期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 131, 期 6, 页码 2274-2282出版社
AMER CHEMICAL SOC
DOI: 10.1021/ja807874e
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资金
- European SA-NANO [STRP 013698]
- Italian Ministry of Research [RBLA03ER38, FAR-DM 18604]
We report a general synthetic approach to tetrapod-shaped colloidal nanocrystals made of various combinations of II-VI semiconductors. Uniform tetrapods were prepared using preformed seeds in the sphalerite structure, onto which arms were grown by coinjection of the seeds and chemical precursors into a hot mixture of surfactants. By this approach, a wide variety of core materials could be chosen (in practice, most of the II-VI semiconductors that could be prepared in the sphalerite phase, namely, CdSe, ZnTe, CdTe); in contrast, the best materials for arm growth were CdS and CdTe. The samples were extensively characterized with the aid of several techniques.
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