Carbon nanotube/gold nanoparticles/polyethylenimine-functionalized ionic liquid thin film composites for glucose biosensing.
作者： Fei Jia , Changsheng Shan , Fenghua Li , Li Niu
DOI: 10.1016/J.BIOS.2008.07.057
关键词:
摘要: Abstract A novel glucose biosensor based on immobilization of oxidase (GOD) in thin films polyethylenimine-functionalized ionic liquid (PFIL), containing a mixture carbon nanotubes (CNT) and gold nanoparticles (AuNPs) deposited glassy electrodes, was developed. Direct electrochemistry the film observed, with linear response up to 12 mM. The PFIL-stabilized had diameter 2.4 ± 0.8 nm exhibited favorable stability (stored even over one month invisible change UV–vis spectroscopic measurements). In addition, CNT were also well dispersed PFIL matrix, then, resulting CNT/AuNPs/PFIL composites showed high electrocatalytic activity toward reduction hydrogen peroxide oxygen. Here, PFIL, due its conductivity, good solubility CNT, nanoparticles, played an important role constructing stable CNT/AuNPs/PFIL/GOD composites. And biocompatibility offered friendly environment for biomolecules.
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