私密直播全婐app免费大渔直播,国产av成人无码免费视频,男女同房做爰全过程高潮,国产精品自产拍在线观看

Links
Contact Info.
  • Address:上海市閔行區(qū)東川路800號(hào)上海交通大學(xué)化學(xué)化工學(xué)院化學(xué)A樓525
  • Zip:200240
  • Tel:021-54742664
  • Fax:
  • Email:yfzhou@sjtu.edu.cn
Current Location :> Home > Publications > Text
Synthesis of cationic hyperbranched multiarm copolymer and its application in self-reducing and stabilizing gold nanoparticles
writer:Zhai, S.; Hong, H. Y.; Zhou, Y. F.*; Yan, D. Y.*
keywords:gold nanoparticles, hyperbranched polymers, self-reduction, stabilization
source:期刊
specific source:Sci. China Ser. B-Chem. 2010, 53, 1114. http://link.springer.com/article/10.1007/s11426-010-0145-5
Issue time: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.