一种新型的光调控磁分子体系的合成与性能研究  

Synthesis and Properties of a New Photomodulation Magnetism Molecular System

作　　者：陈勇[1] 庞美丽[1] 程凯歌[1] 王英[1] 韩杰[1] 孟继本[1] 

机构地区：[1]南开大学化学系

出　　处：《化学学报》2008年第9期1091-1096,共6页Acta Chimica Sinica

基　　金：国家自然科学基金(Nos.20602020,20490210)资助项目

摘　　要：将稳定的四甲基咪唑啉氮氧自由基嫁接到新型的光致变色化合物双(6-甲基-3-乙基-3-羟基-1-氧代-2-亚茚满基)(1)的分子母体中,成功合成了新型多功能化合物1-((6'-甲基-3,3'-二乙基-3,3'-二羟基-1,1'-二氧代-[2,2']-联亚茚满基)-6-基甲基)-4-(4",4",5",5"-四甲基咪唑啉-2"-基)吡啶溴化物3"-氧化物1"-氧基(3).对化合物3的光致变色性质,ESR波谱以及磁性质进行了研究.化合物3光照后颜色发生变化,ESR信号表现出久期增宽.变温磁化率的测试结果显示,化合物3光照后反铁磁相互作用进一步增强.研究结果表明化合物3的颜色和磁性的变化均可用光照进行调控.Stable nitronyl nitroxide radical was incorporated into the benzene ring of novel photochromic bis（3-ethyl-3-hydroxy-6-methyl-l-oxoindan-2-ylidene）, leading to the synthesis of novel multifunctional compound l-（（3,3＇-diethyl-3,3＇-dihydroxy-6＇-methyl- 1, 1＇-dioxo-[2,2＇]-biindanylidene）-6-ylmethyl）-4-（4＂,4＂, 5＂,5＂-tetramethylimidazoline-2＂-yl） pyridinium bromide 3＂-oxide 1＂-oxyl （3）. The photochromic property, ESR spectroscopy and magnetic property of the title compound were investigated. Compound 3 possesses visible photochromism upon photoirradiation, and its ESR signal undergoes secular broadening after photoirradiation. The magnetic susceptibility measurement shows that the antiferromagnetic interaction in 3 becomes stronger after photoirradiation. The results demonstrated that both the colour and the magnetic property of compound 3 could be modulated by photoirradiation.

关 键 词：联茚满烯二酮 光控磁性 光致变色 固态多功能材料 

分 类 号：O641.4[理学—物理化学]