A Ratiomeric Fluorescent Sensor for Zn Based on N,N'-Di(quinolin-8-yl)oxalamide

Overview

Journal J Fluoresc

Specialties Biophysics
Chemistry

Date 2016 Dec 23

PMID 28004345

Citations 4

Authors

Fashuo Yu

Xiangfeng Guo

Xiujuan Tian

Lihua Jia

Affiliations

Soon will be listed here.

Abstract

A new ratiometric fluorescent sensor (DQO) based on N,N'-Di(quinolin-8-yl) oxalamide has been designed and synthesized for selective detection of Zn. The fluorescence ratio (I /I ) of DQO was enhanced 10-fold when Zn was present in a buffer aqueous solution at pH 8.66. The sensor showed linear response toward Zn in the concentration range 0-15 μM, and the detection limit was calculated to be 2.4 μM. A Job's plot implied the formation of a DQO/Zn complex with 1:1 stoichiometry, and the apparent association constant of DQO/Zn complex was computed to be 1.5 × 10 M.

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