氧化还原响应性环金属钌、锇配合物  

Redox-responsive cyclometalated ruthenium and osmium complexes

作　　者：龚忠亮[1] 姚长江[1] 邵将洋[1] 聂海晶[1] 唐健洪 钟羽武[1,2] 

机构地区：[1]北京分子科学中心中国科学院光化学重点实验室中国科学院化学研究所 [2]中国科学院大学

出　　处：《中国科学：化学》2016年第10期1093-1100,共8页SCIENTIA SINICA Chimica

基　　金：国家自然科学基金(编号:21271176;21472196;21501183;21521062);中国科学院战略性先导科技专项(编号:XDB12010400)资助项目

摘　　要：金属有机共轭配合物因其良好的氧化还原特性和丰富的光、电、磁等物理化学性质成为一种重要的响应性功能分子材料,是分子导线、分子开关、分子机器、分子存储、光电检测等应用的材料基础.本文主要介绍近几年本课题组在环金属配合物的分子设计及其氧化还原响应方面的工作进展,具体包括环金属双钌共轭配合物、环金属参与的不对称双中心共轭分子以及氧化还原多中心共轭配合物3种体系.这些化合物在较低电位处具有两步以上可逆氧化还原过程,并且每一种氧化还原状态具有明显不同的物理化学性质.以电化学电压为刺激响应手段,这些金属有机分子材料的近红外吸收和顺磁信号可以发生可逆变化,成为近红外电致变色及光信息存储的重要分子基础.Organometallic conjugated complexes have become an important stimuli-responsive material because of their appealing redox properties and rich photonic,electronic,and magnetic properties.They are potentially useful in a wide range of applications such as molecular wires,molecular switches,molecular machines,molecular memory,and optoelectronic detections.This review outlines our recent progress on the molecular design of cyclometalated complexes and their applications as redox-responsive materials with visible and near-infrared（NIR） absorptions and electron paramagnetic resonance as readout signals.Three molecule systems are introduced,including cyclometalated diruthenium complexes,asymmetric bi-center complexes with cyclometalated ruthenium,and multi-center redox-active organometalic compounds.These compounds display multiple reversible redox processes at low potentials and each redox state possesses significantly different physical and chemical properties.Using electrochemical potentials as input signals,these materials shown reversible NIR absorption spectral changes,making them potentially useful in NIR electrochromism and information storage.

关 键 词：刺激响应材料 电活性材料 金属有机材料 三芳胺 近红外 电子顺磁信号 

分 类 号：O641.4[理学—物理化学]