Developing a novel ratiometric fluorescent probe based on ESIPT for the detection of pH changes in living cells
作者:Wenhui Song、Baoli Dong、Yaru Lu、Weiying Lin
DOI:10.1016/j.tetlet.2019.05.047
日期:2019.6
could cause disorder of cell function which may cause neurological diseases. Herein, we present two novel ratiometric fluorescent probes to detect pH changes. The probes employed 2-(2′-hydroxyphenyl)benzothiazole as fluorescent platform, and displayed desirable fluorescence response to pH on the basis of excited state intramolecular proton transfer (ESIPT) process. The probe BtyC-1 showed green fluorescence
作为细胞内新陈代谢的重要参数,pH在维持正常生理过程中起着重要作用。pH值异常可能会导致细胞功能紊乱,进而导致神经系统疾病。在本文中,我们提出了两种新颖的比例荧光探针来检测pH值变化。探针采用2-(2'-羟苯基)苯并噻唑作为荧光平台,并基于激发态分子内质子转移(ESIPT)过程显示了对pH的理想荧光响应。探针BtyC-1在酸性条件下在546 nm处显示绿色荧光,而在碱性条件下在473 nm处显示强蓝色荧光,在546 nm时显示弱绿色荧光。生物学实验表明,探针BtyC-1可以成功地用于细胞pH和NH 4 Cl诱导的活细胞pH变化的比例成像。