文献类型：期刊文献

英文题名：Silica-Coated Magnetite Nanoparticles Carrying a High-Density Polymer Brush Shell of Hydrophilic Polymer

作者：Cai, Yingying[1];Peng, Wentao[1];Demeshko, Serhiy[2];Tian, Jia[3];Vana, Philipp[1]

机构：[1]Georg August Univ Gottingen, Inst Phys Chem, Tammannstr 6, D-37077 Gottinge, Germany;[2]Georg August Univ Gottingen, Inst Anorgan Chem, Tammannstr 6, D-37077 Gottinge, Germany;[3]East China Univ Sci & Technol, Shanghai Key Lab Funct Mat Chem, Shanghai 200237, Peoples R China

年份：2018

卷号：39

期号：13

外文期刊名：MACROMOLECULAR RAPID COMMUNICATIONS

收录：;EI(收录号：20182805532997);WOS:【SCI-EXPANDED(收录号:WOS:000437690500008)】；

基金：Financial support was by the Deutsche Forschungsgemeinschaft (DFG, project No. VA226/10-1). The authors gratefully acknowledge the generous financial support by the Fonds der Chemischen Industrie (Ph.D. fellowship granted to W.P.).

语种：英文

外文关键词：magnetite; nanostructures; reversible addition-fragmentation chain transfer (RAFT); silica

摘要：Integrating the properties of magnetite nanoparticles (MNPs) and high-density polymer brushes in one structure requires sophisticated synthetic designs and effective chemical approaches. A simple and versatile strategy for the fabrication of hydrophilic-polymer-capped magnetite-core-silica-shell nanohybrids with well-defined structure employing reverse microemulsion technique and reversible addition-fragmentation chain transfer (RAFT) polymerization is presented. The high-density polymer brush allows precise patterning of the magnetic nanohybrids with a tunable interparticle distance ranging from 20 nm to 80 nm by controlling the polymer size. The high structural precision provides a near stand-alone state of the MNPs in the nanohybrids with effectively inhibited magnetic interaction, as shown by superconducting quantum interference device (SQUID) measurements.