4,5-双((5-氯-2-甲基噻吩-3-基)-1,2-二苯基-1H-咪唑的光致变色性能

Study on the photochromic properties of 4,5-bis(5-chloro-2-methylthiophen-3-yl)-1,2-diphenyl-1H-imidazole

设计合成了4,5-双(5-氯-2-甲基噻吩-3-基)-1,2-二苯基-1H-咪唑化合物L,通过~1HNMR、^(13)CNMR和元素分析对其分子结构进行表征,并研究了酸效应对其吸收光谱、荧光光谱和热稳定性的影响。结果表明,酸效应对化合物L吸收光谱的影响很小,但通过酸效应能够对化合物L的荧光光谱和热稳定性进行有效的调节。另外,化合物L在质子化前后均表现出良好的光致变色性能,并显示出与众不同的"on to on"荧光特性。

4,5-bis（5-chloro-2-methylthiophen-3-yl）-1,2-diphenyl-1H-imidazole（L） is synthesized and characterized by 1HNMR,（13）CNMR and elemental analysis.The effects of acid on the absorption spectra,fluorescence spectra and thermal stability of L are investigated.The results show that the acid effect on the absorption spectra of L is very little,but the fluorescence spectra and thermal stability of L can be effectively regulated by the acid.In addition,L shows good photochromism before and after the protonation,as well as the distinctive ＂on to on＂ fluorescence characteristic.