title: Nonsymmetrical dithienylethenes bearing dithieno[3,2-b:2',3'-d]thiophene units with photochromic performance in the crystalline phase.
abstract: Four novel nonsymmetrical photochromic diarylethene compounds containing dithieno[3,2-b:2',3'-d]thiophene units were designed and synthesized to investigate their photochromic properties. All these molecules adopt a photoactive antiparallel conformation in single crystals, as revealed by X-ray crystallographic analysis, and exhibit excellent photochromism in solution as well as in the crystalline phase.
authors: Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China.
authors: Hongke
authors: H
authors: Wang
authors: Hui
authors: H
authors: Lin
authors: Wei
authors: W
authors: Xu
authors: Daoben
authors: D
authors: Zhu