文献类型： 外文期刊

作者： Huo, Zhiming ² ; Li, Zhipeng ¹ ; Wang, Tingting ¹ ; Zeng, Heping ¹ ;

作者机构： 1.S China Univ Technol, Sch Chem & Chem Engn, Inst Funct Mol, Guangzhou 510641, Guangdong, Peoples R China

2.Guangdong Acad Agr Sci, Inst Agr Resources & Environm, Guangzhou 510640, Guangdong, Peoples R China

3.S China Univ Technol, State Key Lab Luminescent Mat & Devices, Guangzhou 510641, Guangdong, Peoples R China

关键词： Carbazole;Dithienylmaleimide;Hindrance;Photochromism

期刊名称：TETRAHEDRON （ 影响因子：2.457； 五年影响因子：2.22 ）

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收录情况： SCI

摘要： Dithienylmaleimide derivatives 7-27 were synthesized by introducing N-substituted carbazole for photo-stabilizing purpose, and the structures were fully confirmed. The photochromism and photo-stability were recorded via UV-vis spectra. Only ortho compounds 8-17 with N-substituents on carbazole moiety showed escalated photochromic change, while compound 7 and the para counterparts 18-27 showed no appreciable photochromism. Additionally, compounds 8-18 exhibited good photo-stability except 17 under 254 nm irradiation. The unstability of 17 may probably due to overrunning hindrance. These photochromic patterns indicated that hindrance and electronic effect mutually paid a decisive influence on the photochromism and photo-stability, which potentially exploited a new way to construct novel photochromic materials with regulable and conceivable performance.