Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education and Polymer Materials Research Center, Harbin Engineering University, Harbin 150001, China.
Macromol Rapid Commun. 2013 Jul 25;34(14):1140-4. doi: 10.1002/marc.201300318. Epub 2013 May 27.
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.
一种新型的苯乙炔（1），具有两个羟基和一个手性 pinanyl 基团，以及其他三个相关的苯乙炔，已经通过使用非手性催化体系被合成并（共聚）聚合。在这四个单体中，只有 1 适合于不对称诱导聚合（AIP）。手性放大现象仅在具有两个羟基的非手性苯乙炔（3）与 1 的共聚中观察到。通过在共聚物（1/3）中形成分子内氢键，形成紧密的螺旋顺式-顺式主链，增强了手性诱导的效率，因此在共聚过程中观察到手性放大现象。
