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Precise aggregation-induced emission enhancement via H+ sensing and its use in ratiometric detection of intracellular pH values

机译:通过H +传感进行的精确聚集诱导的发射增强及其在比例检测细胞内pH值中的应用

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摘要

A pyridyl functionalised tetraphenylethylene (Py-TPE) for ratiometric fluorescent detection of intracellular pH values is reported. The Py-TPE fluorescent probe can be used for H+ sensing in organic solvents (CHCl3, DMF and MeOH) and the change in optical density through absorption, emission and naked eye detection was modulated. On addition of TFA, an aggregation-induced enhancement of emission with an increase in quantum yield of 0.11 to 0.63, due to an intramolecular charge transfer (ICT) process was observed. This process is reversed by addition of TEA resulting in a cycle that can be repeated several times.
机译:吡啶基官能化的四苯乙烯(Py-TPE)用于细胞内pH值的比例荧光检测。 Py-TPE荧光探针可用于有机溶剂(CHCl3,DMF和MeOH)中的H +感测,并且可以调节通过吸收,发射和肉眼检测引起的光密度变化。加入TFA后,观察到由于分子内电荷转移(ICT)过程,聚集诱导的发射增强,量子产率提高了0.11至0.63。通过添加TEA可以逆转此过程,从而可以重复进行多次。

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