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化学学报
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化学学报 ›› 2008, Vol. 66 ›› Issue (9): 1091-1096. 上一篇    下一篇

研究论文

一种新型的光调控磁分子体系的合成与性能研究

陈勇1,2，庞美丽*,1，程凯歌1，王英1，韩杰1，孟继本*,1   

  1. (1南开大学化学系 天津 300071)
    (2安阳师范学院化学系 安阳 455002)
  • 投稿日期:2007-07-15 修回日期:2008-01-18 发布日期:2008-05-14
  • 通讯作者: 孟继本

Synthesis and Properties of a New Photomodulation Magnetism Molecular System

CHEN Yong12 PANG Mei-Li*1 CHENG Kai-Ge1 WANG Ying1 HAN Jie1 MENG Ji-Ben*1   

  1. (1 Department of Chemistry, Nankai University, Tianjin 300071)
    (2 Department of Chemistry, Anyang Normal College, Anyang 455002)
  • Received:2007-07-15 Revised:2008-01-18 Published:2008-05-14
  • Contact: MENG Ji-Ben

PDF

489

被引次数

9

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.

关键词: 联茚满烯二酮, 光控磁性, 光致变色, 固态多功能材料

Stable nitronyl nitroxide radical was incorporated into the benzene ring of novel photochromic bis(3-ethyl-3-hydroxy-6-methyl-1-oxoindan-2-ylidene), leading to the synthesis of novel multifunctional compound 1-((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.

Key words: bis(indanon-2-ylidene), photomodulation magnetism, photochromism, organic solid multi- functional material