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Polymerization Initiated by Inherent Free Radicals on Nanoparticle Surfaces: A Simple Method of Obtaining Ultrastable (ZnO)Polymer Core–Shell Nanoparticles with Strong Blue Fluorescence
Author(s) -
Xiong H.M.,
Wang Z.D.,
Xia Y.Y.
Publication year - 2006
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200501899
Subject(s) - nanoparticle , materials science , fluorescence , polymerization , polymer , monomer , radical , luminescence , nanotechnology , core (optical fiber) , quantum yield , photochemistry , chemical engineering , organic chemistry , chemistry , optoelectronics , optics , composite material , physics , engineering
Strong blue fluorescence —with a quantum yield over 80 % (see figure)—of ultrastable (ZnO)polymer core–shell nanoparticles is suggested to arise by a luminescence mechanism different from that for conventional ZnO nanoparticles. The stable particles are produced by methacrylic‐group‐modified ZnO nanoparticles reacting with liquid monomers, the polymerization being initiated by free radicals pre‐existing on the ZnO nanoparticle surfaces.