Ally Khamis Nassor, ÖztÜrk Leyla, KÖse Mahmut
Department of Chemistry, Faculty of Arts and Science, Zonguldak Bülent Ecevit University, Zonguldak Turkey.
Turk J Chem. 2020 Aug 18;44(4):1031-1042. doi: 10.3906/kim-2003-31. eCollection 2020.
Four new fulgimides possessing a fluorescent coumarin unit were synthesized from the corresponding fulgides, and their photochromic as well as fluorescence properties were investigated. The open-ring forms of coumarin fulgimides were found to exhibit fluorescence in the visible region. Upon exposure to UV light, the fulgimides were transformed into the nonfluorescent closed-ring forms, which can be reverted to the initial fluorescent open-ring forms on exposure to visible light. The efficiency of quenching of fluorescence was as high as 95% at the photostationary state of UV irradiation.
由相应的俘精酸酐合成了四种具有荧光香豆素单元的新型俘精酰亚胺，并对其光致变色和荧光性质进行了研究。发现香豆素俘精酰亚胺的开环形式在可见光区域表现出荧光。在紫外光照射下，俘精酰亚胺转变为无荧光的闭环形式，在可见光照射下可恢复为初始的荧光开环形式。在紫外光照射的光稳态下，荧光猝灭效率高达95%。
