| 曹颖,乔钰茜,车圆圆,盛蕊,刘浪.化学通报,2022,85(1):92-96,115. |
| 三种苯并噻吩缩氨基硫脲类化合物的固态光致变色性能研究 |
| Solid-state photochromic properties of three benzothiophene thiosemicarbazone compounds |
| 投稿时间：2021-05-30 修订日期：2021-07-06 |
| DOI： |
| 中文关键词: 苯并噻吩 氨基硫脲 光致变色 席夫碱 构效关系 |
| 英文关键词:benzothiophene, thiosemicarbazide, photochromism, Schiff base, structural-activity relationship |
| 基金项目:国家自然科学基金项目(21961039)资助 |
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| 中文摘要: |
| 本文通过结构修饰,在苯并噻吩缩氨基硫脲侧链的同一位点4位引入具有不同共轭性的取代基(烯丙基、环已烷基和苯基),合成了三种具有固态光致变色性能的1-(苯并噻吩-2亚甲基)-4-取代基-氨基硫脲类化合物,并对化合物的组成和结构进行了表征,同时利用紫外-可见吸收光谱和光致变色动力学分析了三种化合物的光致变色性能、热力学变化和抗疲劳性,探讨了该类化合物的构效关系,结果表明：该类化合物光致变色性能随分子共轭性的改变呈规律性变化,一般而言,取代基的共轭性越小,化合物光致变色速率则越快,抗疲劳性能越好,研究结果为探索新颖的有机固态光致变色材料提供了理论基础。 |
| 英文摘要: |
| Based on the structural modification, three compounds, 1-(benzothiophene-2-methylene)-4-substituted-thiosemicarbazides were synthesized through introducing three substituents with different conjugacy (allyl, cyclohexyl and phenyl) at the same position of the side chain for benzothiophenethiosemicarbazone. At the same time, the photochromic properties、thermodynamics and fatigue resistance are analyzed by UV-Vis absorption spectra and dynamics, and the structure-activity relationship is discussed. The results show that molecular conjugation plays an important role in their photochromic properties. Generally, the smaller conjugation of substituents is, the better the photochromic rate and fatigueresistance are. The work may provide a theoretical basis for exploring novel organic solid state photochromic materials. |
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