title: A Ratiomeric Fluorescent Sensor for Zn2+Based on N,N'-Di(quinolin-8-yl)oxalamide.
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 Zn2+. The fluorescence ratio (I536 nm/I450 nm) of DQO was enhanced 10-fold when Zn2+was present in a buffer aqueous solution at pH 8.66. The sensor showed linear response toward Zn2+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/Zn2+complex with 1:1 stoichiometry, and the apparent association constant of DQO/Zn2+complex was computed to be 1.5 × 104M-1.
authors.affiliation: College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar, 161006, China.
authors.forename: Fashuo
authors.initials: F
authors.lastname: Yu
authors.affiliation: College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar, 161006, China. xfguo@163.com.|Key Laboratory of Fine Chemicals, College of Heilongjiang Province, Qiqihar University, Qiqihar, 161006, China. xfguo@163.com.
authors.forename: Xiangfeng
authors.initials: X
authors.lastname: Guo
authors.affiliation: College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar, 161006, China.
authors.forename: Xiujuan
authors.initials: X
authors.lastname: Tian
authors.affiliation: College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar, 161006, China. jlh29@163.com.
authors.forename: Lihua
authors.initials: L
authors.lastname: Jia
keywords: Oxalamidoquinoline; Ratiometric fluorescence; Sensor; Zinc ion