Journal
MACROMOLECULAR RAPID COMMUNICATIONS
Volume 24, Issue 18, Pages 1074-1078Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/marc.200300035
Keywords
graft density; hybrid inorganic-organic material; nanolayers; radical polymerization; silica particle
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A series of organic-inorganic hybrid particles were synthesized by a self-assembled layer of different initiators, immobilized on silica particles and used for controlled radical polymerization. We use three different initiator systems for atom-transfer radical polymerization (ATRP), unimolecular nitroxide mediated polymerization (NMP), and bimolecular NMP, for the development of the hybrid inorganic/organic particles. After preliminary qualitative characterization by X-ray spectroscopy (XPS) and Fourier-transformed infrared (FT-IR) measurements, the hybrid nanoparticles were studied by thermogravimetric analysis (TGA) to determine and discuss the initiator graft density in terms of steric hindrance.
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