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Synthesis of cationic hyperbranched multiarm copolymer and its application in self-reducing and stabilizing gold nanoparticles
来源:周永丰教授个人网站 发布日期:2015-03-09
作者:Zhai, S.; Hong, H. Y.; Zhou, Y. F.*; Yan, D. Y.*
关键字:gold nanoparticles, hyperbranched polymers, self-reduction, stabilization
论文来源:期刊
具体来源:Sci. China Ser. B-Chem. 2010, 53, 1114. http://link.springer.com/article/10.1007/s11426-010-0145-5
发表时间:2010年
A novel hyperbranched multiarm copolymer of HBPO-star-PDEAEMA with a hydrophobic poly(3-ethyl-3-(hydroxymethyl) oxetane) (HBPO) core and many cationic poly(2-(N,N-diethylamino)ethyl methacrylate) (PDEAEMA) arms has been synthesized through an atom transfer radical polymerization (ATRP) method, and been applied to spontaneously reduce and stabilize gold nanoparticles (AuNPs) in water without other additional agents. The size of the nanoparticles could be effectively controlled at about 4 nm, and the nanoparticles are extremely stable in solution without aggregation even for one year. It was found that solution pH and the molar ratio of N/Au have certain effects on the size and stability of AuNPs. This work provides a simple method for the synthesis of uniform and highly stable AuNPs.
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