Facile and controllable one-step fabrication of molecularly imprinted polymer membrane by magnetic field directed self-assembly for electrochemical sensing of glutathione

Analytica Chimica Acta
Wanying ZhuXuemin Zhou

Abstract

Based on magnetic field directed self-assembly (MDSA) of the ternary Fe3O4@PANI/rGO nanocomposites, a facile and controllable molecularly imprinted electrochemical sensor (MIES) was fabricated through a one-step approach for detection of glutathione (GSH). The ternary Fe3O4@PANI/rGO nanocomposites were obtained by chemical oxidative polymerization and intercalation of Fe3O4@PANI into the graphene oxide layers via π-π stacking interaction, followed by reduction of graphene oxide in the presence of hydrazine hydrate. In molecular imprinting process, the pre-polymers, including GSH as template molecule, Fe3O4@PANI/rGO nanocomposites as functional monomers and pyrrole as both cross-linker and co-monomer, was assembled through N-H hydrogen bonds and the electrostatic interaction, and then was rapidly oriented onto the surface of MGCE under the magnetic field induction. Subsequently, the electrochemical GSH sensor was formed by electropolymerization. In this work, the ternary Fe3O4@PANI/rGO nanocomposites could not only provide available functionalized sites in the matrix to form hydrogen bond and electrostatic interaction with GSH, but also afford a promoting network for electron transfer. Moreover, the biomimetic sensing membrane c...Continue Reading

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Citations

Feb 7, 2016·Journal of Colloid and Interface Science·Xiaoxu LiXuemin Zhou
Apr 14, 2018·Analytical and Bioanalytical Chemistry·Shuyao HuangGangfeng Ouyang
Jul 29, 2017·Analytical and Bioanalytical Chemistry·Cecilia RossettiLéon Reubsaet
Jun 16, 2019·Applied Biochemistry and Biotechnology·Nazia AsgharUsman Latif
Jul 6, 2018·Mikrochimica Acta·Jaise Mariya GeorgeBeena Mathew
Apr 6, 2021·Advances in Colloid and Interface Science·Ashis TripathyFilipe Samuel Silva
Jul 25, 2019·ACS Applied Materials & Interfaces·Shengmei ZhuGuangfeng Wang

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