自旋转换现象及其研究进展  

Spin Crossover and Its Research Progress

作　　者：唐国涛[1] 王庆伦[1] 廖代正[1] 杨光明[1] 

机构地区：[1]南开大学化学系,天津300071

出　　处：《化学进展》2010年第2期257-264,共8页Progress in Chemistry

基　　金：国家自然科学基金项目(No.20601014)资助

摘　　要：随着分子科学的发展,越来越多的双稳态体系被用作分子基材料器件的载体,在温度传感器、光开关及信息记忆、存储等领域得到应用。自旋转换配合物是目前研究最为广泛的双稳态体系。在一种外界微扰(如温度、压力、磁场、光辐射以及特定客体分子或化学环境)下,就可以发生一种稳定态向另一种稳定态的转变,从而起到信息存储或开关的作用。本文综述了近几年来自旋转换现象的最新研究成果,介绍了自旋转换的概念和研究意义,对可以发生自旋转换的体系进行了总结,特别是Fe(Ⅱ)和Fe(Ⅲ)体系;并对目前的研究热点和前景进行了总结和展望。With the development of molecular science, more and more bistability systems are used as the carriers of molecular-based devices, such as temperature sensor, light switch and information storage devices. Spin crossover compounds are widely studied in bistability systems at present. With the appropriate external perturbations （such as temperature, pressure, magnetic field, light, and guest/chemical environment）, transition between high spin state and low spin state may occur, which confers a memory effect or switching responses on the system. In this paper, we briefly introduce the research advances of spin crossover in recent years, including the concept, significance and species of spin crossover system, especially the Fe（Ⅱ）and Fe（Ⅲ）species. The perspective of future development in this field and the research frontiers nowadays are also briefly mentioned.

关 键 词：自旋转换 双稳态 协同作用 信息存储 

分 类 号：O646.8[理学—物理化学] TB34[理学—化学]