Synthesis of cationic hyperbranched multiarm copolymer and its application in self-reducing and stabilizing gold nanoparticles  被引量:2

Synthesis of cationic hyperbranched multiarm copolymer and its application in self-reducing and stabilizing gold nanoparticles

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作  者:Zhai, Shuo  Hong, HaiYan  Zhou, YongFeng  Yan, DeYue 

机构地区:[1] State Key Laboratory of Metal Matrix Composites, College of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China

出  处:《Science China Chemistry》2010年第5期1113-1120,共8页中国科学(化学英文版)

基  金:supported by the National Natural Science Foundation of China(20774057,50633010,20874060 &50873058);National Basic Research Program(2007CB808000 & 2009CB930400);the Program for New Century Excellent Talents in University(NCET-07-0558);the Foundation for the Author of National Excellent Doctoral Dissertation of China;the Fok Ying Tung Education Foundation(114029);the Shanghai Leading Academic Discipline Project(B202)

摘  要: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.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.

关 键 词:GOLD nanoparticles HYPERBRANCHED POLYMERS self-reduction stabilization 

分 类 号:O6[理学—化学]

 

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