Flexible ureasil hybrids with tailored optical properties through doping with metal nanoparticles

被引:47
作者
Boev, VI
Pérez-Juste, J
Pastoriza-Santos, I
Silva, CJR
Gomes, MDJM
Liz-Marzán, LM
机构
[1] Univ Vigo, Dept Quim Fis, Vigo 36310, Spain
[2] Univ Minho, Dept Quim, P-4710057 Braga, Portugal
关键词
D O I
10.1021/la048902r
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Hybrid organic-inorganic nanocomposites containing uniform distributions of metal nanoparticles have been prepared by mixing a preformed nanoparticle colloid with the precursors of a ureasil, prior to the sol-gel transition. These nanocomposites possess not only high optical quality and optical features dictated by the size and shape of the nanoparticle dopants but also a high degree of flexibility, which can largely enhance the range of applications in practical devices. The deposition of a uniform silica shell on the nanoparticle surface prior to the sol-gel transition was found to be required to maintain the colloidal stability during the process and, thus, to retain the optical properties in the final nanocomposite material. This method can be readily extended to other materials, such as semiconductor and magnetic nanoparticles.
引用
收藏
页码:10268 / 10272
页数:5
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