Studies of photoredox reactions on nanosize semiconductors

Conference · Sat Feb 01 00:00:00 EST 1997

OSTI ID:460789

Wilcoxon, J P ^[1]; Parsapour, F; Kelly, D F ^[2]

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1. Sandia National Labs., Albuquerque, NM (United States)
2. Colorado State Univ., Fort Collins, CO (United States). Dept. of Chemistry

Light induced electron transfer (ET) from nanosize semiconductors Of MoS{sub 2} to organic electron acceptors such as 2,2`-bipyridine (bpy) and methyl substituted 4,4`,5,5`-tetramethyl- 2,2`-bipyridine (tmb) was studied by static and time resolved photoluminescence spectroscopy. The kinetics of ET were varied by changing the nanocluster size (the band gap), the electron acceptor, and the polarity of the solvent. MoS{sub 2} is an especially interesting semiconductor material as it is an indirect semiconductor in bulk form, and has a layered covalent bonding arrangement which is highly resistant to photocorrosion.

• Research Organization: Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
• Sponsoring Organization: USDOE Office of Environmental Restoration and Waste Management, Washington, DC (United States)
• DOE Contract Number: AC04-94AL85000
• OSTI ID: 460789
• Report Number(s): SAND-96-2815C; CONF-970578-1; ON: DE97001883
• Resource Relation: Conference: 4. international conference on quantum confinement: nanoscale materials, devices and systems, Montreal (Canada), 4-9 May 1997; Other Information: PBD: [1997]
• Country of Publication: United States
• Language: English

Related Subjects

40 CHEMISTRY
36 MATERIALS SCIENCE
MOLYBDENUM SULFIDES
ELECTRON TRANSFER
REDOX REACTIONS
PHOTOCHEMICAL REACTIONS
PHOTOCHEMISTRY
SEMICONDUCTOR MATERIALS
HOLES
LIQUID COLUMN CHROMATOGRAPHY
CHEMICAL PREPARATION
OPTICAL PROPERTIES
ELECTRONIC STRUCTURE
QUANTUM EFFICIENCY
PHOTOLUMINESCENCE
SCANNING LIGHT MICROSCOPY
BIPYRIDINES