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Colloidal Nanocrystal Shape and Size Control: The Case of Cobalt

2001; American Association for the Advancement of Science; Volume: 291; Issue: 5511 Linguagem: Inglês

10.1126/science.1058495

1095-9203

Víctor Puntes, Kannan M. Krishnan, A. Paul Alivisatos,

Gold and Silver Nanoparticles Synthesis and Applications

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.