An electrochemiluminescence sensor based on a Ru(bpy)32+-silica-chitosan/nanogold composite film

被引:10
作者
Cai, Zhi-min [1 ,2 ,3 ]
Wu, Yan-fang [1 ,2 ,3 ]
Huang, Yun-he [1 ,2 ,3 ]
Li, Qiu-ping [5 ]
Chen, Xiao-mei [4 ]
Chen, Xi [1 ,2 ,3 ]
机构
[1] Xiamen Univ, Dept Chem, Xiamen 361005, Peoples R China
[2] Xiamen Univ, Key Lab Analyt Sci, Coll Chem & Chem Engn, Xiamen 361005, Peoples R China
[3] Xiamen Univ, State Key Lab Marine Environm Sci, Xiamen 361005, Peoples R China
[4] Xiamen Huaxia Vocat Coll, Testing Lab Food & Drug Safety, Xiamen 361021, Peoples R China
[5] Jiamusi Univ, Dept Chem, Coll Pharm, Jiamusi 154007, Peoples R China
关键词
Electrochemiluminescence; Chitosan; Silica nanoparticles; Tris(2,2 '-bipyridyl)ruthenium(II); ELECTROGENERATED CHEMILUMINESCENCE SENSORS; DOPED SILICA NANOPARTICLES; ELECTRODE; TRIS(2,2'-BIPYRIDINE)RUTHENIUM(II); SEMICONDUCTOR; EMISSION; ETHANOL;
D O I
10.1016/j.talanta.2012.03.046
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
Chitosan, a cationic polysaccharide containing amino and hydroxyl groups, was used to fabricate an electrochemiluminescence (ECL) sensor. In the sensor construction, a glassy carbon electrode (GCE) was first coated by a chitosan film which embedded gold nanoparticles, and then the film was modified by introducing carboxyl groups on the surface, which were used to immobilize tris(2,2'-bipyridyl)ruthenium(II) doped amino-functional silica nanoparticles (NH2-RuSiNPs) through amido links. The successful modification was confirmed by scanning electronic microscopy and cyclic voltammetry. A binding model between the chirosan/nanogold composite film and NH2-RuSiNPs was also proposed, in which the amido link was the dominant bonding, accompanied with hydrogen bond interaction. ECL studies revealed that the sensor had very good response to different concentrations of 2-(dibutylamino) ethanol. This sensor was also applied in methamphetamine determination. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码:356 / 360
页数:5
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