Construction and optical properties of dithienylethene-based photoswitchable [n]rotaxane (n = 2, 3)
作者:Ziyong Li、Chaojun He、Yanbo Li、Yangyang Wang、Cangcang Wei、Jun Yin、Sheng Hua Liu
DOI:10.1016/j.dyepig.2017.09.001
日期:2018.1
catenanes provide a novel backbone for constructing functional materials with unique structural characteristics. In this study, the novel photoswitchable [n]rotaxanes 11 and 12 based on dithienylethene unit were efficiently synthesized by the classical template-directed clipping approach. And their structures were well-confirmed by NMR, MS and elemental analysis. Investigation on photochromic properties indicated
Heterorotaxanes, one class of topological organic structures, have attracted increasing interesting during the past two decades. In general, two types of heterorotaxane structures exist, one in which two or more different macrocycles are threaded onto one dumbbell-shaped molecule and the other where one macrocycle is threaded onto two or more different dumbbell-shaped molecules. In comparison to these