Molecular Design and Polymer Structure Control Based on Polymer Crystal Engineering. Topochemical Polymerization of 1,3-Diene Mono- and Dicarboxylic Acid Derivatives Bearing a Naphthylmethylammonium Group as the Countercation
作者:Akikazu Matsumoto、Sadamu Nagahama、Toru Odani
DOI:10.1021/ja001093n
日期:2000.9.1
polymerization of the alkylammonium salts of (Z,Z)-, (E,Z)-, and (E,E)-1,3-diene mono- or dicarboxylic acids, i.e., of the muconic and sorbic acid derivatives, is described from the viewpoint of polymer crystal engineering. Not only the (Z,Z)- but also the (E,E)-derivatives polymerize to give a high molecular weight polymer in the crystalline state under UV irradiation when a naphthylmethylammonium
(Z,Z)-、(E,Z)-和(E,E)-1,3-二烯单羧酸或二羧酸的烷基铵盐,即粘康酸和山梨酸衍生物的拓扑化学聚合,是从高分子晶体工程的角度描述的。当将萘基甲基铵部分作为抗衡阳离子引入这些单体时,不仅 (Z,Z)-而且 (E,E)- 衍生物在紫外线照射下聚合以产生结晶状态的高分子量聚合物。NMR 光谱证实了在聚合过程中形成了有规立构的内消旋或赤型二等规反式 2,5-聚合物,而与单体的构型和取代基的结构无关。山梨酸的萘甲基铵盐的单晶结构分析揭示了在晶体中形成的柱状结构中二烯部分的堆积,有利于拓扑化学聚合。测定所得聚合物的光聚合反应性和立体化学...