Surface Polymerization of Hydrophilic Methacrylates from Ultrafine Silica Sols in Protic Media at Ambient Temperature: A Novel Approach to Surface Functionalization Using a Polyelectrolytic Macroinitiator

A convenient one‐pot synthesis of polymer‐grafted nano‐sized silica particles using atom transfer radical polymerization (see Figure) is described. Physical adsorption of a cationic macroinitiator allows polymerization of a range of hydrophilic methacrylates. A high degree of coverage of the silica...

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Published inAdvanced materials (Weinheim) Vol. 15; no. 18; pp. 1558 - 1562
Main Authors Chen, X., Armes, S.P.
Format Journal Article
LanguageEnglish
Published Weinheim WILEY-VCH Verlag 16.09.2003
WILEY‐VCH Verlag
Subjects
Biocompatible materials
Silica
Silica, sols
sols
Surface functionalization
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Summary:A convenient one‐pot synthesis of polymer‐grafted nano‐sized silica particles using atom transfer radical polymerization (see Figure) is described. Physical adsorption of a cationic macroinitiator allows polymerization of a range of hydrophilic methacrylates. A high degree of coverage of the silica sol particles by the grafted polymer chains was indicated.
Bibliography:This work was supported by the EPSRC (GR/R19229). Merck KGaA is thanked for the kind donation of the near-monodisperse 100 nm silica sol (120 nm diameter by dynamic light scattering). Dr. R. Narain is thanked for the synthesis of the GAMA monomer. Prof. J. F. Watts from the University of Surrey (UK) is thanked for his assistance with the XPS measurements.
ArticleID:ADMA200305067
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This work was supported by the EPSRC (GR/R19229). Merck KGaA is thanked for the kind donation of the near‐monodisperse 100 nm silica sol (120 nm diameter by dynamic light scattering). Dr. R. Narain is thanked for the synthesis of the GAMA monomer. Prof. J. F. Watts from the University of Surrey (UK) is thanked for his assistance with the XPS measurements.
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ISSN:0935-9648
1521-4095
DOI:10.1002/adma.200305067