A Simple and Effective 1,2,3-Triazole Based “Turn-On” Fluorescence Sensor for the Detection of Anions

Document Type

Article

Publication Date

2015

Publication Title

New Journal of Chemistry

DOI

10.1039/C4NJ01411A

ISSN

1369-9261

Abstract

A novel and effective 1,2,3-triazole based fluorescence chemosensor has been synthesized for the specific detection of anions in homogeneous medium. Notably, the molecule, synthesized in one step using “Click chemistry”, is a simple 1,4-diaryl-1,2,3-triazole, containing a phenol moiety. The probe displayed the strongest response to fluoride ion through the “turn-on” fluorescence sensing mechanism when screened for selectivity and sensitivity against a series of anions (F, Cl, Br, I, H2PO4, ClO4, OAc, BF4). Fluorescence spectroscopy and Nuclear Magnetic Resonance Spectroscopy (NMR) studies substantiate 1:1 stoichiometry between the probe and fluoride anion. Kinetic studies and the single crystal X-ray spectroscopic evidence revealed the binding interaction occurs with the phenolic group and the anion.

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