Primary events of photosynthesis
Conference
·
OSTI ID:6337065
The primary events of photosynthesis are those photophysical and photochemical events that occur immediately after absorption of a photon by the photosynthetic pigments. The primary events include the migration of singlet excitons among the antenna pigments, exciton trapping by the reaction center, and a sequence of several electron transfer steps that leads to the formation of a stable electron-hole separation. All of the primary events occur within protein complexes which include chlorophylls, carotenoids, quinones, and various other transfer components. These complexes are called photosystems. Photosystems reside in a special photosynthetic membrane in organisms such as algae, higher plants, purple photosynthetic bacteria, and green photosynthetic bacteria. In this manuscript the primary events of photosynthesis are summarized with particular attention to the principles that they might hold for the design of molecular electronic devices.
- Research Organization:
- Argonne National Lab., IL (USA)
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 6337065
- Report Number(s):
- CONF-8103158-1; ON: DE83007780
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
14 SOLAR ENERGY
140505 -- Solar Energy Conversion-- Photochemical
Photobiological
& Thermochemical Conversion-- (1980-)
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400500* -- Photochemistry
ABSORPTION
AROMATICS
CARBOXYLIC ACIDS
CHEMICAL REACTIONS
CHEMISTRY
CHLOROPHYLL
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ELECTRONIC STRUCTURE
ELEMENTARY PARTICLES
ENERGY LEVELS
EXCITED STATES
HETEROCYCLIC ACIDS
HETEROCYCLIC COMPOUNDS
MASSLESS PARTICLES
MOLECULAR STRUCTURE
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
PHOTOCHEMICAL REACTIONS
PHOTOCHEMISTRY
PHOTONS
PHOTOSYNTHESIS
PHOTOSYNTHETIC REACTION CENTERS
PHYTOCHROMES
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PORPHYRINS
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140505 -- Solar Energy Conversion-- Photochemical
Photobiological
& Thermochemical Conversion-- (1980-)
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400500* -- Photochemistry
ABSORPTION
AROMATICS
CARBOXYLIC ACIDS
CHEMICAL REACTIONS
CHEMISTRY
CHLOROPHYLL
ELECTRON TRANSFER
ELECTRONIC STRUCTURE
ELEMENTARY PARTICLES
ENERGY LEVELS
EXCITED STATES
HETEROCYCLIC ACIDS
HETEROCYCLIC COMPOUNDS
MASSLESS PARTICLES
MOLECULAR STRUCTURE
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
PHOTOCHEMICAL REACTIONS
PHOTOCHEMISTRY
PHOTONS
PHOTOSYNTHESIS
PHOTOSYNTHETIC REACTION CENTERS
PHYTOCHROMES
PIGMENTS
PORPHYRINS
QUINONES
SYNTHESIS