Colloidal nanocrystal shape and size control: the case of cobalt.
We show that a relatively simple approach for controlling the colloidal synthesis of anisotropic cadmium selenide semiconductor nanorods can be extended to the size-controlled preparation of magnetic cobalt nanorods as well as spherically shaped nanocrystals. This approach helps define a minimum feature set needed to separately control the sizes and shapes of nanocrystals. The resulting cobalt nanocrystals produce interesting two- and three-dimensional superstructures, including ribbons of nanorods.
Department of Chemistry, University of California at Berkeley, Berkeley, CA 94720, USA. vfpuntes@lbl.gov
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Alivisatos
D016880:Anisotropy; D019187:Cadmium Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D003035:Cobalt / Q000737:chemistry*; D003102:Colloids; D003460:Crystallization; D008280:Magnetics; D008854:Microscopy, Electron; D019301:Oleic Acid / Q000737:chemistry; D009943:Organophosphorus Compounds / Q000737:chemistry; D018036:Selenium Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D012666:Semiconductors; D013696:Temperature
D019187:Cadmium Compounds; D003102:Colloids; D009943:Organophosphorus Compounds; D018036:Selenium Compounds; D019301:Oleic Acid; D003035:Cobalt; C044965:trioctyl phosphine oxide; C058667:cadmium selenide