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Updated: May 11, 2026

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Published on: February 7, 2017
Chiral amplification during asymmetric-induced copolymerization of phenylacetylenes with tight cis-cisoidal main
Lijia Liu1, Kazuomi Mottate, Geng Zhang
1Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education and Polymer Materials Research Center, Harbin Engineering University, Harbin 150001, China. liulijia@hrbeu.edu.cn
Abstract:
A novel phenylacetylene (1) having two hydroxyl groups and a chiral pinanyl group together with the other three related phenylacetylenes has been synthesized and (co)polymerized by using an achiral catalytic system. Among the four monomers, only 1 is suitable to the asymmetric-induced polymerization (AIP). Chiral amplification phenomenon is only observed in the copolymerization of 1 with an achiral phenylacetylene having two hydroxyl groups (3). The tight helical cis-cisoidal main chain formed by making intramolecular hydrogen bonds between the hydroxyl groups in the copoly(1/3) enhances the efficiency of chiral induction and as a result chiral amplification phenomenon is observed during the copolymerization.
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