Yu Fashuo, Guo Xiangfeng, Tian Xiujuan, Jia Lihua
College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar, 161006, China.
Key Laboratory of Fine Chemicals, College of Heilongjiang Province, Qiqihar University, Qiqihar, 161006, China.
J Fluoresc. 2017 Mar;27(2):723-728. doi: 10.1007/s10895-016-2003-0. Epub 2016 Dec 21.
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.
基于N,N'-二(喹啉-8-基)草酰胺设计并合成了一种新型比率荧光传感器（DQO），用于选择性检测锌。当锌存在于pH 8.66的缓冲水溶液中时，DQO的荧光比率（I /I ）提高了10倍。该传感器在0-15μM的浓度范围内对锌呈现线性响应，计算得出检测限为2.4μM。Job曲线表明形成了化学计量比为1:1的DQO/锌配合物，计算得出DQO/锌配合物的表观缔合常数为1.5×10 M。
Zotero 插件