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Issue 22, 2016
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Electrochemically-responsive magnetic nanoparticles for reversible protein adsorption

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Abstract

Electrochemical stimulus is a clean and simple choice of stimulating source in the field of stimuli-responsive materials. Herein, we report an electrochemically-responsive hybrid assembly of magnetic nanoparticles (Fe3O4@SiO2-PGMA-CD) and polyethylene glycol-Fc (PEG-Fc) based on the host–guest interaction between β-cyclodextrin and ferrocene groups. Through electrochemical control, the hydrophilic polymer chains can be reversibly linked to or dropped off from the surface of the magnetic nanoparticles. Thus, the hydrophobic property of the surface together with the protein adsorption ability of the magnetic nanoparticles can be conveniently adjusted by voltages applied. A reversible protein adsorption/release transition from this novel hybrid material has been realized, demonstrated by the bovine serum albumin adsorption experiment. Therefore, an elegant material is introduced to achieve electrochemically-controlled reversible magnetic separation of proteins.

Graphical abstract: Electrochemically-responsive magnetic nanoparticles for reversible protein adsorption

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Publication details

The article was received on 29 Jan 2016, accepted on 02 May 2016 and first published on 03 May 2016


Article type: Paper
DOI: 10.1039/C6TB00259E
Citation: J. Mater. Chem. B, 2016,4, 4009-4016
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    Electrochemically-responsive magnetic nanoparticles for reversible protein adsorption

    J. Guo, N. Wang, L. Peng, J. Wu, Q. Ye, A. Feng, Z. Wang, C. Zhang, X. Xing and J. Yuan, J. Mater. Chem. B, 2016, 4, 4009
    DOI: 10.1039/C6TB00259E

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