中文摘要：

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”一氧化物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。

英文摘要：

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.