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本论文合成了三种新的二芳基乙烯类光致变色化合物1-(2,5二甲基噻吩-3-基),2-[2-甲基-5-(4-甲氧苯基噻吩)-3-基]全氟环戊烯(1a),1-(2,5二甲基噻吩-3-基),2-[2-甲基-5-(4-乙氧苯基噻吩)-3-基]全氟环戊烯(2a),1-(2,5二甲基噻吩-3-基),2-[2-甲基-5-(4-氯苯基噻吩)-3-基]全氟环戊烯(3a),并且研究了它们的光电特性。实验结果表明这些二芳烯化合物在溶液和PMMA膜片中均具有良好的光致变色性能。在313nm紫外灯的照射下,这些二芳烯化合物的溶液和PMMA膜片均由无色变为蓝色,在适当波长可见光照射下,它们均从有色态返回到无色态。在不同的溶液和PMMA膜片中,这些化合物在它们各自的激发波长的照射下均显示出较强的荧光。在313nm紫外灯的照射下,二芳烯由开环态变为闭环态,荧光强度逐渐降低。
In this thesis, three new diarylethene photochromic compounds, such as 1- (2,5-dimethylthiophen-3-yl), 2- [2-methyl-5- Thiophene) -3-yl] perfluorocyclopentene (1a), 1- (2,5 dimethylthien-3-yl), 2- [2-methyl-5- ) -3-yl] perfluorocyclopentene (2a), 1- (2,5-dimethylthien-3-yl) 3-yl] perfluorocyclopentene (3a), and their photoelectric properties were studied. The experimental results show that these di-alkene compounds have good photochromic properties in both solution and PMMA films. Under the irradiation of 313nm UV lamp, the solution of these diarylethene compounds and the PMMA film changed from colorless to blue, and returned to the colorless state from the colored state under the visible light irradiation of the proper wavelength. In different solutions and PMMA membranes, these compounds show a strong fluorescence at their respective excitation wavelengths. Under the irradiation of 313nm UV lamp, the diarylide changed from open-ring to closed-loop and the fluorescence intensity decreased gradually.