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Virgil Percec

Researcher at University of Pennsylvania

Publications -  816
Citations -  46092

Virgil Percec is an academic researcher from University of Pennsylvania. The author has contributed to research in topics: Polymerization & Liquid crystal. The author has an hindex of 101, co-authored 798 publications receiving 42465 citations. Previous affiliations of Virgil Percec include University of California, Berkeley & University of Ulm.

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Biaxiality in a Cyclic Thermotropic Nematic Liquid-Crystal

TL;DR: Birefringence and textural data for a ring-shaped trimeric liquid crystal are presented in this article, where the material apparently undergoes a uniaxial-to-biaxial nematic phase transition as a function of temperature.
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Solubilization of Regioregular and Regioirregular Poly(p-phenylene)s via CF3 and OCF3 Substituents To Generate a Model for Rigid-Rod Polymers

TL;DR: In this paper, regioregular poly(p-phenylene)s (PPPs) with OCF3, CF3 or OCH3 substituents (16a, 16b, or 16c, respectively) were synthesized via Ni(0)-catalyzed polymerization of 2-substituted-1,4-bis[[(trifluoromethyl)sulfonyl]oxy]biphenyls 14a, 14b and 2,2‘-disubstitized-4,4�
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Encoding biological recognition in a bicomponent cell-membrane mimic.

TL;DR: The discovery of lamellar and hexagonal periodic arrays on the surface of vesicles generated from sequence-defined bicomponent monodisperse oligomers containing lipid and glycolipid mimics provides a mechanism to encode the reactivity of sugars via their interaction with sugar-binding proteins.
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Metal-catalyzed living radical graft copolymerization of butyl methacrylate and styrene initiated from the structural Defects of narrow molecular weight distribution poly(vinyl chloride)†

TL;DR: In this article, the metal catalyzed living radical graft copolymerization experiments initiated from the structural defects of PVC with narrow molecular weight distribution were performed and it was shown that, contrary to the results obtained using model compounds as initiators, the structural defect of PVC provided an excellent initiation efficiency for butyl methacrylate and a less efficient initiation for styrene.
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Columnar liquid crystals in cylindrical nanoconfinement.

TL;DR: The columnar phase of several discotic compounds with increasing column rigidity is studied and expressions for distortion free energy suggest that the orientation is determined by the competition between the distortion energy of the 2-d lattice and the mismatch of its crystallographic facets with the curved pore wall in the axial orientation.