Two-Step Sensing, Colorimetric and Ratiometric Fluorescent Probe for Rapid Detection of Bisulfite in Aqueous Solutions and in Living Cells.

ABSTRACT: Bisulfite and sulfite (HSO₃ ^-/SO₃ ^2-) are not only widely used toxic chemicals but also active anions with important biological functions. Hence, the development of new detection methods for HSO₃ ^-/SO₃ ^2- is important for environmental security and human health. In this paper, we report a symmetrical hemicyanine for the detection of HSO₃ ^-/SO₃ ^2-, SHC, which is constructed with p-diphthalaldehyde with trimethylbenzoindolium via condensation. The red fluorescent probe can fast respond to HSO₃ ^-/SO₃ ^2- (<30 s) to give cyan fluorescence, and its sensing process is twice nucleophilic additions, which were o

SUBMITTER: Zheng XL 

PROVIDER: S-EPMC6173560 | biostudies-literature | 2018 Sep

REPOSITORIES: biostudies-literature