A colorimetric and ratiometric fluorescent chemosensor based on furan-pyrene for selective and sensitive sensing Al^(3+)

摘要

A new pyrene derivative BF bearing a furan group was synthesized via a one-step reaction as a colorimetric and ratiometric chemosensor for Al^(3+) in ethanol-H_2O(9:1,v/v,pH 7.2,HEPES buffer)solution.This chemosensor could selectively recognize Al^(3+) in the presence of other competing ions.Low limit of detection(LOD) and high association constant revealed its superior sensitivity and binding affinity toward Al^(3+).Besides,the probe BF performed perfectly in a reversibility test using EDTA.The mechanism of the interaction has been confirmed by ~1H NMR titration.Importantly,chemosensor BF has also been utilized to detect Al^(3+) on test paper strips,which showed its potential for practical applications.