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Polymers 2015, 7(1), 147-155; doi:10.3390/polym7010147

Synthesis of a Terpene-Based New Chiral Inducer and Preparation of an Asymmetric Polymer

Division of Materials Science, Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8573, Japan
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Author to whom correspondence should be addressed.
Academic Editor: Alexander Böker
Received: 7 December 2014 / Accepted: 14 January 2015 / Published: 20 January 2015
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Abstract

A new chiral compound was synthesized based on L-borneol. A cholesteric liquid crystal (LC) electrolyte solution was prepared by adding it as a chiral inducer to a nematic LC. A chiral poly(3,4-ethylenedioxythiophene) (PEDOT*, * = asymmetry) film was prepared by electrochemical polymerization in the induced cholesteric LC. The PEDOT* film showed a maximum absorption band due to a π–π* transition in the UV-vis absorption and bisignate Cotton effect in the reduced state in circular dichroism (CD). The CD spectrum indicates that PEDOT* backbones form right-handed helical aggregation. However, the maximum optical absorption band due to π–π* transition of the PEDOT* decreases and a new absorption band appears at long wavelengths upon oxidation due to generation of polarons as charge carriers. Bisignate Cotton effect disappears and broadly negative CD signal appears at long wavelengths in the oxidized state. View Full-Text
Keywords: electrochemical polymerization; poly(3,4-ethylenedioxythiophene); bornyl group; chiral inducer; cholesteric liquid crystal; optical activity electrochemical polymerization; poly(3,4-ethylenedioxythiophene); bornyl group; chiral inducer; cholesteric liquid crystal; optical activity
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Matsumura, A.; Yang, F.; Goto, H. Synthesis of a Terpene-Based New Chiral Inducer and Preparation of an Asymmetric Polymer. Polymers 2015, 7, 147-155.

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