由二芳基乙烯配体和氯化锌组成的金属配合物的光致变色现象。

Photochromism of metal complexes composed of diarylethene ligands and ZnCl2.

作者信息

Matsuda Kenji, Shinkai Yoshihiro, Irie Masahiro

机构信息

Department of Chemistry and Biochemistry, Graduate School of Engineering, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan.

出版信息

Inorg Chem. 2004 Jun 28;43(13):3774-6. doi: 10.1021/ic049686c.

DOI:10.1021/ic049686c

PMID:15206850

Abstract

Metal complexes composed of ZnCl(2) and bidentate 1,2-bis(2-methyl-5-(4-pyridyl)-3-thienyl)perfluorocyclopentene (1a) and monodentate 1-(2-methyl-5-phenyl-3-thienyl)-2-(2-methyl-5-(4-pyridyl)-3-thienyl)perfluorocyclopentene (2a) photochromic ligands were prepared. X-ray crystallographic analyses showed the formation of a coordination polymer and a discrete 2:1 complex for 1a.ZnCl(2) and 2a(2).ZnCl(2), respectively. While the 2a(2).ZnCl(2) crystal underwent photochromic reaction in the crystalline state by alternate irradiation with UV and visible light, the 1a.ZnCl(2) crystal did not show any photoreactivity. The difference in the photochromic behavior was explained by the difference in the conformation of the diarylethenes in the crystals.

摘要

制备了由氯化锌（ZnCl₂）与双齿的1,2 - 双（2 - 甲基 - 5 - （4 - 吡啶基） - 3 - 噻吩基）全氟环戊烯（1a）和单齿的1 - （2 - 甲基 - 5 - 苯基 - 3 - 噻吩基） - 2 - （2 - 甲基 - 5 - （4 - 吡啶基） - 3 - 噻吩基）全氟环戊烯（2a）光致变色配体组成的金属配合物。X射线晶体学分析表明，对于1a·ZnCl₂和2a₂·ZnCl₂，分别形成了一种配位聚合物和一种离散的2:1配合物。虽然2a₂·ZnCl₂晶体在晶体状态下通过紫外光和可见光交替照射发生了光致变色反应，但1a·ZnCl₂晶体没有表现出任何光反应活性。光致变色行为的差异通过晶体中二芳基乙烯构象的差异来解释。