Magnetic resonance and optical spectroscopic studies of carotenoids
Abstract
It is our goal to study the role of a host lattice in the formation of radicals and excited singlet and triplet states that are relevant to photosynthesis. Particular emphasis is being placed on determining what is special about carotenoids that natural photosynthetic systems require them as antennae as well as for protection. We are thus manipulating the host matrix so as to understand the carotenoid function (protection, quenching, energy transfer and antenna) and the structure of carotenoid cations. To characterize their properties, we have carried out EPR, ENDOR, optical, molecular orbital and electrochemical studies of carotenoids and carotenoid cations produced chemically, electrochemically, radiolytically (x-ray irradiated freon matrices) and photolytically (solution photolysis by excimer radiation) as a function of the host matrix. 36 refs.
- Authors:
- Publication Date:
- Research Org.:
- Alabama Univ., University, AL (USA). Dept. of Chemistry
- Sponsoring Org.:
- USDOE; USDOE, Washington, DC (USA)
- OSTI Identifier:
- 5618929
- Report Number(s):
- DOE/ER/13465-6
ON: DE91014361
- DOE Contract Number:
- FG05-86ER13465
- Resource Type:
- Technical Report
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; CAROTENOIDS; OXIDATION; EXCITED STATES; TEMPERATURE DEPENDENCE; POLYMERS; ELECTRIC CONDUCTIVITY; RADICALS; CHEMICAL PREPARATION; ELECTROLYSIS; ELECTRON SPIN RESONANCE; ELECTRON TRANSFER; EXCIMER LASERS; MOLECULAR ORBITAL METHOD; NONLINEAR OPTICS; PHOTOLYSIS; PHOTOSYNTHESIS; PROGRESS REPORT; RADIOLYSIS; VOLTAMETRY; CHEMICAL RADIATION EFFECTS; CHEMICAL REACTIONS; CHEMISTRY; DECOMPOSITION; DOCUMENT TYPES; ELECTRICAL PROPERTIES; ENERGY LEVELS; GAS LASERS; HYDROCARBONS; LASERS; LYSIS; MAGNETIC RESONANCE; OPTICS; ORGANIC COMPOUNDS; PHOTOCHEMICAL REACTIONS; PHYSICAL PROPERTIES; PIGMENTS; RADIATION CHEMISTRY; RADIATION EFFECTS; RESONANCE; SYNTHESIS; TERPENES; 400500* - Photochemistry
Citation Formats
Kispert, L D. Magnetic resonance and optical spectroscopic studies of carotenoids. United States: N. p., 1991.
Web.
Kispert, L D. Magnetic resonance and optical spectroscopic studies of carotenoids. United States.
Kispert, L D. 1991.
"Magnetic resonance and optical spectroscopic studies of carotenoids". United States.
@article{osti_5618929,
title = {Magnetic resonance and optical spectroscopic studies of carotenoids},
author = {Kispert, L D},
abstractNote = {It is our goal to study the role of a host lattice in the formation of radicals and excited singlet and triplet states that are relevant to photosynthesis. Particular emphasis is being placed on determining what is special about carotenoids that natural photosynthetic systems require them as antennae as well as for protection. We are thus manipulating the host matrix so as to understand the carotenoid function (protection, quenching, energy transfer and antenna) and the structure of carotenoid cations. To characterize their properties, we have carried out EPR, ENDOR, optical, molecular orbital and electrochemical studies of carotenoids and carotenoid cations produced chemically, electrochemically, radiolytically (x-ray irradiated freon matrices) and photolytically (solution photolysis by excimer radiation) as a function of the host matrix. 36 refs.},
doi = {},
url = {https://www.osti.gov/biblio/5618929},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed May 01 00:00:00 EDT 1991},
month = {Wed May 01 00:00:00 EDT 1991}
}