Synthesis and Performances of a New Ag+-selective Fluorescent Sensor Based on Calix[4]arene

doi:10.7503/cjcu20111172

Abstract

Abstract:

A new calix[4]arene derivative 2 with naphthalene fluorophores at the lower rim was synthesized. The chemosensing behavior of the host compound 2 for metal ions was investigated by fluorescence spectra. The results revealed that chemosensor 2 containing S₂O₂ atoms as soft donors had a good selectivity towards Ag⁺ ion. It exhibits high sensitivity toward Ag⁺ over a wide range of metal ions in C₂H₅OH/H₂O(3:2, volume ratio). The fluorescence quenching behavior was observed under binding of the Ag⁺ with a detection limit of 2.34×10^-7 mol/L.

Key words: Fluorescence, Chemosensor, Calix[4]arene, Silver, Naphthalene, Sulfur

CLC Number:

O626

TrendMD:

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Synthesis and Performances of a New Ag⁺-selective Fluorescent Sensor Based on Calix[4]arene

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