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Issue 26, 2012
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Grafting poly(ionic liquid) brushes for anti-bacterial and anti-biofouling applications

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Abstract

Polymer brushes provide an ideal platform for studying biofouling and screening anti-biofouling materials. In the present work, high-density poly(ionic liquid) brushes based on imidazolium salts were successfully grafted to surfaces via surface-initiated ring-opening metathesis polymerizations from catecholic initiator and their anti-microbial activity was evaluated. Very uniform poly(ionic liquid) coatings with thickness up to 80 nm were obtained on TiO2. Various characterization techniques including infrared spectroscopy, X-ray photoelectron spectroscopy, thermogravimetric analysis and transmission electron microscopy were used to characterize poly(ionic liquid) brushes modified TiO2 nanomaterials. Subsequently, the anti-bacterial and anti-biofouling properties of poly(ionic liquid) brushes were evaluated. It was found that poly(ionic liquid) brushes can obviously resist adhesion of Chlorella spores and the counter-anions have a key impact on the anti-microbial property. The hexafluorophosphate anion poly(ionic liquid) coated TiO2 nanomaterials have excellent anti-bacterial properties compared to pristine TiO2 nanoparticles against both E. coli and S. aureus.

Graphical abstract: Grafting poly(ionic liquid) brushes for anti-bacterial and anti-biofouling applications

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Publication details

The article was received on 12 Mar 2012, accepted on 30 Apr 2012 and first published on 30 Apr 2012


Article type: Paper
DOI: 10.1039/C2JM31527K
Citation: J. Mater. Chem., 2012,22, 13123-13131
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    Grafting poly(ionic liquid) brushes for anti-bacterial and anti-biofouling applications

    Q. Ye, T. Gao, F. Wan, B. Yu, X. Pei, F. Zhou and Q. Xue, J. Mater. Chem., 2012, 22, 13123
    DOI: 10.1039/C2JM31527K

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