文献类型：期刊文献

英文题名：Precise size control of hydrophobic gold nanoparticles using cooperative effect of refluxing ripening and seeding growth

作者：Yang, Yun[1];Yan, Ya[2];Wang, Wei[1];Li, Jinru[1]

机构：[1]Chinese Acad Sci, Inst Chem, Key Lab Colloid & Interface Sci, Beijing 100086, Peoples R China;[2]E China Univ Sci & Technol, Sch Chem & Pharmaceut, Shanghai 200237, Peoples R China

年份：2008

卷号：19

期号：17

外文期刊名：NANOTECHNOLOGY

收录：;EI(收录号：20081811234178);WOS:【SCI-EXPANDED(收录号:WOS:000254329700018)】；

语种：英文

外文关键词：Growth rate - Hydrophobicity - Particle size analysis - Redox reactions - X ray photoelectron spectroscopy

摘要：We describe herein a synthetic technology for precise size control of monodispersed hybrid gold nanoparticles, which combines seeding growth and digestive ripening. In this procedure, alkyl amines allow the solubilization and thermal reduction of HAuCl4 while 2.1 nm gold nanoparticles capped by thiol functions are used as seeds. By carefully controlling the HAuCl4/seeds ratio, highly monodisperse gold nanoparticles with various sizes ( from 2.1 to 8.8 nm) can be generated. Variation of the alkyl amines as well as optimization of the growth procedure allows the precise tuning of particle size within a 0.5 nm range. On the basis of XPS and TEM studies, a mechanism for nanoparticle formation is proposed.