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Reference type: Journal
Authors: Sun Y, Du HY, Lan YT, Wang WJ, Liang YJ, Feng CL, Yang M
Article Title: Preparation of hemoglobin (Hb) imprinted polymer by Hb catalyzed eATRP and its application in biosensor.
Publication date: 2016
Journal: Biosensors and Bioelectronics
Volume: 77
Page numbers: 894-900.
DOI: 10.1016/j.bios.2015.10.067
Alternative URL: http://www.sciencedirect.com/science/article/pii/S0956566315305303

Abstract: Molecularly imprinted polymer (MIP) was prepared on the surface of Au electrode by electrochemically mediated atom transfer radical polymerization (eATRP) with hemoglobin (Hb) both as catalyst and template molecule. Firstly, the condition for eATRP such as the potential, time and Hb concentration were selected and determined to be -0.51 V, 120 min and 20 mg/mL, respectively. Further, the electrode modified with MIP (MIP/Au) was carefully examined by cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and scanning electron microscope (SEM). Finally, the MIP/Au electrode was used as a biosensor and successfully applied for the determination of Hb by differential pulse voltammetry (DPV) measurement. The results of experiments showed that the proposed biosensor displayed a broader linear range and a lower detection limit for Hb determination when it was compared to those Hb sensors based on MIP. The linear range was from 1.0 x 10-10 to 1.0 x 101 mg/L with a detection limit of 7.8 x 10-11 mg/L (S/N=3.3). In a word, the work of this paper established a useful way for the preparation and application of biosensor based on protein imprinted polymers
Template and target information: protein, hemoglobin, Hb
Author keywords: hemoglobin, Electrochemically mediated atom transfer radical polymerization, molecularly imprinted polymer, biosensor

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