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Electrochemical Sensor for trans ‐Resveratrol Determination Based on Indium Tin Oxide Electrode Modified with Molecularly Imprinted Self‐Assembled Films
Author(s) -
Xiang Hai Yan,
Li Wei Guo
Publication year - 2009
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.200804488
Subject(s) - indium tin oxide , molecularly imprinted polymer , electrode , cyclic voltammetry , detection limit , differential pulse voltammetry , electrochemical gas sensor , electrochemistry , tin oxide , materials science , analytical chemistry (journal) , indium , oxide , chemistry , selectivity , chromatography , organic chemistry , catalysis , optoelectronics
A voltammetric sensor for sensitive and specific determination of trans ‐resveratrol (RES) were prepared based on immobilization of an RES‐imprinted film on the surface of functionalized Indium Tin Oxide (ITO) electrode, which was modified with γ‐methacyloxypropyl trimethoxysilane (γ‐MPS). Cyclic Voltammetry (CV) was presented to extract RES from the molecularly imprinted polymer film and RES were extracted rapidly and completely. The binding performance of the imprinted electrode with the template RES were investigated using differential pulse voltammetry (DPV). The results showed that the imprinted ITO film can give selective recognition to the template RES over that of structurally analogous molecules. A linear response to RES in the concentration range of 2.0×10 −6 M to 2.0×10 −5 M was observed with a correlation coefficient of 0.992, and the detection limit of the electrochemical sensor was 8.0×10 −7 M. Whereas, binding to the reference nonimprinted electrode, made in the same way but without the addition of template RES, there was almost no response to RES.