Electronic structure of cobalt nanocrystals suspended in liquid
- Resource Type
- Authors
- Liu, Hongjian; Guo, Jinghua; Yin, Yadong; Augustsson, Andreas; Dong, Chungli; Nordgren, Joseph; Chang, Chinglin; Alivisatos, Paul; Thornton, Geoff; Ogletree, D. Frank; Requejo, Felix G.; de Groot, Frank; Salmeron, Miquel; Sub Inorganic Chemistry and Catalysis; Inorganic Chemistry and Catalysis
- Source
- Liu, Hongjian; Guo, Jinghua; Yin, Yadong; Augustsson, Andreas; Dong, Chungli; Nordgren, Joseph; et al.(2008). Electronic structure of cobalt nanocrystals suspended in liquid. Lawrence Berkeley National Laboratory. Lawrence Berkeley National Laboratory: Lawrence Berkeley National Laboratory. Retrieved from: http://www.escholarship.org/uc/item/8bb9r6xn
Nano Letters, 7(7), 1919. American Chemical Society
- Subject
- Materials science
Absorption spectroscopy
Analytical chemistry
SOLIDS
chemistry.chemical_element
Nanoparticle
Bioengineering
Electronic structure
ABSORPTION SPECTROSCOPY
Fluorescence spectroscopy
symbols.namesake
Condensed Matter::Materials Science
X-RAY-EMISSION
Taverne
Physics::Atomic and Molecular Clusters
NANOPARTICLES
SPECTRA
General Materials Science
Physics::Chemical Physics
Mechanical Engineering
General Chemistry
Condensed Matter Physics
FLUORESCENCE SPECTROSCOPY
SIZE
chemistry
Nanocrystal
symbols
Physical chemistry
Materials Sciences
SHAPE
Absorption (chemistry)
LIGAND
Raman spectroscopy
Cobalt
BEHAVIOR
- Language
- English
- ISSN
- 1530-6984
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.