Polymerization Initiated by Inherent Free Radicals on Nanoparticle Surfaces: A Simple Method of Obtaining Ultrastable (ZnO)Polymer Core–Shell Nanoparticles with Strong Blue Fluorescence

Authors


  • This work was supported by the National Natural Science Foundation of China and the Natural Science Foundation of Shanghai. The authors thank Prof. Chen Jie-Sheng of Jilin University for his kind help with HRTEM measurements. Supporting Information is available online from Wiley InterScience or from the author.

Abstract

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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.

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