Photoluminescent silicon nanocrystals stabilized by ionic liquid

被引：0
作者：
A. Kamyshny
V. N. Zakharov
M. A. Zakharov
A. V. Yatsenko
S. V. Savilov
L. A. Aslanov
S. Magdassi
机构：
[1] The Hebrew University of Jerusalem,Casali Institute of Applied Chemistry, Institute of Chemistry
[2] Lomonosov Moscow State University,Chemical Faculty
来源：
Journal of Nanoparticle Research | 2011年 / 13卷
关键词：
Silicon nanocrystals; Silicon photoluminescence; Ionic liquids; Carbene; Nanoparticles;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Silicon nanocrystals stabilized by an ionic liquid, dimethylimidazolium iodide, were synthesized by chemical reduction of SiBr4 with metallic Na in an organic solvent, diglyme. The nanoparticles were crystalline with a diamond cubic lattice and average size of 3.5 nm. Solid state 13C- and 29Si-NMR CP MAS spectra indicate the formation of imidazolium carbene, which ligates the Si atoms at the surface of the nanoparticles. The synthesized Si nanoparticles exhibit photoluminescence with an emission maximum in the red spectral range when excited at 320 nm. The origin of this luminescence is suggested to be mainly related to quantum confinement.
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页码：1971 / 1978
页数：7
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