A highly sensitive and selective ratiometric fluorescent sensor for Zn 2+ ion based on ICT and FRET

Y Ma, H Chen, F Wang, S Kambam, Y Wang, C Mao…

Index: Chen, Xiaoqiang; Ma, Yang; Chen, Haiyan; Wang, Fang; Kambam, Srinivasulu; Wang, Yong; Mao, Chun Dyes and Pigments, 2014 , vol. 102, p. 301 - 307

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Citation Number: 27

Abstract

Abstract A ratiometric sensor (QA) for detecting Zn 2+ with high sensitivity and selectivity was reported. The fluorescence changes of sensor upon the addition of Zn 2+ were attributed to the conjugation of internal charge transfer and fluorescence resonance energy transfer mechanisms. There is a good linear relationship between the fluorescence ratio I 497 nm/I 420 nm and the concentrations of Zn 2+ ranging from 0 μM to 40 μM, which makes an ...