Amperometric biosensor based on carbon nanotubes coated with polyaniline/dendrimer-encapsulated Pt nanoparticles for glucose detection

被引：59

作者：

Xu, Lihuan ^{[1
]}

Zhu, Yihua ^{[1
]}

Yang, Xiaoling ^{[1
]}

Li, Chunzhong ^{[1
]}

机构：

[1] E China Univ Sci & Technol, Key Lab Ultrafine Mat, Minist Educ, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China

来源：

MATERIALS SCIENCE & ENGINEERING C-BIOMIMETIC AND SUPRAMOLECULAR SYSTEMS | 2009年 / 29卷 / 04期

基金：

中国国家自然科学基金;

关键词：

Carbon nanotubes; Polyaniline; Glucose oxidase; Dendrimer-encapsulated nanoparticles; Biosensor; GOLD NANOPARTICLES; MODIFIED ELECTRODE; PLATINUM; OXIDASE;

D O I：

10.1016/j.msec.2008.10.031

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A novel amperometric glucose biosensor based on the nanocomposites of multi-wall carbon nanotubes (CNT) coated with polyaniline (PANI) and dendrimer-encapsulated Pt nanoparticles (Pt-DENs) is prepared. CNT coated with protonated PANI is in situ synthesized and Pt-DENs is absorbed on PANI/CNT composite surface by self-assembly method. Then Glucose oxidase (GOx) is crosslink-immobilizated onto Pt-DENs/PANI/CNT composite film. The results show that the fabricated GOx/Pt-DENs/PANI/CNT electrode exhibits excellent response performance to glucose, such as low detection limit (0.5 mu M), wide linear range (1 mu M-12 mM), short response time (about 5 s), high sensitivity (42.0 mu A mM(-1) cm(-2)) and stability (83% remains after 3 weeks). (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：1306 / 1310

页数：5

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