Synthesis of CdSe nanoparticles using various organometallic cadmium precursors

被引:104
作者
Hambrock, J [1 ]
Birkner, A [1 ]
Fischer, RA [1 ]
机构
[1] Ruhr Univ Bochum, Lehrstuhl Anorgan Chem 2, D-44780 Bochum, Germany
关键词
D O I
10.1039/b104231a
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Investigations into replacing Me2Cd as a common precursor for the synthesis of CdSe nanoparticles by pyrolysis in a hot coordinating solvent have proven that more stable, less volatile or even crystalline organometallic cadmium compounds can be used instead of Me2Cd. Dineopentylcadmium, bis(3-diethylaminopropyl) cadmium and (2,2'-bipyridine) dimethylcadmium have been used successfully as cadmium sources for the preparation of tri-n-octylphosphine oxide (TOPO)-capped CdSe nanoparticles. The resulting nanocrystallites have been characterized by UV-VIS and IR spectroscopy, photoluminescence spectroscopy (PL), mass spectrometry and transmission electron microscopy (TEM). They consist of separated, well defined spherical particles and show a small size distribution as well as a characterisitic blue shift due to quantum confinement in their optical spectra. The replacement of Me2Cd by less dangerous organometallic precursors thus results in nanocrystallites that show no reduction in quality when compared to the standard method.
引用
收藏
页码:3197 / 3201
页数:5
相关论文
共 22 条