期刊
LANGMUIR
卷 29, 期 37, 页码 11547-11553出版社
AMER CHEMICAL SOC
DOI: 10.1021/la401990d
关键词
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资金
- South Carolina Smart State Centers of Economic Excellence program
A critical challenge in nanoparticle functionalization has been the preparation of polymer-grafted asymmetric (Janus) nanoparticles (diameter < 100 nm). We describe a robust and cyclic method involving a reversible click reaction and grafting to strategies to synthesize such nanoparticles. Mechanochemistry was used in a protection deprotection process to separate nanoparticles cleanly that were anchored to larger particles, and the recovered azide-functionalized larger particles could be recycled as face-blocking moieties. With this combination of strategies, we prepared 15 nm silica nanoparticles that were partially functionalized with poly(methyl methacrylate). Additionally, the unique self-assembly behaviors of the resultant Janus nanoparticles were investigated in different solvents at different concentrations.
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