A ratiometric fluorescent probe for detection of endogenous and exogenous hydrogen sulfide in living cells.

Affiliation

Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province and State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, PR China. Electronic address: [Email]

Abstract

A ratiometric visualized fluorescent probe of H2S of intramolecular charge transfer (ICT) and excited intramolecular proton transfer (ESIPT) mechanisms due to solvation effects has been designed and synthesized. This chemosensor shows the distinct signal changes with dual-emission in blue and green fluorescence spectral channel (from 495 nm to 525 nm) upon the addition of H2S in a single wavelength excitation. This chemosensor exhibits the low detection limit (91 nM) and high sensitivity and selectivity. Based on this, this chemosensor was successfully used not only to monitor H2S exogenously but also used to detect and image the endogenously generated H2S in HeLa cells with excellent performance.

Keywords

Cells imaging,Endogenous and exogenous,Fluorescent sensor,H(2)S,Ratiometric,

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