Abstract：
A new family of tetraphenylethylene-based N,O-chelated boranil complexes (TPE-BAs) with aggregation-induced emission (AIE) characteristics were developed. X-ray crystallographic analysis indicated that the terminal substituents on the aniline moiety significantly affected the intermolecular stacking mode, thereby influencing the photophysical properties. The stabilities of these compounds are closely related to the substituents on the aniline moiety. Electron-donor-substituted TPE-BA-OMe exhibited the best stability, whereas the electron-acceptor-substituted compounds exhibited poor stability. Benefitting from its AIE properties and suitable lipophilicity, TPE-BA-OMe served as an excellent fluorescent probe for the specific bioimaging of lipid droplets in living cells.
摘要：
基于四苯基乙烯的N的新家族，开发了具有聚集诱导发射（AIE）特征的O-螯合硼烷络合物（TPE-BA）。X射线晶体学分析表明，苯胺部分上的末端取代基显着影响分子间堆叠模式，从而影响光物理性质。这些化合物的稳定性与苯胺部分上的取代基密切相关。电子给体取代的TPE-BA-OMe表现出最佳的稳定性，而电子受体取代的化合物表现出较差的稳定性。受益于其AIE特性和合适的亲脂性，TPE-BA-OMe是一种出色的荧光探针，可用于活细胞中脂质滴的特异性生物成像。
