POLY(3,4-ETHYLENEDIOXYTHIOPHENE METHANOL)/ASCORBATE OXIDASE/NAFION-SINGLE-WALLED CARBON NANOTUBES BIOSENSOR FOR VOLTAMMETRIC DETECTION OF VITAMIN C

Yang-ping Wen; Dong Li; Yao Lu; Hao-hua He; Jing-kun Xu; Xue-min Duan; Ming Liu

doi:10.1007/s10118-012-1140-4

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POLY(3,4-ETHYLENEDIOXYTHIOPHENE METHANOL)/ASCORBATE OXIDASE/NAFION-SINGLE-WALLED CARBON NANOTUBES BIOSENSOR FOR VOLTAMMETRIC DETECTION OF VITAMIN C

PAPER | Updated：2023-01-03

- POLY(3,4-ETHYLENEDIOXYTHIOPHENE METHANOL)/ASCORBATE OXIDASE/NAFION-SINGLE-WALLED CARBON NANOTUBES BIOSENSOR FOR VOLTAMMETRIC DETECTION OF VITAMIN C
- Chinese Journal of Polymer Science Vol. 30, Issue 3, Pages: 460-469(2012)
- Affiliations：
  
  a.Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, and Key Laboratory of Physiology, Ecology and Cultivation of Double Cropping Rice, Ministry of Agriculture, Jiangxi Agricultural University, Nanchang 330045, China
  b.Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang 330013, China
  c.School of Pharmacy, Jiangxi Science & Technology Normal University, Nanchang 330013, China
- Author bio：
  
  **Hao-hua He (贺浩华), E-mail: hhhua64@163.com
  Jing-kun Xu (徐景坤), E-mail: xujingkun@tsinghua.org.cn
- Funds：
- DOI：10.1007/s10118-012-1140-4
  CLC：
- Received：01 August 2011，
  
  Revised：2011-10-17，
  
  Accepted：19 October 2011，
  
  Published：2012-05
- Accepted：
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Yang-ping Wen, Dong Li, Yao Lu, et al. POLY(3,4-ETHYLENEDIOXYTHIOPHENE METHANOL)/ASCORBATE OXIDASE/NAFION-SINGLE-WALLED CARBON NANOTUBES BIOSENSOR FOR VOLTAMMETRIC DETECTION OF VITAMIN C[J]. Chinese Journal of Polymer Science, 2012, 30(3): 460-469.
DOI：

Yang-ping Wen, Dong Li, Yao Lu, et al. POLY(3,4-ETHYLENEDIOXYTHIOPHENE METHANOL)/ASCORBATE OXIDASE/NAFION-SINGLE-WALLED CARBON NANOTUBES BIOSENSOR FOR VOLTAMMETRIC DETECTION OF VITAMIN C[J]. Chinese Journal of Polymer Science, 2012, 30(3): 460-469. DOI： 10.1007/s10118-012-1140-4.

摘要

Abstract

Vitamin C (VC) content in commercial juices was voltammetrically determined using a highly selective and sensitive poly(3

4-ethylenedioxythiophene methanol)/ascorbate oxidase/Nafion-single-walled carbon nanotubes (PEDOTM/AO/Nafion-SWCNT) biosensor. The biocompatible PEDOTM matrix was prepared facilely by the one-step electrochemical deposition technique in lithium perchlorate aqueous solutions. AO was dip-coated on the surface of the biocompatible PEDOTM matrix. The mixture of Nafion-SWCNT was dip-cast onto the surface of AO layer when it was obtained by blending Nafion solution and SWCNT dispersion together in a volume ratio of 1:1. The prepared PEDOTM/AO/Nafion-SWCNT biosensor was used for the voltammetric determination of VC

which exhibited the good linear range (4.0 × 10

-5

-3 × 10

-3

mol/L)

low detection limit (13 μmol/L)

pronounced sensitivity (1.4072 mA (mmol/L)

-1

-2

)

high bioaffinity (low apparent Michaelis-Menten constant)

good stability (good repeatability)

high specificity (good anti-interference ability) coupled with the good reliability and feasibility (the determination of VC in commercial juices). Meanwhile

the good aqueous solubility and the low onset oxidation potential of EDOTM will be more beneficial to the application in biosensor field compared to 3

4-ethylenedioxythiophene. Moreover

the good biocompatibility of PEDOTM matrix and high selectivity of Nafion-SWCNT films also provide a promising platform for the development of biosensing devices.

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Related Institution

Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, Key Laboratory of Physiology, Ecology and Cultivation of Double Cropping Rice, Ministry of Agriculture, Jiangxi Agricultural University

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Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science & Technology Normal University

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