Yao Qing-Xia, Xuan Wei-Min, Zhang Hui, Tu Chao-Yang, Zhang Jie
Graduate School of the Chinese Academy of Sciences, Fuzhou, Fujian, 350002, China.
Chem Commun (Camb). 2009 Jan 7(1):59-61. doi: 10.1039/b815456b. Epub 2008 Nov 18.
A unique supramolecular helix assisted by water tetramers is obtained by static evaporation of aqueous solution of a zwitterionic salt, 1,1'-bis(4-carboxylatebenzyl)-4,4'-bipyridinium; spontaneous chiral symmetry breaking occurs in crystallization; interestingly, redox chromism behavior of crystals upon exposure to alcohol atmosphere has been observed.
通过两性离子盐1,1'-双(4-羧基苄基)-4,4'-联吡啶的水溶液静态蒸发得到了一种由四聚水辅助的独特超分子螺旋结构；在结晶过程中发生了自发的手性对称性破缺；有趣的是，观察到晶体在暴露于酒精气氛时具有氧化还原变色行为。
