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Title: Solution synthesis and characterization of quantum confined Ge nanoparticles

Abstract

A solution synthesis of crystalline Ge nanoparticles (nc-Ge) is reported. The metathesis reaction of NaGe with excess GeCl{sub 4} in glyme solvents produces nc-Ge. Metathesis reactions between KGe and excess GeCl{sub 4} or GeCl{sub 2}:(dioxane) in glyme and Mg{sub 2}Ge and excess GeCl{sub 4} in diglyme and triglyme were also investigated. The surface of these nanoparticles is terminated with alkyl groups by reaction with alkyl Li and Grignard reagents. The alkyl-terminated crystalline Ge nanoparticles ({cflx R}-nc-Ge) were characterized by Fourier transform infrared spectroscopy, high-resolution transmission electron microscopy, powder X-ray diffraction, UV-vis absorption spectroscopy, photoluminescence, and photoluminescence excitation spectroscopy. The optical properties of {cflx R}-nc-Ge made by this method agree with predictions from quantum confinement models.

Authors:
; ; ;
Publication Date:
Research Org.:
Lawrence Livermore National Lab., CA (US)
Sponsoring Org.:
USDOE; National Science Foundation (NSF)
OSTI Identifier:
20001172
DOE Contract Number:  
AC03-76SF00098; W-7405-ENG-48
Resource Type:
Journal Article
Journal Name:
Chemistry of Materials
Additional Journal Information:
Journal Volume: 11; Journal Issue: 9; Other Information: PBD: Sep 1999; Journal ID: ISSN 0897-4756
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; GERMANIUM; COLLOIDS; CHEMICAL PREPARATION; CRYSTAL STRUCTURE; OPTICAL PROPERTIES

Citation Formats

Taylor, B.R., Kauzlarich, S.M., Delgado, G.R., and Lee, H.W.H. Solution synthesis and characterization of quantum confined Ge nanoparticles. United States: N. p., 1999. Web. doi:10.1021/cm990203q.
Taylor, B.R., Kauzlarich, S.M., Delgado, G.R., & Lee, H.W.H. Solution synthesis and characterization of quantum confined Ge nanoparticles. United States. doi:10.1021/cm990203q.
Taylor, B.R., Kauzlarich, S.M., Delgado, G.R., and Lee, H.W.H. Wed . "Solution synthesis and characterization of quantum confined Ge nanoparticles". United States. doi:10.1021/cm990203q.
@article{osti_20001172,
title = {Solution synthesis and characterization of quantum confined Ge nanoparticles},
author = {Taylor, B.R. and Kauzlarich, S.M. and Delgado, G.R. and Lee, H.W.H.},
abstractNote = {A solution synthesis of crystalline Ge nanoparticles (nc-Ge) is reported. The metathesis reaction of NaGe with excess GeCl{sub 4} in glyme solvents produces nc-Ge. Metathesis reactions between KGe and excess GeCl{sub 4} or GeCl{sub 2}:(dioxane) in glyme and Mg{sub 2}Ge and excess GeCl{sub 4} in diglyme and triglyme were also investigated. The surface of these nanoparticles is terminated with alkyl groups by reaction with alkyl Li and Grignard reagents. The alkyl-terminated crystalline Ge nanoparticles ({cflx R}-nc-Ge) were characterized by Fourier transform infrared spectroscopy, high-resolution transmission electron microscopy, powder X-ray diffraction, UV-vis absorption spectroscopy, photoluminescence, and photoluminescence excitation spectroscopy. The optical properties of {cflx R}-nc-Ge made by this method agree with predictions from quantum confinement models.},
doi = {10.1021/cm990203q},
journal = {Chemistry of Materials},
issn = {0897-4756},
number = 9,
volume = 11,
place = {United States},
year = {1999},
month = {9}
}