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. 2016 Dec 5:169:38-44.
doi: 10.1016/j.saa.2016.06.022. Epub 2016 Jun 15.

A fluorescence turn-on chemosensor for hydrogen sulfate anion based on quinoline and naphthalimide

Zaoli Luo  1 , Kai Yin  1 , Zhu Yu  1 , Mengxue Chen  1 , Yan Li  1 , Jun Ren  2
Affiliations

A fluorescence turn-on chemosensor for hydrogen sulfate anion based on quinoline and naphthalimide

Zaoli Luo et al. Spectrochim Acta A Mol Biomol Spectrosc. .

Abstract

A new fluorescence turn-on chemosensor 1 based on quinoline and naphthalimide was prepared and its anion sensing toward various anions behavior was explored in this paper. Sensor 1 exhibited a highly selective fluorescent response toward HSO4(-) with an 8-fold fluorescence intensity enhancement in the presence of 10equiv. of HSO4(-) in DMSO-H2O (1/1, v/v) solution. The sensor also displayed high sensitivity to hydrogen sulfate and the detection limit was calculated to be 7.79×10(-7)M. The sensing mechanism has been suggested to proceed via a hydrolysis process of the Schiff base group. The hydrolysis product has been isolated and further identified by (1)H NMR and MS.

Keywords: Fluorescent chemosensor; Hydrogen sulfate; Hydrolysis; Naphthalimide; Quinoline.

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