Two novel fluorescent calix4arene derivatives with benzoazole units in 1,3-alternate conformation for selective recognition to Fe^(3+) and Cr^(3+)

摘要

Two novel fluorescent calix[4]arene derivatives 1a and 1b with benzoxazole or benzothiazole units in 1,3-alternate conformation have been synthesized and characterized by IR,~1H NMR,^(13)C NMR and MS.Their complexation properties to different heavy and transition metal ions have been studied by UV-vis spectroscopy and fluorescence spectrometer.Compounds 1a and 1b show selective recognition to Fe^(3+) and Cr^(3+).