期刊
TALANTA
卷 78, 期 1, 页码 76-80出版社
ELSEVIER
DOI: 10.1016/j.talanta.2008.10.067
关键词
Electrochemiluminescent sensor; Glucose; Nickel phthalocyanine; Multi-walled carbon nanotubes; Luminol
资金
- National Nature Sciences Funding of China [20735002, 20575011, 20877019]
- Special Foundation for Young Scientists of Fujian Province, China [2008F3057]
- Science and Technology Developing Funding of Fuzhou University [2007-XQ-07]
A poly(nickel(II) tetrasulfophthalocyanine)/multi-walled carbon nanotubes composite modified electrode (polyNiTSPc/MWNTs) was fabricated by electropolymerization of NiTSPc on MWNTs-modified glassy carbon electrode (GCE). The modified electrode was found to be able to greatly improve the emission of luminol electrochemiluminescence (ECL) in a solution containing hydrogen peroxide. Glucose oxidase (GOD) was immobilized on the surface of polyNiTSPc/MWNTs modified GC electrode by Nafion to establish an ECL glucose sensor. Under the optimum conditions, the linear response range of glucose was 1.0 x 10(-6) to 1.0 x 10(-4) mol L-1 with a detection limit of 8.0 x 10(-1) mol L-1 (defined as the concentration that could be detected at the signal-to-noise ratio of 3). The ECL sensor showed an outstanding well reproducibility and long-term stability. The established method has been applied to determine the glucose concentrations in real serum samples with satisfactory results. (C) 2008 Elsevier B.V. All rights reserved.
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