Electronic structure of cobalt nanocrystals suspended inliquid
The electronic structure of cobalt nanocrystals suspended in liquid as a function of size has been investigated using in-situ x-ray absorption and emission spectroscopy. A sharp absorption peak associated with the ligand molecules is found that increases in intensity upon reducing the nanocrystal size. X-ray Raman features due to d-d and to charge-transfer excitations of ligand molecules are identified. The study reveals the local symmetry of the surface of {var_epsilon}-Co phase nanocrystals, which originates from a dynamic interaction between Co nanocrystals and surfactant + solvent molecules.
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Director. Office of Science. Basic EnergySciences
- DOE Contract Number:
- DE-AC02-05CH11231
- OSTI ID:
- 932695
- Report Number(s):
- LBNL-63188; R&D Project: 517950; BnR: KC0203010; TRN: US200814%%172
- Journal Information:
- Nano Letters, Vol. 7, Issue 7; Related Information: Journal Publication Date: 2007
- Country of Publication:
- United States
- Language:
- English
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