title: Synthesis and self-assembly of monodisperse silver-nanocrystal-doped silica particles.
abstract: A simple method based on the Stöber reaction was developed to prepare silver-nanocrystal-doped silica composite particles. The silane coupling agent N-[3-(trimethoxysilyl)dropyl]ethylene diamine (TSD) incorporated Ag+ into a siloxane framework and a further chemical reducer reduced Ag+ to silver nanoparticles. TEM images showed that, in the presence of TSD, silver nanocrystals (fcc) of 2-8 nm were homogeneously doped in the silica particles, which showed a typical surface plasmon resonance (SPR) peak. The as-prepared Ag/SiO2 composite particles can be self-assembled into long-range ordered lattices (or photonic crystals) over large areas.
authors.affiliation: Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100080, China.
authors.forename: Dong
authors.initials: D
authors.lastname: Chen
authors.forename: Linlin
authors.initials: L
authors.lastname: Li
authors.forename: Jianshu
authors.initials: J
authors.lastname: Liu
authors.forename: Shuo
authors.initials: S
authors.lastname: Qi
authors.forename: Fangqiong
authors.initials: F
authors.lastname: Tang
authors.forename: Xiangling
authors.initials: X
authors.lastname: Ren
authors.forename: Wei
authors.initials: W
authors.lastname: Wu
authors.forename: Jun
authors.initials: J
authors.lastname: Ren
authors.forename: Lin
authors.initials: L
authors.lastname: Zhang