期刊
BIOSENSORS & BIOELECTRONICS
卷 23, 期 3, 页码 438-443出版社
ELSEVIER ADVANCED TECHNOLOGY
DOI: 10.1016/j.bios.2007.06.010
关键词
carbon nanotubes; glucose oxidase; ionic liquids; bionanocomposite; electrochemistry
For their biocompatibility and potential bionanoelectronic applications, integration of carbon nanotubes (CNTs) with biomolecules such as redox enzyme is highly anticipated. Therein, CNTs are expected to act not only as an electron transfer promoter, but also as immobilizing substrate for biomolecules. In this report, a novel method for immobilization of biomolecules on CNTs was proposed based on ionic interaction, which is of universality and widespread use in biological system. As illustrated, glucose oxidase (GOD) and single-walled carbon nanotubes (SWNTs) were integrated into a unitary bionanocomposite by means of ionic liquid-like unit on functionalized SWNTs. The resulted bionanocomposite illustrated better redox response of immobilized GOD in comparison of that prepared by weak physical absorption without ionic interaction. As a potential application of concept, the electrochemical detection of glucose was exemplified based on this novel bionanocomposite. (c) 2007 Elsevier B.V. All rights reserved.
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