Multiwalled Carbon Nanotubes Incorporated with Dendrimer Encapsulated with Pt Nanoparticles: An Attractive Material for Sensitive Biosensors

作者：Huiyu Zhu, Yihua Zhu, Xiaoling Yang, Chunzhong Li · 发表于：Chemistry Letters · 年份：2006 · DOI：10.1246/cl.2006.326 · 被引用次数：26 · 研究领域：Electrochemical sensors and biosensors、Conducting polymers and applications、Advanced biosensing and bioanalysis techniques

Abstract Dendrimer encapsulated Pt nanoparticles (Pt-DENs) with a diameter of 2–3 nm were used in combination with multiwalled carbon nanotubes (MWCNTs) for fabricating electrochemical sensors with remarkably improved sensitivity toward glucose. TEM images illustrated the deposition of Pt-DENs on carbon nanotubes whereas cyclic voltammetry (CV) confirmed an electrical contact through MWCNTs between Pt-DENs and electrode. And the MWCNTs incorporated with Pt-DENs modifying Pt/GOx elelctrode-based biosensors response more sensitively to glucose than the electrode modified with MWCNTs alone reported by others. The response time and detection limit of this biosensor was determined to be 5 s, and 2.5 μM, respectively.