应用化学 ›› 2023, Vol. 40 ›› Issue (2): 245-251.DOI: 10.19894/j.issn.1000-0518.220185

• 研究论文 • 上一篇    下一篇

2种同构紫精配位聚合物的合成及其光致变色性能

刘进剑1,2(), 刘娜1, 杨凤意1   

  1. 1.山西师范大学化学与材料科学学院,太原 030031
    2.山西师范大学现代文理学院,临汾 041000
  • 收稿日期:2022-05-19 接受日期:2022-11-15 出版日期:2023-02-01 发布日期:2023-02-27
  • 通讯作者: 刘进剑
  • 基金资助:
    山西省应用基础研究面上项目(20210302124260);山西师范大学研究生教育创新项目(2021XSY039)

Synthesis and Photochromic Properties of Two Isostructural Viologen Coordination Polymers

Jin-Jian LIU1,2(), Na LIU1, Feng-Yi YANG1   

  1. 1.School of Chemistry and Material Science,Shanxi Normal University,Taiyuan 030031,China
    2.Modern College of Humanities and Science,Shanxi Normal University,Linfen 041000,China
  • Received:2022-05-19 Accepted:2022-11-15 Published:2023-02-01 Online:2023-02-27
  • Contact: Jin-Jian LIU
  • About author:liujj@sxnu.edu.cn
  • Supported by:
    the Natural Science Foundation of Shanxi Province(20210302124260);the Graduate Education Innovation Project of Shanxi Normal University(2021XSY039)

摘要:

变色材料作为一种新型的智能材料,在光存储信息和光学器件等领域具有巨大的应用潜力。以具有柔性骨架的紫精配体1,1'-双(4-羧基苄基)-4,4'-联吡啶二氯化物(H2BpybcCl2)作为功能配体,与过渡金属离子Mn2+和Cd2+自组装,合成2个同构配位聚合物[Mn(Bpybc)Cl2·H2O] n1)和[Cd(Bpybc)Cl2·4H2O] n2)。X射线单晶衍射表明,2个化合物为一维链状结构。在紫外灯照射下,光诱导电子转移而产生紫精自由基,2种化合物均表现出明显的光致变色行为。

关键词: 紫精, 配位聚合物, 晶体结构, 光致变色, 电子转移。

Abstract:

As a new type of smart material, chromic materials have great applications in the fields of optical storage information and optical devices. Self-assembly of transition metal ions Mn2+ and Cd2+ with a viologen ligand, 1,1′-bis(4-carboxybenzyl)-4,4′-bipyridinium dichloride (H2BpybcCl2) with flexible backbone, forms two novel isostructural coordination polymers, [Mn(Bpybc)Cl2·H2O] n (1) and [Cd(Bpybc)Cl2·4H2O] n (2). X-ray single-crystal diffraction shows that two compounds are one-dimensional chain structures. Both compounds exhibit obvious photochromic behaviors under UV irradiation, which is caused by photo-induced electron transfer to generate viologen free radicals.

Key words: Viologens, Coordination polymers, Crystal structure, Photochromism, Electron transfer

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