Nanomolar fluorogenic detection of Al(iii) by a series of Schiff bases in an aqueous system and their application in cell imaging
作者:Sanyog Sharma、Maninder Singh Hundal、Amandeep Walia、Vanita Vanita、Geeta Hundal
DOI:10.1039/c4ob00329b
日期:——
Three positional isomers of a Schiff base containing –OH as end groups have been synthesized and evaluated for selective Al(III) detection due to inhibition of ESIPT, PET and activation of CHEF in 70% aqueous medium. Devoid of any conventional fluorophore, these sensors have nanomolar detection limits with high quantum yields and naked eye sensing of Al(III). Moreover, these probes have been demonstrated to enable the Al(III) detection in live human HeLa cells and rat C6 glioma cells using a confocal microscope.
我们合成了含有 -OH 作为末端基团的希夫碱的三种位置异构体,并评估了它们在 70% 水介质中对 ESIPT、PET 和 CHEF 活化的抑制作用,从而实现了对 Al(III)的选择性检测。这些探针不含任何传统的荧光团,具有纳摩尔检测限、高量子产率和肉眼检测 Al(III)的能力。此外,利用共聚焦显微镜,这些探针还能在活的人类 HeLa 细胞和大鼠 C6 胶质瘤细胞中检测到 Al(III)。