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Interfacial aspects of polymer brushes prepared on conductive substrates by aryl diazonium salt surface‐initiated ATRP
Author(s) -
Nguyen Minh Ngoc,
Matrab Tarik,
Badre Chantal,
Turmine Mireille,
Chehimi Mohamed M.
Publication year - 2008
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/sia.2687
Subject(s) - atom transfer radical polymerization , aryl , polymer chemistry , methacrylate , diazonium compounds , styrene , polymer , grafting , salt (chemistry) , chemistry , polymerization , side chain , x ray photoelectron spectroscopy , glassy carbon , electrochemistry , surface modification , materials science , alkyl , organic chemistry , chemical engineering , copolymer , electrode , cyclic voltammetry , engineering
This article describes the use of aryl diazonium salts to attach halogenated functional groups that initiate atom transfer radical polymerization (ATRP) at the surface of conductive substrates. The interest of this procedure lies in the fact that aryl diazonium salts permit the grafting of high‐density initiators within a few minutes of electrochemical surface treatment, and subsequently promote the growth of very compact polymer chains. Several brominated aryl groups were tested for surface‐initiating ATRP of styrene and methacrylates. The chemical structure of the polymer brushes was characterized by high‐resolution XPS. Particularly, it is shown that grafting of poly(tert‐butyl methacrylate), PtBMA, from the surface of glassy carbon plates followed by hydrolysis resulted in carboxylated, tethered chains that were characterized in terms of hydrophilicity and propensity to uptake silver cations. Copyright © 2008 John Wiley & Sons, Ltd.