COLUMNAR HEXAGONAL MESOPHASE. J CHEM SOC PERK T 2(1), 31-44.
HIGGS PG & UNGAR G (1994) THE GROWTH OF POLYMER CRYSTALS AT THE TRANSITION FROM EXTENDED CHAINS TO FOLDED CHAINS. J CHEM PHYS, 100(1), 640-648.
PERCEC V, HECK JA, TOMAZOS D & UNGAR G (1993) THE INFLUENCE OF THE COMPLEXATION OF SODIUM AND LITHIUM TRIFLATE ON THE SELF-ASSEMBLY OF TUBULAR-SUPRAMOLECULAR ARCHITECTURES DISPLAYING A COLUMNAR MESOPHASE BASED ON TAPER-SHAPED MONOESTERS OF OLIGOETHYLENE OXIDE WITH 3,4,5-TRIS[P-(N-DODECAN-1-YLOXY)BENZYLOXY]BENZOIC ACID AND OF THEIR POLYMETHACRYLATES. J CHEM SOC PERK T 2(12), 2381-2388.
PERCEC V, HECK J, TOMAZOS D, FALKENBERG F, BLACKWELL H & UNGAR G (1993) SELF-ASSEMBLY OF TAPER-SHAPED MONOESTERS OF OLIGO(ETHYLENE OXIDE) WITH 3,4,5-TRIS(P-DODECYCLOXYBENZYLOXY)BENZOIC ACID AND OF THEIR POLYMETHACRYLATES INTO TUBULAR SUPRAMOLECULAR ARCHITECTURES DISPLAYING A COLUMNAR MESOPHASE. J CHEM SOC PERK T 1(22), 2799-2811.
PERCEC V, JOHANSSON G, HECK J, UNGAR G & BATTY SV (1993) MOLECULAR RECOGNITION DIRECTED SELF-ASSEMBLY OF SUPRAMOLECULAR CYLINDRICAL CHANNEL-LIKE ARCHITECTURES FROM 6,7,9,10,12,13,15,16-OCTAHYDRO-1,4,7,10,13-PENTAOXABENZOCYCLOPENTADECEN-2-YLMETHYL 3,4,5-TRIS(P-DODECYLOXYBENZYL-OXY)BENZOATE. J CHEM SOC PERK T 1(13), 1411-1420.
PERCEC V, HECK J, JOHANSSON G & UNGAR G (1993) TOWARDS TOBACCO MOSAIC VIRUS-LIKE SELF-ASSEMBLED SUPRAMOLECULAR ARCHITECTURES. ABSTR PAP AM CHEM S, 205, 235-POLY.
ODELL JA, UNGAR G & FEIJOO JL (1993) A RHEOLOGICAL, OPTICAL, AND X-RAY STUDY OF THE RELAXATION OF ORIENTATION OF NEMATIC PBZT. J POLYM SCI POL PHYS, 31(2), 141-155.
Parsons R, Robinson KM, Twomey TA, Leiserowitz L, Roberts KJ, Chernov AA, Van Der Eerden JP, Bennema P, Frenken JWM, Sherwood JN , Goldbeck-Wood G et al (1993) General discussion. Faraday Discussions, 95, 145-172.
UNGAR G (1993) THERMOTROPIC HEXAGONAL PHASES IN POLYMERS - COMMON FEATURES AND CLASSIFICATION. POLYMER, 34(10), 2050-2059.
FEIJOO JL, UNGAR G & PERCEC V (1993) SUPERHEATING OF THE NEMATIC PHASE IN MAIN-CHAIN POLYMERS. MOL CRYST LIQ CRYST, 231, 129-135.
PERCEC V, HECK J, LEE M, UNGAR G & ALVAREZCASTILLO A (1992) POLY(2-VINYLOXYETHYL 3,4,5-TRIS[4-(N-DODECANYLOXY)BENZYLOXY]BENZOATE) - A SELF-ASSEMBLED SUPRAMOLECULAR POLYMER SIMILAR TO TOBACCO MOSAIC-VIRUS. J MATER CHEM, 2(10), 1033-1039.
PERCEC V, LEE M, HECK J, BLACKWELL HE, UNGAR G & ALVAREZCASTILLO A (1992) REENTRANT ISOTROPIC-PHASE IN A SUPRAMOLECULAR DISK-LIKE OLIGOMER OF 4-[3,4,5-TRIS(NORMAL-DODECANYLOXY)BENZOYLOXY]-4'-[(2-VINYLOXY)ETHOXY]BIPHENYL. J MATER CHEM, 2(9), 931-938.
RASTOGI S & UNGAR G (1992) HEXAGONAL COLUMNAR PHASE IN 1,4-TRANS-POLYBUTADIENE - MORPHOLOGY, CHAIN EXTENSION, AND ISOTHERMAL PHASE REVERSAL. MACROMOLECULES, 25(5), 1445-1452.
PERCEC V, ZUBER M, UNGAR G & ALVAREZCASTILLO A (1992) MOLECULAR ENGINEERING OF A HEXAGONAL COLUMNAR (PHI-H) MESOPHASE EXHIBITED BY FLEXIBLE COPOLYETHERS BASED ON 1-(4-HYDROXYPHENYL)-2-(2-R-4-HYDROXYPHENYL)-ETHANE WITH R = H, F, AND FLEXIBLE SPACERS. MACROMOLECULES, 25(3), 1193-1197.
UNGAR G, PERCEC V & ZUBER M (1992) LIQUID-CRYSTALLINE POLYETHERS BASED ON CONFORMATIONAL ISOMERISM .20. NEMATIC NEMATIC TRANSITION IN POLYETHERS AND COPOLYETHERS BASED ON 1-(4-HYDROXYPHENYL)-2-(2-R-4-HYDROXYPHENYL)ETHANE WITH R = FLUORO, CHLORO, AND METHYL AND FLEXIBLE SPACERS CONTAINING AN ODD NUMBER OF METHYLENE UNITS. MACROMOLECULES, 25(1), 75-80.
UNGAR G (1992) SOME EXPERIMENTAL ASPECTS OF SMALL AND WIDE ANGLE X-RAY-SCATTERING STUDIES OF TRANSITIONS IN POLYMERS AND LIQUID-CRYSTALS. PHASE TRANSIT, 39(1-4), 215-239.
ADAMS H, ALBENIZ AC, BAILEY NA, BRUCE DW, CHERODIAN AS, DHILLON R, DUNMUR DA, ESPINET P, FEIJOO JL, LALINDE E , MAITLIS PM et al (1991) SYNTHESIS AND PHASE-BEHAVIOR OF MESOMORPHIC TRANSITION-METAL COMPLEXES OF ALKOXYDITHIOBENZOATES - CRYSTAL AND MOLECULAR-STRUCTURE OF 3 METAL ALKOXYDITHIOBENZOATES. J MATER CHEM, 1(5), 843-855.
PERCEC V, HECK J & UNGAR G (1991) LIQUID-CRYSTALLINE POLYMERS CONTAINING MESOGENIC UNITS BASED ON HALF-DISK AND RODLIKE MOIETIES .5. SIDE-CHAIN LIQUID-CRYSTALLINE POLY(METHYLSILOXANES) CONTAINING HEMIPHASMIDIC MESOGENS BASED ON 4-[[3,4,5-TRIS(ALKAN-1-YLOXY)BENZOYL]OXY]-4'-[[PARA-(PROPAN-1-YLOXY)-BENZOYL]OXY]BIPHENYL GROUPS. MACROMOLECULES, 24(17), 4957-4962.
KELLER A, ORGAN SJ & UNGAR G (1991) NEW TRENDS IN POLYMER CRYSTALLIZATION STUDIES .1. FROM ALKANES TO POLYETHYLENE - THE ONSET OF CHAIN FOLDING IN POLYMER CRYSTALLIZATION. MAKROMOL CHEM-M SYMP, 48-9, 93-102.
UNGAR G, PERCEC V & RODENHOUSE R (1991) LIQUID-CRYSTAL POLYMERS CONTAINING MACROHETEROCYCLIC LIGANDS .5. STRUCTURE OF THE LIQUID-CRYSTAL PHASES OF POLY[4-[(11-METHACRYLOYLUNDECAN-1-YL)OXY]-4'-(4'-CARBOXYBENZO-15-CROWN-5)BIPHENYL]. MACROMOLECULES, 24(8), 1996-2002.
UNGAR G, FEIJOO JL, PERCEC V & YOURD R (1991) LIQUID-CRYSTALLINE POLYETHERS BASED ON CONFORMATIONAL ISOMERISM .16. HEXAGONAL COLUMNAR PHASE (PHI-H) IN A NONDISCOTIC COPOLYETHER AND THE NOVEL 2-DIMENSIONAL TO 3-DIMENSIONAL PHI-H - SB TRANSITION. ABSTR PAP AM CHEM S, 201, 212-POLY.
KELLER A & UNGAR G (1991) A SCHEME FOR PHASE-STABILITY IN LIQUID-CRYSTAL POLYMERS. J APPL POLYM SCI, 42(6), 1683-1693.
UNGAR G, FEIJOO JL, PERCEC V & YOURD R (1991) LIQUID-CRYSTALLINE POLYETHERS BASED ON CONFORMATIONAL ISOMERISM .15. SMECTIC AND CRYSTALLINE PHASES IN COPOLYETHERS BASED ON 1,2-BIS(4-HYDROXYPHENYL)ETHANE AND COMBINATIONS OF 1,10-DIBROMODECANE WITH 1,12-DIBROMODODECANE AND OF 1,8-DIBROMOOCTANE WITH 1,12-DIBROMODODECANE. MACROMOLECULES, 24(5), 1168-1174.
UNGAR G, FEIJOO JL, PERCEC V & YOURD R (1991) LIQUID-CRYSTALLINE POLYETHERS BASED ON CONFORMATIONAL ISOMERISM .16. HEXAGONAL COLUMNAR PHASE (PHI-H) IN A NONDISCOTIC COPOLYETHER BASED ON 1,2-BIS(4-HYDROXYPHENYL)ETHANE, 1,8-DIBROMOOCTANE, AND 1,12-DIBROMOOCTANE, AND THE NOVEL 2-DIMENSIONAL-3-DIMENSIONAL PHI-H-SB TRANSITION. MACROMOLECULES, 24(4), 953-957.
CHERODIAN AS, DAVIES AN, RICHARDSON RM, COOK MJ, MCKEOWN NB, THOMSON AJ, FEIJOO J, UNGAR G & HARRISON KJ (1991) MESOGENIC BEHAVIOR OF SOME 1,4,8,11,15,18,22,25-OCTA-ALKYLPHTHALOCYANINES. MOL CRYST LIQ CRYST, 196, 103-114.
FEIJOO JL, UNGAR G, KELLER A, ODELL JA, OWEN AJ & PERCEC V (1991) EVIDENCE FOR THE APPEARANCE OF DISCLINATIONS UNDER SHEAR IN THE ISOTROPIC STATE OF LIQUID-CRYSTAL FORMING POLYMERS. MOL CRYST LIQ CRYST, 196, 1-11.
PERCEC V, ASAMI K, TOMAZOS D, FEIJOO JL, UNGAR G & KELLER A (1991) SYNTHESIS AND CHARACTERIZATION OF THERMOTROPIC POLYETHERS BASED ON 4,4'-DIHYDROXY-ALPHA-METHYLSTILBENE AND FLEXIBLE SPACERS CONTAINING EVEN NUMBERS OF METHYLENE UNITS AND COPOLYETHERS BASED ON PAIRS OF FLEXIBLE SPACERS CONTAINING EVEN AND ODD-EVEN NUMBERS OF METHYLENE UNITS. MOL CRYST LIQ CRYST, 205, 67-86.
PERCEC V, ASAMI K, TOMAZOS D, FEIJOO JL, UNGAR G & KELLER A (1991) SYNTHESIS AND CHARACTERIZATION OF THERMOTROPIC POLYETHERS AND COPOLYETHERS BASED ON 4,4'-DIHYDROXY-ALPHA-METHYLSTILBENE AND FLEXIBLE SPACERS CONTAINING ODD NUMBERS OF METHYLENE UNITS. MOL CRYST LIQ CRYST, 205, 47-66.
Ungar G, Feijoo JL, Percec V & Yourd RA (1991) Liquid crystalline polyethers based on conformational isomerism. 16. hexagonal columnar phase (φh) in a non-discotic copolyether and the novel 2-dimensional to 3-dimensional φh-SB transition. American Chemical Society, Polymer Preprints, Division of Polymer Chemistry, 32(1), 282-283.
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ORGAN SJ, UNGAR G & KELLER A (1990) ISOTHERMAL REFOLDING IN CRYSTALS OF LONG ALKANES IN SOLUTION .2. MORPHOLOGICAL-CHANGES ACCOMPANYING THICKENING. J POLYM SCI POL PHYS, 28(12), 2365-2384.
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FEIJOO JL, UNGAR G, KELLER A & PERCEC V (1990) NONEQUILIBRIUM EXCESS ORDER IN THE ISOTROPIC STATE OF MAIN-CHAIN LIQUID-CRYSTAL-FORMING POLYMERS. POLYMER, 31(11), 2019-2022.
UNGAR G & WILLS HH (1990) SAXS STUDY OF TRANSIENT PRE-MELTING IN CHAIN-FOLDED ALKANES. ABSTR PAP AM CHEM S, 200, 134-POLY.
FEIJOO JL & UNGAR G (1990) SIMULTANEOUS X-RAY DIFFRACTION/DSC OF THE REVERSIBLE ORTHORHOMBIC-HEXAGONAL TRANSITION IN GEL-DRAWN POLYETHYLENE. ABSTR PAP AM CHEM S, 200, 77-POLY.
UNGAR G & FEIJOO JL (1990) SIMULTANEOUS X-RAY-DIFFRACTION AND DIFFERENTIAL SCANNING CALORIMETRY (XDDSC) IN STUDIES OF MOLECULAR AND LIQUID-CRYSTALS. MOL CRYST LIQ CRYST, 180, 281-291.
KELLER A, UNGAR G & PERCEC V (1990) LIQUID-CRYSTALLINE POLYMERS - A UNIFYING THERMODYNAMICS-BASED SCHEME. ACS SYM SER, 435, 308-334.
Feijoo JL, Keller A, Yourd R & Percec V (1990) Simultaneous X-Ray/DSC Study of Mesomorphism in Polymers with a Semiflexible Mesogen. Macromolecules, 23(14), 3411-3416.
KELLER A, UNGAR G & ORGAN SJ (1989) FROM ALKANES TO POLYETHYLENE - THE ONSET OF CHAIN FOLDING IN POLYMER CRYSTALLIZATION. ABSTR PAP AM CHEM S, 198, 18-POLY.
ORGAN SJ, UNGAR G & KELLER A (1989) RATE MINIMUM IN SOLUTION CRYSTALLIZATION OF LONG PARAFFINS. MACROMOLECULES, 22(4), 1995-2000.
Keller A, Ungar G & Organ SJ (1989) From alkanes to polyethylene: the onset of chain folding in polymer crystallization. American Chemical Society, Polymer Preprints, Division of Polymer Chemistry, 30(2), 263-264.
UNGAR G, ORGAN SJ & KELLER A (1988) X-RAY EVIDENCE FOR SHARP CHAIN FOLDS IN CRYSTALLINE LINEAR ALKANES. J POLYM SCI POL LETT, 26(6), 259-262.
Odell JA, Keller A, Atkins EDT, Nagy MJ, Feijoo JL & Ungar G (1988) Orientability of Rigid Rodlike Molecules in Solution and Controlled Preparation of Model Systems. MRS Proceedings, 134.
FEIJOO JL, UNGAR G, OWEN AJ, KELLER A & PERCEC V (1988) EFFECTS OF THERMAL-TREATMENT ON THE TEMPERATURE AND HEAT OF ISOTROPIZATION IN A NEMATIC POLYETHER. MOL CRYST LIQ CRYST, 155, 487-494.
UNGAR G & KELLER A (1988) CRYSTAL AND PSEUDO-CRYSTAL PHASES IN MAIN CHAIN MESOGENIC HOMOPOLYMERS AND COPOLYMERS WITH FLEXIBLE SPACERS. MOL CRYST LIQ CRYST, 155, 313-325.
UNGAR G & KELLER A (1987) INVERSION OF THE TEMPERATURE-DEPENDENCE OF CRYSTALLIZATION RATES DUE TO ONSET OF CHAIN FOLDING. POLYMER, 28(11), 1899-1907.
UNGAR G & ORGAN SJ (1987) INFRARED-SPECTRUM OF TIGHT CHAIN FOLDS IN CRYSTALS OF LONG LINEAR PARAFFINS. POLYM COMMUN, 28(8), 232-235.
UNGAR G & KELLER A (1986) TIME-RESOLVED SYNCHROTRON X-RAY STUDY OF CHAIN-FOLDED CRYSTALLIZATION OF LONG PARAFFINS. POLYMER, 27(12), 1835-1844.
UNGAR G & NAVE C (1986) SMALL-ANGLE X-RAY-SCATTERING ON POLYMERS. CHEM BRIT, 22(9), 828-&.
UNGAR G (1986) FROM PLASTIC-CRYSTAL PARAFFINS TO LIQUID-CRYSTAL POLYETHYLENE - CONTINUITY OF THE MESOPHASE IN HYDROCARBONS. MACROMOLECULES, 19(5), 1317-1324.
UNGAR G, STEJNY J, KELLER A, BIDD I & WHITING MC (1985) THE CRYSTALLIZATION OF ULTRALONG NORMAL PARAFFINS - THE ONSET OF CHAIN FOLDING. SCIENCE, 229(4711), 386-389.
VAUGHAN AS, UNGAR G, BASSETT DC & KELLER A (1985) ON HEXAGONAL PHASES OF PARAFFINS AND POLYETHYLENES. POLYMER, 26(5), 726-732.
UNGAR G & MASIC N (1985) ORDER IN THE ROTATOR PHASE OF NORMAL-ALKANES. J PHYS CHEM-US, 89(6), 1036-1042.
KELLER A & UNGAR G (1983) RADIATION EFFECTS AND CRYSTALLINITY IN POLYETHYLENE. RADIAT PHYS CHEM, 22(1-2), 155-181.
UNGAR G (1983) STRUCTURE OF ROTATOR PHASES IN NORMAL-ALKANES. J PHYS CHEM-US, 87(4), 689-695.
UNGAR G, GRUBB DT & KELLER A (1983) SPATIAL NONUNIFORMITY OF CROSS-LINKING IN CRYSTALLINE ALKANES OF DIFFERENT CHAIN-LENGTH. RADIAT PHYS CHEM, 22(3-5), 849-860.
Ungar G (1981) Radiation effects in polyethylene and n-alkanes. Journal of Materials Science, 16(10), 2635-2656.
UNGAR G (1981) RADIATION EFFECTS IN POLYETHYLENE AND NORMAL-ALKANES. J MATER SCI, 16(10), 2635-2656.
UNGAR G, DLUGOSZ J & RANOGAJEC F (1981) DEFORMATION MECHANISM IN SWOLLEN RADIATION-GRAFTED POLYETHYLENE. RADIAT PHYS CHEM, 18(5-6), 1235-1246.
UNGAR G & KELLER A (1980) EFFECT OF RADIATION ON THE CRYSTALS OF POLYETHYLENE AND PARAFFINS .1. FORMATION OF THE HEXAGONAL LATTICE AND THE DESTRUCTION OF CRYSTALLINITY IN POLYETHYLENE. POLYMER, 21(11), 1273-1277.
UNGAR G (1980) EFFECT OF RADIATION ON THE CRYSTALS OF POLYETHYLENE AND PARAFFINS .2. PHASE-SEPARATION IN GAMMA-IRRADIATED PARAFFINS. POLYMER, 21(11), 1278-1283.
UNGAR G, GRUBB DT & KELLER A (1980) EFFECT OF RADIATION ON THE CRYSTALS OF POLYETHYLENE AND PARAFFINS .3. IRRADIATION IN THE ELECTRON-MICROSCOPE. POLYMER, 21(11), 1284-1291.
UNGAR G (1979) CHANGES IN ROW STRUCTURE OF EXTRUDED POLYETHYLENE FILM ON GRAFTING WITH STYRENE .1. DISTRIBUTION OF POLYSTYRENE AND CRYSTALLINE REORIENTATION. J POLYM SCI POL CHEM, 17(7), 2137-2149.
UNGAR G & DLUGOSZ J (1979) CHANGES IN ROW STRUCTURE OF EXTRUDED POLYETHYLENE FILM IN GRAFTING WITH STYRENE .2. COPOLYMER MORPHOLOGY. J POLYM SCI POL CHEM, 17(7), 2151-2162.
UNGAR G & KELLER A (1979) LONG-RANGE INTERMIXING OF PARAFFIN MOLECULES IN THE CRYSTALLINE STATE. COLLOID POLYM SCI, 257(1), 90-94.
Gabana K, Gehring GA, Meyer H, Ungar G, Zeng X & Fall WS () Molecular Simulations of Quantized Lamellar Thickening in Polyethylenes with Regularly Spaced Brominated Groups. Macromolecules.
Xi P, Zhao W, Cao Y, Xie S, Wang P, Ungar G, Ye X & Liu F () Facile Construction of Soft Plasmonic Sensors with Exceptional Optical Activity for Quantitative Chiral Detection. Small.
Ungar G & Xi P () Plasmonic Sensors with Exceptional Optical Activity for Quantitative Chiral Detection. Small.
Li Y-X, Jia R-Y, Ungar G, Ma T, Zhao K, Zeng X-B & Cheng X-H () Thermotropic “Plumber’s Nightmare” ‐ A Tight Liquid Organic Double Framework. Angewandte Chemie International Edition.
Li Y-X, Jia R-Y, Ungar G, Ma T, Zhao K, Zeng X-B & Cheng X-H () Thermotropic “Plumber’s Nightmare” ‐ A Tight Liquid Organic Double Framework. Angewandte Chemie.
Zhang R-B, Grunwald MA, Zeng X-B, Laschat S, Cammidge AN & Ungar G () Orientational transitions of discotic columnar liquid crystals in cylindrical pores. Soft Matter.
Wang Y, Yang S-G, Li Y-X, Cao Y, Liu F, Zeng X-B, Cseh L & Ungar G () Supertwisted Chiral Gyroid Mesophase in Chiral Rod‐like Compounds. Angewandte Chemie International Edition.
Wang Y, Yang S-G, Li Y-X, Cao Y, Liu F, Zeng X-B, Cseh L & Ungar G () Supertwisted Chiral Gyroid Mesophase in Chiral Rod‐like Compounds. Angewandte Chemie.
Cui J, Yang S-G, Zhang R, Cao Y, Wang Y, Zeng X, Liu F & Ungar G () Continuous Spectrum of Morphologies and Phase Behavior across the Contact Zone from Poly(l-lactide) to Poly(d-lactide): Stereocomplex, Homocrystal, and Between. Macromolecules.
Wang Y, Li Y-X, Cseh L, Chen Y-X, Yang S-G, Zeng X, Liu F, Hu W & Ungar G () Enantiomers Self-Sort into Separate Counter-Twisted Ribbons of the Fddd Liquid Crystal─Antiferrochirality and Parachirality. Journal of the American Chemical Society.
Yang S-G, Zhang L-Q, Chen C, Cui J, Zeng X-B, Liu L, Liu F & Ungar G () 3D Morphology of Different Crystal Forms in β-Nucleated and Fiber-Sheared Polypropylene: α-Teardrops, α-Teeth, and β-Fans. Macromolecules.
Huang N, Huang W, Luo Z, Chu W & Ungar G () Crystalline Order Propagates Across Thick Layers of Water in Solutions of Supramolecular Nanotubes. Chemistry – A European Journal.
Zeng X, Glettner B, Baumeister U, Chen B, Ungar G, Liu F & Tschierske C () A columnar liquid quasicrystal with a honeycomb structure that consists of triangular, square and trapezoidal cells. Nature Chemistry.
Zhao Y, Li Y, Cao Y, Mehl GH, Liu F & Ungar G () The Effect of Mesogenic Coronas on the Type and Anisotropy of Gold Nanoparticle Superlattices: When Can the Tail Wag the Dog?. Chemistry – A European Journal.
Cui J, Yang S-G, Zhang Q, Liu F & Ungar G () Poisoning by Purity: What Stops Stereocomplex Crystallization in Polylactide Racemate?. Macromolecules.
Hamaguchi K, Lu H, Okamura S, Kajiyama S, Uchida J, Sato S, Watanabe G, Ishii Y, Washizu H, Ungar G & Kato T () Reentrant 2D Nanostructured Liquid Crystals by Competition between Molecular Packing and Conformation: Potential Design for Multistep Switching of Ionic Conductivity. ChemPhysChem.
Huo H, Zou J, Yang S, Zhang J, Liu J, Liu Y, Hao Y, Chen H, Li H, Huang C , Ungar G et al () Multicompartment Nanoparticles by Crystallization‐Driven Self‐Assembly of Star Polymers: Combining High Stability and Loading Capacity. Macromolecular Rapid Communications, 2200706-2200706.
Yang S-G, Zhang L-Q, Cui J, Zeng X-B, Guo B, Liu F & Ungar G () Morphology of Shear-Induced Polymer Cylindrites Revealed by 3D Optical Imaging. Macromolecules.
Zhao Y-Y, Cao Y, Siligardi G, Mehl GH, Liu F & Ungar G () Self‐assembly of gold nanoparticles into an adjustable plasmonic 3D lattice using Janus‐type forked mesogenic ligands. Chemistry – An Asian Journal.
Hu L, Zhang X, Zhao P, Fan H, Zhang Z, Deng J, Ungar G & Song J () Gradient H‐Bonding Binder Enables Stable High‐Areal‐Capacity Si‐Based Anodes in Pouch Cells. Advanced Materials, 2104416-2104416.
Huo H, Li Z, Tan T, Chen L, Ungar G, Hoogenboom R, Zhang Q & Liu F () Asymmetric Incorporation of Silver Nanoparticles in Polymeric Assemblies by Coassembly of Tadpole‐Like Nanoparticles and Amphiphilic Block Copolymers. Macromolecular Rapid Communications, 2100354-2100354.
Zhang R, Fall WS, Hall KW, Gehring GA, Zeng X & Ungar G () Roughening Transition and Quasi-continuous Melting of Monolayers of Ultra-long Alkanes: Why Bulk Polymer Melting Is Strongly First-Order. Macromolecules.
Zeng X & Ungar G () Spontaneously chiral cubic liquid crystal: three interpenetrating networks with a twist. Journal of Materials Chemistry C, 8(16), 5389-5398.
Kuo D, Soberats B, Kumar KRS, Yoshio M, Ichikawa T, Ohno H, Zeng X, Ungar G & Kato T () Switching of ionic conductivities in columnar liquid-crystalline anilinium salts: effects of alkyl chains, ammonium cations and counter anions on thermal properties and switching temperatures. Molecular Systems Design & Engineering, 4(2), 342-347.
Wang S, Chen K, Zhao H, He C, Wu C, Guo D, Zhao N, Ungar G, Shen J, Chu X , Li P et al () β-Ga2O3 nanorod arrays with high light-to-electron conversion for solar-blind deep ultraviolet photodetection. RSC Advances, 9(11), 6064-6069.
Tomašić V, Mihelj T, Zhang R, Liu F & Ungar G () Mesomorphism of a new series of catanionic 4-(1-pentylheptyl)benzenesulfonates. Soft Matter, 10(39), 7887-7896.
Ungar G & Zeng X-B () ChemInform Abstract: Learning Polymer Crystallization with the Aid of Linear, Branched and Cyclic Model Compounds. ChemInform, 33(15), no-no.
BISSELL RA, BODEN N, BUSHBY RJ, FISHWICK CWG, HOLLAND E, MOVAGHAR B & UNGAR G () ChemInform Abstract: Novel Synthesis of Calamitic and Discotic Liquid Crystalline Derivatives of Tetrathiafulvalene (TTF).. ChemInform, 29(18), no-no.
PERCEC V, HECK J, JOHANSSON G, TOMAZOS D, KAWASUMI M, CHU P & UNGAR G () ChemInform Abstract: Molecular Recognition Directed Self-Assembly of Supramolecular Architectures. ChemInform, 26(13), no-no.
PERCEC V, TOMAZOS D, HECK J, BLACKWELL H & UNGAR G () ChemInform Abstract: Self-Assembly of Taper-Shaped Monoesters of Oligo(ethylene Oxide) with 3,4,5-Tris(n-dodecan-1-yloxy)benzoic Acid and of Their Polymethacrylates into Tubular Supramolecular Architectures Displaying a Columnar Hexagonal Mesophase.. ChemInform, 25(15), no-no.
PERCEC V, HECK J, LEE M, UNGAR G & ALVAREZ-CASTILLO A () ChemInform Abstract: Poly(2-vinyloxyethyl-3,4,5-tris(4-(n-dodecanyloxy)benzyloxy)benzoate): A Self-Assembled Supramolecular Polymer Similar to Tobacco Mosaic Virus.. ChemInform, 24(15), no-no.
Stevenson WD, Zeng X, Welch C, Thakur AK, Ungar G & Mehl GH () Macroscopic chirality of twist-bend nematic phase in bent dimers confirmed by circular dichroism. Journal of Materials Chemistry C, 8(3), 1041-1047.

Chapters

Ungar G, Chen ZH & Zeng X (2016) X-ray scattering, Series in Soft Condensed Matter (pp. 209-253). WORLD SCIENTIFIC
Ungar G, liu F & Zeng XB (2014) Thermotropic Cubic Liquid Crystal Phases, Other 3D Phases and Quasicrystals In Goodby JW, Collings P, Kato T, Tschierske C, Gleeson H & Raynes P (Ed.), Handbook of Liquid Crystals (pp. 363-436). Weinheim: VCH-Wiley.
Tschierske C & Ungar G (2014) Side-branched Polyphiles and Polygonal Cylinder Phases In Goodby JW, Colling P, Kato T, Tschierske C, Gleeson H & Raynes P (Ed.), Handbook of Liquid Crystals (pp. 437-482). Weinheim: VCH-Wiley.
Ungar G (2002) Crystallization of Uniform Oligomers, Encyclopedia of Materials: Science and Technology (pp. 1-6). Elsevier
Hikosaka M, Mabuchi K, Yonetake K, Masuko T, Ungar G & Percec V (1994) “Liquid Crystallization” Mechanism of Liquid Crystalline Polymers, Ordering in Macromolecular Systems (pp. 89-97). Springer Berlin Heidelberg
Ungar G (1988) What Do Long Alkanes Reveal About Polymers?, Integration of Fundamental Polymer Science and Technology—2 (pp. 346-362). Springer Netherlands
Tschierske C & Ungar G () Side-Branched Polyphiles and Polygonal Cylinder Phases (pp. 1-46). Wiley-VCH Verlag GmbH & Co. KGaA
Ungar G, Liu F & Zeng X () Cubic and Other 3D Thermotropic Liquid Crystal Phases and Quasicrystals (pp. 1-74). Wiley-VCH Verlag GmbH & Co. KGaA
Rastogi S, Hikosaka M, Keller A & Ungar G () The role of transient hexagonal phase in crystallization of polymers, Solidification Processes in Polymers (pp. 42-45). Steinkopff
Ungar G () Hexagonal columnar phases in polymers, Solidification Processes in Polymers (pp. 52-56). Steinkopff

Conference proceedings papers

Partridge B, Roche C, Sun H-J, Leowanawat P, Araoka F, Sahoo D, Peterca M, Wilson D, Prendergast M, Zeng X , Ungar G et al (2016) Mechanisms for supramolecular helical polymerization into crystalline arrays of chiral columns. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, Vol. 252
Partridge B, Leowanawat P, Ho M-S, Peterca M, Sun H-J, Sahoo D, Wu Y-C, Aqad E, Imam M, Graf R , Spiess H et al (2016) Thermodynamically controlled crystallization of self-organizing supramolecular assemblies. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, Vol. 252
Percec V, Rosen B, Peterca M, Leowanawat P, Imam M, Partridge B, Zeng X, Ungar G & Heiney P (2016) Materials genome approach to discover and predict hierarchical structures. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, Vol. 252
Percec V, Rosen B, Roche C, Partridge B, Sun H-J, Leowanawat P, Peterca M, Araoka F, Zeng X, Ungar G & Heiney P (2016) Why are biological systems homochiral?. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, Vol. 252
Roche C, Partridge B, Sun H-J, Leowanawat P, Araoka F, Peterca M, Wilson D, Prendergast M, Zeng X, Ungar G , Heiney P et al (2016) Deracemization of supramolecular assemblies in bulk crystal state. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, Vol. 252
Kanie K, Matsubara M, Stevenson W, Yamazaki Y, Yabuki J, Kojima K, Nakaya M, Chichibu SF, Muramatsu A, Zeng X & Ungar G (2016) Liquid-crystalline organic-inorganic hybrid dendrimer with a CdS nano-core: The self-organized structure-dependent photoluminescence behavior. 22nd International Congress of Chemical and Process Engineering, CHISA 2016 and 19th Conference on Process Integration, Modelling and Optimisation for Energy Saving and Pollution Reduction, PRES 2016, Vol. 2 (pp 795-796)
Tadjiev T, Zeng X, Peterca M, Ungar G, Percec V & Leowanawat P (2012) Dendronized perylene bisimides: Soft-crystal structure key to high charge mobility. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, Vol. 244
Leowanawat P, Aqad E, Imam MR, Sun H-J, Peterca M, Hudson SD, Ungar G, Zeng X, Graf R, Spiess HW , Heiney PA et al (2012) Self-assembly and self-repairing of complex helical columns based on dendronized perylene bisimides. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, Vol. 244
Zheng Y, Liu J, Liao YP, Ungar G & Wright PV (2005) Low dimensional polymer electrolytes with enhanced Li+ conductivities. JOURNAL OF POWER SOURCES, Vol. 146(1-2) (pp 418-422)
Liu J, Zheng Y, Liao YP, Apperley DC, Ungar G & Wright PV (2005) High lithium conductivities in weakly-ionophilic low-dimensional block copolymer electrolytes. ELECTROCHIMICA ACTA, Vol. 50(19) (pp 3815-3826)
Percec V, Smidrkal J, Holerca MN, Nummelin S, Morrison JJ, Glodde M, Golding GM, Balagurusamy VSK, Peterca M, Uchida S , Heiney PA et al (2004) Synthesis, structural and retrostructural analysis of novel AB(2)- and AB(3)-type self-assembled supramolecular dendrimers.. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, Vol. 228 (pp U62-U63)
Ungar G, Putra EGR, de Silva DSM & Waddon AJ (2004) Events at the growth face as revealed by concentration dependence of crystallization rate of long alkanes.. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, Vol. 228 (pp U499-U499)
Zeng XB, Liu YS, Ungar G, Percec V & Dulcey AE (2004) Dendrimeric liquid quasicrystal.. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, Vol. 228 (pp U500-U500)
de Silva DSM, Zeng XB, Ungar G & Spells SJ (2003) On perpendicular and tilted chains in lamellar crystals. JOURNAL OF MACROMOLECULAR SCIENCE-PHYSICS, Vol. B42(3-4) (pp 915-927)
Ungar G (2003) Columnar phase in main chain and comb-like polymers. MOLECULAR CRYSTALS AND LIQUID CRYSTALS, Vol. 396 (pp 155-168)
Chia FS, Zheng Y, Liu J, Ungar G & Wright PV (2002) Influence of polymer I polymer II compatibility on conductivity in low-dimensional polymer electrolyte blends. SOLID STATE IONICS, Vol. 147(3-4) (pp 275-280)
Zeng XB & Ungar G (2002) Semicrystalline and superlattice structures in binary mixture of long chain n-alkanes C194H390 and C294H590. JOURNAL OF MACROMOLECULAR SCIENCE-PHYSICS, Vol. B41(4-6) (pp 1305-1320)
Zheng Y, Chia F, Ungar G & Wright PV (2001) Self-tracking, solvent-free low-dimensional polymer electrolyte blends with lithium salts. JOURNAL OF POWER SOURCES, Vol. 97-8 (pp 641-643)
Zheng YG, Chia FS, Ungar G, Richardson TH & Wright PV (2001) High ambient dc and ac conductivities in solvent-free, low-dimensional polymer electrolyte blends with lithium salts. ELECTROCHIMICA ACTA, Vol. 46(10-11) (pp 1397-1405)
Ungar G, Zeng XB & Spells SJ (2000) Non-integer and mixed integer forms in long n-alkanes observed by real-time LAM spectroscopy and SAXS. POLYMER, Vol. 41(25) (pp 8775-8780)
Grell M, Bradley DDC, Inbasekaran M, Ungar G, Whitehead KS & Woo EP (2000) Intrachain ordered polyfluorene. SYNTHETIC METALS, Vol. 111 (pp 579-581)
Zheng YG, Wright PV & Ungar G (2000) Insertion of ionophobic components into amphiphilic low-dimensional polymer electrolytes. ELECTROCHIMICA ACTA, Vol. 45(8-9) (pp 1161-1165)
Zeng XB & Ungar G (1998) Lamellar structure of non-integer folded and extended long-chain n-alkanes by small-angle X-ray diffraction. POLYMER, Vol. 39(19) (pp 4523-4533)
Wright PV, Zheng Y, Bhatt D, Richardson T & Ungar G (1998) Supramolecular order in new polymer electrolytes. POLYMER INTERNATIONAL, Vol. 47(1) (pp 34-42)
Dias FB, Batty SV, Gupta A, Ungar G, Voss JP & Wright PV (1998) Ionic conduction of lithium, sodium and magnesium salts within organised smectic liquid crystal polymer electrolytes. ELECTROCHIMICA ACTA, Vol. 43(10-11) (pp 1217-1224)
Zheng Y, Dias FB, Wright PV, Ungar G, Bhatt D, Batty SV & Richardson T (1998) Novel alternate layer LB film polymer electrolyte systems. ELECTROCHIMICA ACTA, Vol. 43(10-11) (pp 1633-1637)
Zheng Y, Bhatt D, Dias FB, Batty SV, Tajbakhsh AR, Richardson T, Wright PV & Ungar G (1997) Conductivity of novel, thin-film, heterogeneous polymer electolyte systems. SUPRAMOLECULAR SCIENCE, Vol. 4(3-4) (pp 525-528)
Batty SV, Richardson T, Dias FB, Voss JP, Wright PV & Ungar G (1996) LB films of novel polyethers and their salt complexes. THIN SOLID FILMS, Vol. 285 (pp 530-532)
Boda E, Ungar G & Keller A (1996) Crystallization rate minima in ultra-longn-alkanes. Acta Crystallographica Section A Foundations of Crystallography, Vol. 52(a1) (pp C508-C508)
Percec V, Johansson G, Schlueter D, Ronda JC & Ungar G (1996) Molecular recognition directed self-assembly of tubular supramolecular architectures from building blocks containing monodendrons as exo-receptors and crown- or pseudo-crown-ethers as endo-receptors. MACROMOLECULAR SYMPOSIA, Vol. 101 (pp 43-60)
UNGAR G, ZHOU JP, PERCEC V & CHU PW (1995) NEMATIC, SMECTIC AND COLUMNAR PHASES OF MAIN-CHAIN LIQUID-CRYSTAL POLYETHERS. MACROMOLECULAR SYMPOSIA, Vol. 98 (pp 951-966)
PERCEC V, HECK J, JOHANSSON G, TOMAZOS D & UNGAR G (1994) TOWARDS TOBACCO MOSAIC VIRUS-LIKE SELF-ASSEMBLED SUPRAMOLECULAR ARCHITECTURES. MACROMOLECULAR SYMPOSIA, Vol. 77 (pp 237-265)
PERCEC V, HECK J, JOHANSSON G, TOMAZOS D, KAWASUMI M & UNGAR G (1994) MOLECULAR-RECOGNITION-DIRECTED SELF-ASSEMBLY OF SUPRAMOLECULAR POLYMERS. JOURNAL OF MACROMOLECULAR SCIENCE-PURE AND APPLIED CHEMISTRY, Vol. A31(8) (pp 1031-1070)
PERCEC V, HECK J, JOHANSSON G, TOMAZOS D, KAWASUMI M, CHU P & UNGAR G (1994) MOLECULAR RECOGNITION DIRECTED SELF-ASSEMBLY OF SUPRAMOLECULAR ARCHITECTURES. JOURNAL OF MACROMOLECULAR SCIENCE-PURE AND APPLIED CHEMISTRY, Vol. A31(11) (pp 1719-1758)
ORGAN SJ, KELLER A & UNGAR G (1993) GROWTH, NUCLEATION AND THICKENING RATE MINIMA IN LONG LINEAR ALKANES. CRYSTALLIZATION OF POLYMERS, Vol. 405 (pp 81-86)
UNGAR G (1993) SELF-POISONING OF CRYSTAL-GROWTH FACES IN LONG ALKANES AND POLY(ETHYLENE OXIDE) FRACTIONS. CRYSTALLIZATION OF POLYMERS, Vol. 405 (pp 63-72)
UNGAR G & HILL MJ (1991) LONG-RANGE ACTIVE-SITE TRANSFER IN IRRADIATED HYDROCARBON CRYSTALS. RADIATION PHYSICS AND CHEMISTRY, Vol. 37(1) (pp 37-42)
UNGAR G & KELLER A (1991) RADIATION AND THE CRYSTALS OF POLYETHYLENE AND PARAFFINS. RADIATION EFFECTS ON POLYMERS, Vol. 475 (pp 101-118)
KELLER A, UNGAR G & PERCEC V (1990) LIQUID-CRYSTALLINE POLYMERS - A UNIFYING THERMODYNAMICS-BASED SCHEME. LIQUID-CRYSTALLINE POLYMERS, Vol. 435 (pp 308-334)

Preprints

Gabana K, Gehring GA, Meyer H, Ungar G, Zeng X & Fall WS (2024) Molecular Simulations of Quantized Lamellar Thickening in Polyethylenes with Regularly Spaced Brominated Groups, arXiv.
Zeng X, Glettner B, Baumeister U, Chen B, Ungar G, Liu F & Tschierske C (2022) A Columnar Liquid Quasicrystal – Honeycomb with Triangular, Square and Trapezoidal Cells, Research Square.
McCarthy MM, Fall WS, Zeng X, Ungar G & Gehring GA (2021) The statistics of the ordering of chiral ribbons on a honeycomb lattice, arXiv.
George S, Bentham C, Zeng X, Ungar G & Gehring GA (2017) Monte Carlo study of the ordering in a strongly frustrated liquid crystal, arXiv.
Stevenson WD, Ahmed Z, Zeng XB, Welch C, Ungar G & Mehl GH (2016) Molecular organization in the twist-bend nematic phase by resonant X-ray scattering at the Se K-edge and by SAXS, WAXS and GIXRD, arXiv.
Yang S-G, Wei Z-Z, Cseh L, Kazemi P, Zeng X, Xie H-J, Saba H & Ungar G () Bowls, Vases and Goblets – The Microcrockery of Polymer and Nanocomposite Morphology Revealed by Two-Photon Optical Tomography, Research Square Platform LLC.
Li Y-X, Gao H-F, Zhang R-B, Gabana K, Chang Q, Gehring G, Cheng X-H, Zeng X & Ungar G () Liquid crystal phase of counter-rotating staircases – A case of antiferrochirality, Research Square Platform LLC.

Professional activities and memberships

IUPAC 2017 Distinguished Award for Novel Materials and their Synthesis
Invited speaker at over 80 international conferences
Visiting Professor at Universities of Hiroshima, Barcelona, Zhejiang Sci-Tech and Seoul National University
On Editorial Board of Polymer Journal
Member of the Committee of the British Liquid Crystal Society
Member of the Beam Allocation Panel of the UK Synchrotron Radiation Source
Member of the EPSRC College
Over 10,000 citations, h-index51