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Fe₃O₄@rGO doped molecularly imprinted polymer membrane based on magnetic field directed self-assembly for the determination of amaranth.
Talanta. 2014 Jun; 123:101-8.T

Abstract

Based on magnetic field directed self-assembly (MDSA) of Fe3O4@rGO composites, a novel magnetic molecularly imprinted electrochemical sensor (MIES) was fabricated and developed for the determination of the azo dye amaranth. Fe3O4@rGO composites were obtained by a one-step approach involving the initial intercalating of iron ions between the graphene oxide layers via the electrostatic interaction, followed by the reduction with hydrazine hydrate to deposit Fe3O4 nanoparticles onto the reduced oxide graphene nanosheets. In molecular imprinting, the complex including the function monomer of aniline, the template of amaranth and Fe3O4@rGO was pre-assembled through π-π stacking and hydrogen bonding interactions, and then was self-assembled on the surface of magnetic glassy carbon electrode (MGCE) with the help of magnetic field induction before electropolymerization. The structures and morphologies of Fe3O4@rGO and the doped molecularly imprinted polymers (MIPs) were investigated by Fourier transform infrared spectrometer (FT-IR), Raman spectra and scanning electron microscope (SEM). Besides, the characterization by differential pulse voltammetry (DPV) showed that Fe3O4@rGO composites promoted the electrical conductivity of the imprinted sensors when doped into the MIPs. The adsorption isotherms and adsorption kinetics were employed to evaluate the performances of MIES. The detection of amaranth was achieved via the redox probe K3[Fe(CN)6] by blocking the imprinted cavities, which avoided the interferences of oxidation products and analogs of amaranth. Furthermore, the prepared MIES exhibited good sensitivity, selectivity, reproducibility and efficiency for detecting amaranth in fruit drinks. The average recoveries were 93.15-100.81% with the RSD <3.0%.

Authors+Show Affiliations

School of Pharmacy, Nanjing Medical University, Nanjing 211166, PR China.School of Pharmacy, Nanjing Medical University, Nanjing 211166, PR China.School of Pharmacy, Nanjing Medical University, Nanjing 211166, PR China.School of Pharmacy, Nanjing Medical University, Nanjing 211166, PR China.School of Pharmacy, Nanjing Medical University, Nanjing 211166, PR China. Electronic address: xueminzhou001_001@hotmail.com.School of Pharmacy, Nanjing Medical University, Nanjing 211166, PR China. Electronic address: huijun_jiang2006@hotmail.com.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

24725870

Citation

Han, Qing, et al. "Fe₃O₄@rGO Doped Molecularly Imprinted Polymer Membrane Based On Magnetic Field Directed Self-assembly for the Determination of Amaranth." Talanta, vol. 123, 2014, pp. 101-8.
Han Q, Wang X, Yang Z, et al. Fe₃O₄@rGO doped molecularly imprinted polymer membrane based on magnetic field directed self-assembly for the determination of amaranth. Talanta. 2014;123:101-8.
Han, Q., Wang, X., Yang, Z., Zhu, W., Zhou, X., & Jiang, H. (2014). Fe₃O₄@rGO doped molecularly imprinted polymer membrane based on magnetic field directed self-assembly for the determination of amaranth. Talanta, 123, 101-8. https://doi.org/10.1016/j.talanta.2014.01.060
Han Q, et al. Fe₃O₄@rGO Doped Molecularly Imprinted Polymer Membrane Based On Magnetic Field Directed Self-assembly for the Determination of Amaranth. Talanta. 2014;123:101-8. PubMed PMID: 24725870.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Fe₃O₄@rGO doped molecularly imprinted polymer membrane based on magnetic field directed self-assembly for the determination of amaranth. AU - Han,Qing, AU - Wang,Xi, AU - Yang,Zaiyue, AU - Zhu,Wanying, AU - Zhou,Xuemin, AU - Jiang,Huijun, Y1 - 2014/02/06/ PY - 2013/11/21/received PY - 2014/01/24/revised PY - 2014/01/25/accepted PY - 2014/4/15/entrez PY - 2014/4/15/pubmed PY - 2015/4/22/medline KW - Amaranth KW - Directed self-assembly KW - Electrochemical sensor KW - Fe(3)O(4)@rGO KW - Molecularly imprinted polymer SP - 101 EP - 8 JF - Talanta JO - Talanta VL - 123 N2 - Based on magnetic field directed self-assembly (MDSA) of Fe3O4@rGO composites, a novel magnetic molecularly imprinted electrochemical sensor (MIES) was fabricated and developed for the determination of the azo dye amaranth. Fe3O4@rGO composites were obtained by a one-step approach involving the initial intercalating of iron ions between the graphene oxide layers via the electrostatic interaction, followed by the reduction with hydrazine hydrate to deposit Fe3O4 nanoparticles onto the reduced oxide graphene nanosheets. In molecular imprinting, the complex including the function monomer of aniline, the template of amaranth and Fe3O4@rGO was pre-assembled through π-π stacking and hydrogen bonding interactions, and then was self-assembled on the surface of magnetic glassy carbon electrode (MGCE) with the help of magnetic field induction before electropolymerization. The structures and morphologies of Fe3O4@rGO and the doped molecularly imprinted polymers (MIPs) were investigated by Fourier transform infrared spectrometer (FT-IR), Raman spectra and scanning electron microscope (SEM). Besides, the characterization by differential pulse voltammetry (DPV) showed that Fe3O4@rGO composites promoted the electrical conductivity of the imprinted sensors when doped into the MIPs. The adsorption isotherms and adsorption kinetics were employed to evaluate the performances of MIES. The detection of amaranth was achieved via the redox probe K3[Fe(CN)6] by blocking the imprinted cavities, which avoided the interferences of oxidation products and analogs of amaranth. Furthermore, the prepared MIES exhibited good sensitivity, selectivity, reproducibility and efficiency for detecting amaranth in fruit drinks. The average recoveries were 93.15-100.81% with the RSD <3.0%. SN - 1873-3573 UR - https://www.unboundmedicine.com/medline/citation/24725870/Fe₃O₄@rGO_doped_molecularly_imprinted_polymer_membrane_based_on_magnetic_field_directed_self_assembly_for_the_determination_of_amaranth_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0039-9140(14)00071-X DB - PRIME DP - Unbound Medicine ER -