Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/70079
標題: CdSe tetrapod synthesis using cetyltrimethylammonium bromide and heat transfer fluids
作者: Ko, W.Y.L.
Bagaria, H.G.
Asokan, S.
Lin, K.J.
Wong, M.S.
關鍵字: colloidal nanocrystal heterostructures
shape control
quantum rods
optical-properties
cdte nanocrystals
seeded growth
cdsexte1-x
nanocrystals
nano-tetrapods
morphology
nanostructures
期刊/報告no:: Journal of Materials Chemistry, Volume 20, Issue 12, Page(s) 2474-2478.
摘要: The synthesis of CdSe tetrapod-shaped quantum dots using phenyl-based heat transfer fluids as inexpensive alternatives to octadecene solvent was studied. The CdSe tetrapods were synthesized using the hot-injection method, in which the trioctylphosphine selenide precursor and the shape-inducing cetyltrimethylammonium bromide surfactant were injected into a cadmium oleate-containing solvent at 190 degrees C. At a synthesis temperature of 160 degrees C, the resulting quantum dot particles were found to grow more slowly in heat transfer fluids and pure phenyl-type solvents than in octadecene. With synthesis time, the selectivity to tetrapods increased, and the arms grew proportionally in width and length. The use of heat transfer fluids provides a convenient means to control growth of shaped nanoparticles.
URI: http://hdl.handle.net/11455/70079
ISSN: 0959-9428
文章連結: http://dx.doi.org/10.1039/b922145j
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