Bis-Triazole-Appended Azobenzene Chromophore for Selective Sensing of Copper(II) Ion

Abstract

A Cu 2þ -specific colorimetric sensor of bis-triazole-appended azobenzene receptors I and II was designed and synthesized. Receptor II shows high selectivity toward Cu 2þ in acetonitrile/water (80:20, v/v) solution based on the internal charge transfer (ICT) mechanism. The tridentate coordination behavior was proposed with 1:1 stoichiometry between receptor II and Cu 2þ . Herein, the Cu 2þ gives rise to a large change in the absorption spectra (from red to pale yellow) that is clearly visible to the naked eye.

A rhodamine‐triazole fluorescent chemodosimeter for Cu2+ detection and its application in bioimaging

“…A click reaction‐generated triazole moiety is also a powerful tool to functionalize biomolecules because of its high selectivity and efficiency . Although many fluorescent sensors bearing a triazole moiety for Cu 2+ have been reported, a rhodamine‐based fluorescent chemodosimeter appended with 1,4‐disubstituted 1,2,3‐triazole moiety based on the hydrolysis mechanism has not been reported to detect Cu 2+ .…”

A water soluble and fast response fluorescent turn-on copper complex probe for H2S detection in zebra fish

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Optical sensor: a promising strategy for environmental and biomedical monitoring of ionic species

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