In this paper, we developed a red-emitting fluorescent probe TPSN based on triphenylamine-functionalized benzothiazole salts. TPSN exhibits a strong luminescence emission at about 637 nm in viscous media. Moreover, the fluorescence intensity of TPSN enhances approximately 94-fold from water to 99% glycerol. Cell imaging experiments reveals that TPSN presents high specificity for mitochondrial localization. The related mechanism study indicates that the localization property of TPSN is independent of the mitochondrial membrane potential. As a result, TPSN offers a promising tool to monitor the mitochondria viscosity in living cells.
在这篇论文中,我们基于
三苯胺官能化的
苯并噻唑盐开发了一种红色发光荧光探针TPSN。TPSN在粘性介质中以约637纳米波长的光强发光。此外,TPSN的荧光强度从
水到99%的
甘油提高了约94倍。细胞成像实验表明,TPSN对线粒体定位具有高度特异性。相关机制研究表明,TPSN的定位特性与线粒体膜电位无关。因此,TPSN为监测活细胞中的线粒体粘度提供了有前景的工具。