4.7 Article

A sensitive choline biosensor with supramolecular architecture

期刊

TALANTA
卷 82, 期 2, 页码 483-487

出版社

ELSEVIER SCIENCE BV
DOI: 10.1016/j.talanta.2010.04.061

关键词

Choline biosensor; Supramolecular complex; beta-Cyclodextrin; Platinum nanoparticles; Square wave voltammetry

资金

  1. National Natural Science Foundation of China [90713022]
  2. National Key Basic Research Development Project of China [2007CB714500]
  3. Chinese Academy of Sciences [KJCX2-YW-H11]

向作者/读者索取更多资源

A sensitive biosensor with supramolecular architecture was designed and implemented here to detect choline. Choline oxidase and horseradish peroxidase were assembled onto the polymer of thiolated beta-cyclodextrin and platinum nanoparticles modified gold electrode through 1-adamantane carboxylic acid coupling. Square wave voltammetry showed that the reduction currents at 0.38 mV had a linear relationship with the logarithms of choline concentrations in the range of 10(-9)-10(-2) M. and the detection limit was down to 0.1 nM. Such biosensor also exhibited excellent selectivity, reproducibility and stability. (C) 2010 Elsevier B.V. All rights reserved.

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