Solvent-to-Polymer Chirality Transfer in Intramolecular Stack Structure

Title
Solvent-to-Polymer Chirality Transfer in Intramolecular Stack Structure
Author(s)
이대훈[이대훈]진용재[진용재]김효진[김효진]스즈키[스즈키]후지키[후지키]사카구치[사카구치]김석규이왕은[이왕은]곽기섭[곽기섭]
Keywords
HIGH GAS-PERMEABILITY; NEMATIC LIQUID-CRYSTAL; SUBSTITUTED ACETYLENE POLYMER; HELICAL CONJUGATED POLYMERS; DISUBSTITUTED POLYACETYLENES; MACROMOLECULAR HELICITY; CIRCULAR-DICHROISM; REACTION FIELD; STEREOREGULAR POLY((4-CARBOXYPHENYL)ACETYLENE); POLY(DIPHENYLACETYLENE) MEMBRANES
Issue Date
201207
Publisher
AMER CHEMICAL SOC
Citation
MACROMOLECULES, v.45, no.13, pp.5379 - 5386
Abstract
Solvent-to-polymer chirality transfer was examined using conjugated polymer with intramolecular stack structure (IaSS). When achiral poly(diphenylacetylene)s (PDPAs) dissolved in limonene, the solvent chirality was successfully transferred to the side phenyl stack structure, leading to intramolecular axial chirality. The phenyl-phenyl IaSS was under thermodynamic control to readily undergo asymmetric changes in chiral limonene, leading to optical activity in the isotropic structure between the main chain and resonant side phenyl rings. The axial chirality was significantly affected by the chain length and substitution position of the side alkyl groups. The longer alkyl chains and bulkier alkyl group prevented direct intermolecular interactions between the side phenyl rings and the chiral limonene molecules. PDPA with sterically congested, highly stable, and regulated IaSS was not favorable for efficient solvent-to-polymer chirality transfer.
URI
http://hdl.handle.net/YU.REPOSITORY/27662http://dx.doi.org/10.1021/ma300976r
ISSN
0024-9297
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이과대학 > 화학생화학부 > Articles
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