Fluorescence quenching of a rhodamine derivative: Selectively sensing Cu2+ in acidic aqueous media

被引：54

作者：

Ding, Jihua ^{[2
]}

Yuan, Lidi ^{[3
]}

Gao, Ling ^{[4
]}

Chen, Jingwen ^{[1
]}

机构：

[1] Yancheng Inst Technol, Sch Chem & Biol Engn, Key Lab Adv Technol Environm Protect Jiangsu Prov, Yancheng 224051, Peoples R China

[2] Changzhou Univ, Sch Petrochem Engn, Changzhou 213164, Peoples R China

[3] Jiangsu Univ, Sch Chem & Chem Engn, Zhenjiang 212013, Peoples R China

[4] Yancheng Entry Exit Inspect & Quarantine Bur, Yancheng 224001, Peoples R China

来源：

JOURNAL OF LUMINESCENCE | 2012年 / 132卷 / 08期

关键词：

Acidic media; Chemosensor; Copper(II); Fluorescence quenching; Rhodamine derivative; STERN-VOLMER PLOTS; LIVING CELLS; COPPER-ION; SENSOR; CHEMOSENSOR; STRATEGY; DESIGN; INDOLE; PROBE;

D O I：

10.1016/j.jlumin.2012.03.039

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A new rhodamine derivative (RhB-Im) was synthesized as an "on-off" chemosensor for Cu2+ in an acidic aqueous solution. RhB-Im exhibited chemically reversible and highly selective and sensitive fluorescence response toward Cu2+ in aqueous acetate-buffer/DMF solution (pH 3.6) over other competitive metal ions. Upon addition of Cu2+, RhB-Im displayed remarkable fluorescence quenching accompanied by a clear color change from pink to red. Based on the analysis of Stern-Volmer plots, a static quenching mode was proposed to be primarily responsible for the fluorescence quenching event when the concentration of Cu2+ was low, but, the energy- and electron-transfer processes cannot be ruled out. (c) 2012 Elsevier B.V. All rights reserved.

引用

页码：1987 / 1993

页数：7

共 47 条

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