Tian Jin-Jin, Deng Dian-Dian, Wang Long, Chen Zhao, Pu Shouzhi
Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang, China.
Department of Ecology and Environment, Yuzhang Normal University, Nanchang, China.
Front Chem. 2022 Jan 26;9:811294. doi: 10.3389/fchem.2021.811294. eCollection 2021.
A tetraphenylethene (TPE)-modified rhodanine derivative was successfully designed and prepared, and this luminophor showed intramolecular charge transfer nature from the TPE unit to the rhodanine-3-acetic acid unit. Interestingly, this luminogen not only exhibited typical aggregation-induced emission enhancement (AIEE) behavior but also showed good cell imaging performance. Remarkably, this AIEE-active TPE-containing rhodanine derivative possessed noticeable solvatochromic fluorescence effect involving multiple fluorescent colors of green, yellow-green, yellow, orange, and red. Meanwhile, this fluorescigenic compound displayed reversible mechanochromic fluorescence behavior based on the mutual transformation of between stable crystalline and metastable amorphous states. On the other hand, this multifunctional fluorophor could selectively and sensitively detect Hg in an acetonitrile solution. Furthermore, this chemosensor could also be used to detect Hg on test paper strips.
成功设计并制备了一种四苯乙烯（TPE）修饰的罗丹宁衍生物，该发光体表现出从TPE单元到罗丹宁-3-乙酸单元的分子内电荷转移性质。有趣的是，这种发光团不仅表现出典型的聚集诱导发光增强（AIEE）行为，还具有良好的细胞成像性能。值得注意的是，这种含AIEE活性TPE的罗丹宁衍生物具有显著的溶剂化变色荧光效应，涉及绿色、黄绿色、黄色、橙色和红色等多种荧光颜色。同时，这种荧光化合物基于稳定晶体态和亚稳态非晶态之间的相互转变，表现出可逆的机械变色荧光行为。另一方面，这种多功能荧光团能够在乙腈溶液中选择性且灵敏地检测汞。此外，这种化学传感器还可用于试纸条上检测汞。
