A colorimetric sensor for Cu2+ in aqueous solution based on metal ion-induced deprotonation: deprotonation/protonation mediated by Cu2+-ligand interactions

被引：74

作者：

Huang, Junhai ^{[1
]}

Xu, Yufang ^{[1
]}

Qian, Xuhong ^{[1
]}

机构：

[1] E China Univ Sci & Technol, Sch Pharm, Shang Hai Key Lab Chem Biol, Shanghai 200237, Peoples R China

来源：

DALTON TRANSACTIONS | 2009年 / 10期

基金：

中国国家自然科学基金; 国家高技术研究发展计划(863计划);

关键词：

PHOTOINDUCED ELECTRON-TRANSFER; RATIOMETRIC FLUORESCENT CHEMOSENSOR; LARGE RED-SHIFT; 1,8-NAPHTHALIMIDE UNITS; FLUORIDE; RECOGNITION; COMPLEXES; 4-AMINO-1,8-NAPHTHALIMIDE; ENHANCEMENT; RECEPTORS;

D O I：

10.1039/b816999c

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A Cu2+-specific colorimetric sensor 3 of a 1,8-naphthalimide chromophore integrated with a 2-aminodiphenylamine (2-adpa)-based receptor was designed and synthesized. Sensor 3 had high selectivity and sensitivity for Cu2+ in neutral aqueous buffer solution. The analytical detection limit (ADL) was 3.0 x 10(-7) M. Based on the Cu2+-induced deprotonation of the diarylamino "NH" moiety, the coordination mode was proposed with 1: 1 stoichiometry between 3 and Cu2+. These results opened up possibilities for the construction of novel colorimetric sensors with a red-shift absorption in a D-pi-A system.

引用

页码：1761 / 1766

页数：6

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