title: Silver nanoparticles capped by oleylamine: formation, growth, and self-organization.
abstract: Nearly monodisperse silver nanoparticles have been prepared in a simple oleylamine-liquid paraffin system. Intensive study has found that the formation process of silver nanoparticles could be divided into three stages: growth, incubation, and Ostwald ripening stages. Ultraviolet-visible spectroscopy, transmission electron microscopy (TEM), and high-resolution TEM have all demonstrated the occurrence of Ostwald ripening, which could result in better control over the size and size distribution of silver nanoparticles. SAXS (small-angle X-ray scattering) results show that the as-obtained silver nanoparticles can self-assemble into ordered arrays. The possible reduction mechanism of silver ions by oleylamine is related to the Ag+-mediated conversion of primary amines to nitriles.
authors.affiliation: Department of Chemistry and Laboratory of Advanced Materials, Fudan University, 220 Handan Road, Shanghai 200433, P. R. China. chenmeng@fudan.edu.cn
authors.forename: Meng
authors.initials: M
authors.lastname: Chen
authors.forename: Yong-Gang
authors.initials: YG
authors.lastname: Feng
authors.forename: Xia
authors.initials: X
authors.lastname: Wang
authors.forename: Ting-Cheng
authors.initials: TC
authors.lastname: Li
authors.forename: Jun-Yan
authors.initials: JY
authors.lastname: Zhang
authors.forename: Dong-Jin
authors.initials: DJ
authors.lastname: Qian