摘要
随着智能材料的不断发展,多重刺激响应型紫精配位聚合物有望应用于材料学和生物学等工程领域,引起了广泛的兴趣。为了获得此类化合物,以羧苄基紫精、1,1'-双(4-羧苄基)-4,4'-联吡啶二氯化物(H_(2)BpybcCl_(2))为功能配体,与过渡金属离子Ni^(2+)(1)、Mn^(2+)(2)和Co^(2+)(3)自组装反应,形成3个相同结构的二维配位聚合物{[M_(2)(Bpybc)_(3)(H_(2)O)_(6)]·(OH)_(4)·nH_(2)O}n。由于紫精自由基的存在,在紫外灯照射下,3个化合物均表现出明显的光致变色行为。加热的条件下,3个化合物也表现出由于脱水导致的配位场d-d跃迁而发生的颜色变化。
With the continuous development of smart materials,multiple-responsive viologen coordination polymers are expected to be applied in engineering fields such as materials science and biology,and have aroused extensive interest.In order to obtain such compounds,a carboxybenzyl viologen ligand,1,1'-bis(4-carboxybenzyl)-4,4'-bipyridine dichloride(H_(2)BpybcCl_(2))is used as the functional ligand to react with the transition metal ions Ni^(2+)(1),Mn^(2+)(2)and Co^(2+)(3)to form three isostructural two-dimensional(2D)coordination polymers{[M_(2)(Bpybc)_(3)(H_(2)O)_(6)]·(OH)_(4)·nH_(2)O}n.Due to the existence of viologen radicals,the three compounds exhibited photochromic behaviors under UV light irradiation.Upon heating,the three compounds also showed obvious color changes due to d-d transitions in the coordination field caused by dehydration.
作者
刘进剑
陆艺炜
LIU Jin-Jian;LU Yi-Wei(Modern College of Humanities and Science of Shanxi Normal University,Linfen 041000,China;School of Chemistry and Material Science,Shanxi Normal University,Taiyuan 030031,China)
出处
《应用化学》
CAS
CSCD
北大核心
2023年第3期397-403,共7页
Chinese Journal of Applied Chemistry
基金
山西省高等学校科技创新项目(No.2021L608)资助。
关键词
紫精
配位聚合物
光致变色
热致变色
Viologens
Coordination polymers
Photochromism
Thermochromism
