Ligand-Mediated Modification of the Electronic Structure of CdSe Quantum Dots.
Summary of "Ligand-Mediated Modification of the Electronic Structure of CdSe Quantum Dots."
X-ray absorption spectroscopy and ab initio modeling of the experimental spectra have been used to investigate the effects of surface passivation on the unoccupied electronic states of CdSe quantum dots (QDs). Significant differences are observed in the unoccupied electronic structure of the CdSe QDs, which are shown to arise from variations in specific ligand-surface bonding interactions.
Affiliation
Lawrence Livermore National Laboratory , 7000 East Avenue, Livermore, California 94550, United States.
Journal Details
This article was published in the following journal.
Name: Nano letters
ISSN: 1530-6992
Pages: 2763-7
Links
- PubMed Source: http://www.ncbi.nlm.nih.gov/pubmed/22594309
- DOI: http://dx.doi.org/10.1021/nl300886h
Medical and Biotech [MESH] Definitions
Quantum Dots
Nanometer sized fragments (the dots) of semiconductor crystalline material which emit PHOTONS. The wavelength is based on the quantum confinement size of the dot. They are brighter and more persistent than organic chemical INDICATORS. They can be embedded in MICROBEADS for high throughput ANALYTICAL CHEMISTRY.
Nanoparticles
Nanometer-sized particles that are nanoscale in three dimensions. They include nanocrystaline materials; NANOCAPSULES; METAL NANOPARTICLES; DENDRIMERS, and QUANTUM DOTS. The uses of nanoparticles include DRUG DELIVERY SYSTEMS and cancer targeting and imaging.
X-ray Absorption Spectroscopy
Analysis of the energy absorbed across a spectrum of x-ray energies/wavelengths to determine the chemical structure and electronic states of the absorbing medium.
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Electronic devices that increase the magnitude of a signal's power level or current.
Tnf-related Apoptosis-inducing Ligand
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