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Issue 19, 2014
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Organophosphonic acids as viable linkers for the covalent attachment of polyelectrolyte brushes on silica and mica surfaces

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Abstract

We report the first successful preparation of polyelectrolyte brushes using an ATRP initiator that was covalently grafted to silica and mica substrates via an organophosphonic acid. Covalent attachment of the initiator to silica and mica and the subsequent synthesis of polyacrylic acid (PAA) and poly(sulfopropyl methacrylic acid) brushes by water mediated-ATRP were confirmed by ATR-FTIR, ellipsometry, AFM, and contact angle measurements. The initiator–substrate bond was robust and could resist a large range of pH in the absence of salt. Interactions between PAA brushes anchored to mica via the organophosphonic acid initiator were investigated using a surface forces apparatus. The results confirmed the robustness of the initiator–mica bond as the brushes could resist shearing and compression under relatively high applied loads.

Graphical abstract: Organophosphonic acids as viable linkers for the covalent attachment of polyelectrolyte brushes on silica and mica surfaces

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Publication details

The article was received on 07 Apr 2014, accepted on 02 Jun 2014 and first published on 03 Jun 2014


Article type: Paper
DOI: 10.1039/C4PY00492B
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Citation: Polym. Chem., 2014,5, 5740-5750

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    Organophosphonic acids as viable linkers for the covalent attachment of polyelectrolyte brushes on silica and mica surfaces

    O. Borozenko, V. Machado, W. G. Skene and S. Giasson, Polym. Chem., 2014, 5, 5740
    DOI: 10.1039/C4PY00492B

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