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author:

Zhao, F. (Zhao, F..) [1] | Li, X. (Li, X..) [2] | Xu, W. (Xu, W..) [3] | Zhang, W. (Zhang, W..) [4] | Ying, X. (Ying, X..) [5]

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Scopus

Abstract:

An electrochemical sensor for L-tryptophan based on a molecularly imprinted polymer was developed. The sensing film was prepared by the co-electropolymerization of o-phenylenediamine and hydroquinone on a gold electrode in the presence of L-tryptophan as the template. The performance of the L-tryptophan sensor was characterized by cyclic voltammetry, differential pulse voltammetry, and alternating current impedance. Under the optimal experimental conditions, the relative current change was linear to the concentration of L-tryptophan in the range of 1.0 × 10-8 to 1.0 × 10-6 mol/L and a detection limit of 0.50 × 10-8 mol/L was obtained. The sensor showed high sensitivity and selectivity for L-tryptophan. The imprinting factor was 3.58 and selectivity factors of L-tryptophan compared to analogs were larger than 2. The sensor also demonstrated good resistance to acidic, basic, and organic environments. © 2014 Copyright Taylor & Francis Group, LLC.

Keyword:

Electrochemical sensor; Electropolymerization; Hydroquinone; L-tryptophan; Molecularly imprinted film; O-phenylenediamine

Community:

  • [ 1 ] [Zhao, F.]College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou, China
  • [ 2 ] [Li, X.]College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou, China
  • [ 3 ] [Xu, W.]College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou, China
  • [ 4 ] [Zhang, W.]College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou, China
  • [ 5 ] [Ying, X.]College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou, China

Reprint 's Address:

  • [Li, X.]College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou 350108, China

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Source :

Analytical Letters

ISSN: 0003-2719

Year: 2014

Issue: 10

Volume: 47

Page: 1712-1725

1 . 0 3

JCR@2014

1 . 6 0 0

JCR@2023

ESI HC Threshold:268

JCR Journal Grade:4

CAS Journal Grade:4

Cited Count:

WoS CC Cited Count: 0

SCOPUS Cited Count: 23

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 2

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