Chai Hui, Liu Guangfei, Liu Lang, Jia Dianzeng
Institute of Applied Chemistry, Xinjiang University, Urumqi 830046, PR China.
Spectrochim Acta A Mol Biomol Spectrosc. 2005 Sep;61(11-12):2590-4. doi: 10.1016/j.saa.2004.09.027. Epub 2004 Dec 8.
A new photochromic compound 1,3-diphenyl-4-(4'-fluro)benzal-5-pyrazolone-4-ethyl thiosemicarbazone (DP4FBP-ETSC) was synthesized by direct condensation of 1,3-diphenyl-5-pyrazolone with N4-ethyl thiosemicarbazide. The product was characterized by elemental analysis, IR and 1H NMR spectra. The photochromic properties of the compound were studied using time-dependent fluorescence emission spectra, the UV-vis reflection spectra in the solid state and the UV-vis absorption spectroscopy in liquid. The reaction rate constant of compound was also analyzed. The results show that DP4FBP-ETSC can perform photochromism.
通过1,3 - 二苯基 - 5 - 吡唑啉酮与N4 - 乙基硫代氨基脲直接缩合合成了一种新型光致变色化合物1,3 - 二苯基 - 4 - (4'-氟)苯甲酰基 - 5 - 吡唑啉酮 - 4 - 乙基硫代氨基脲(DP4FBP - ETSC)。通过元素分析、红外光谱和1H核磁共振光谱对产物进行了表征。利用时间分辨荧光发射光谱、固态紫外 - 可见反射光谱和液体紫外 - 可见吸收光谱研究了该化合物的光致变色性能。还分析了该化合物的反应速率常数。结果表明DP4FBP - ETSC能发生光致变色。
