Simple hydrazide-based fluorescent sensors for highly sensitive and selective optical signaling of Cu2+ and Hg2+ in aqueous solution

被引：34

作者：

Wang, Xianyong ^{[1
]}

Zhao, Jingjing ^{[1
]}

Guo, Chaoxia ^{[1
]}

Pei, Meishan ^{[1
]}

Zhang, Guangyou ^{[1
,2
]}

机构：

[1] Unin Jinan, Sch Chem & Chem Engn, Jinan 250022, Peoples R China

[2] Unin Jinan, Shandong Univ, Sch Chem & Chem Engn, Lab Chem Sensing & Anal, Jinan 250022, Peoples R China

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2014年 / 193卷

关键词：

Fluorescence sensor; Water-soluble conjugated polymer; Synthesis; Copper ion; Mercury ion; Sensitive; CONJUGATED POLYELECTROLYTES; MERCURY; IONS;

D O I：

10.1016/j.snb.2013.11.111

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Two new water-soluble hydrazide-based fluorescent probes of poly 3-{[1-(2-hydrazino-2-oxoethyl)piperidin-4-ylidene[methyl}thiophene hydrochloride (PM1 center dot HCl) and poly 3-{[1-(3-hydrazino-3-oxopropyl)piperidin-4-ylidene[methyl}thiophene hydrochloride (PM2 center dot HCl) have been designed and synthesized. PM1 center dot HCl selectively recognizes Cu2+ and Hg2+ in aqueous solution with different emission characteristics (blue-shifted for Cu2+ and red-shifted for Hg2+) and color changes, and the color response of the sensory materials can be tuned for detection with the naked eye. Detection limits of sensor PM1 center dot HCl for Cu2+ and Hg2+ were estimated to be 2.0 x 10(-10) M and 2.0 x 10(-9) M, respectively. Fluorescence sensor PM2 center dot HCl also showed high sensitivity toward Cu2+ in aqueous media, and the detection limit was measured to be as low as 2.0 10(-10) M. Upon addition of Hg2+ to the PM2 center dot HCl aqueous solution, no significant changes of the fluorescence spectra were observed. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：157 / 165

页数：9

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