期刊
JOURNAL OF MATERIALS CHEMISTRY
卷 20, 期 12, 页码 2474-2478出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/b922145j
关键词
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资金
- National Science Foundation [EEC-0118007, EEC-0647452]
- National Science Council of Taiwan [NSC-97-2627-M-005-001]
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.
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