A differentially selective sensor with fluorescence turn-on response to Zn 2+ and dual-mode ratiometric response to Al 3+ in aqueous media

摘要

A novel quinoline-coumarin (QC) fluoroionophore conjugated by means of a triazolyl-pyrrolidinyl linker exhibits differential dual selectivity for Zn 2+ and Al 3+ in mixed media. QC acts as a turn on fluorescence sensor for Zn 2+ while exhibiting overall ratiometric selectivity for Al 3+ in aqueous media. Moreover, QC exhibited preferential second mode of selectivity for Al 3+ as it ratiometrically displaces Zn 2+ from the [QC + Zn 2+] complex.

关键词