Spectral hole burning and flourescence studies of a synthetic chlorophyll dimer, a bacterial antenna system and a bacterial reaction center
Hole burning and fluorescence spectroscopy are applied to a synthetic chlorophyll dimer, an antenna system from the bacterium Prosthecochloris aestuarii and a reaction center from the bacterium Rhodobacter sphaeroides. Information concerning the strength of the linear electron-phonon (exciton-phonon) coupling, inhomogeneous broadening, energy transfer times, nature or structure of the excited states (S{sub 1}), the excited state decay times and the vibrational levels of S{sub 1} for these three systems are reported and discussed. A theory for modelling the hole shape and absorption profile for a single transition which is inhomogeneously broadened and coupled to two low frequency modes, with arbitrary coupling strength, is presented and applied to photochemical hole spectra and the absorption profile of the bacterial RC from Rhodobacter sphaeroides. 122 refs., 29 figs.
- Research Organization:
- Ames Lab., IA (USA)
- Sponsoring Organization:
- DOE/ER
- DOE Contract Number:
- W-7405-ENG-82
- OSTI ID:
- 6994515
- Report Number(s):
- IS-T-1469; ON: DE90012447
- Country of Publication:
- United States
- Language:
- English
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Thu Jul 26 00:00:00 EDT 1990
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Related Subjects
14 SOLAR ENERGY
140505* -- Solar Energy Conversion-- Photochemical
Photobiological
& Thermochemical Conversion-- (1980-)
550200 -- Biochemistry
59 BASIC BIOLOGICAL SCIENCES
ABSORPTION SPECTRA
CARBOXYLIC ACIDS
CHEMICAL REACTIONS
CHEMISTRY
CHLOROPHYLL
CHLOROPHYLL-BINDING PROTEINS
ELECTRON TRANSFER
EMISSION SPECTROSCOPY
ENERGY LEVELS
EXCITED STATES
FLUORESCENCE SPECTROSCOPY
HETEROCYCLIC ACIDS
HETEROCYCLIC COMPOUNDS
HOLES
LASERS
LINE BROADENING
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PHOTOCHEMICAL REACTIONS
PHOTOCHEMISTRY
PHOTOSYNTHESIS
PHOTOSYNTHETIC BACTERIA
PHOTOSYNTHETIC REACTION CENTERS
PHYTOCHROMES
PIGMENTS
PORPHYRINS
PROTEINS
SPECTRA
SPECTROSCOPY
SYNTHESIS
140505* -- Solar Energy Conversion-- Photochemical
Photobiological
& Thermochemical Conversion-- (1980-)
550200 -- Biochemistry
59 BASIC BIOLOGICAL SCIENCES
ABSORPTION SPECTRA
CARBOXYLIC ACIDS
CHEMICAL REACTIONS
CHEMISTRY
CHLOROPHYLL
CHLOROPHYLL-BINDING PROTEINS
ELECTRON TRANSFER
EMISSION SPECTROSCOPY
ENERGY LEVELS
EXCITED STATES
FLUORESCENCE SPECTROSCOPY
HETEROCYCLIC ACIDS
HETEROCYCLIC COMPOUNDS
HOLES
LASERS
LINE BROADENING
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PHOTOCHEMICAL REACTIONS
PHOTOCHEMISTRY
PHOTOSYNTHESIS
PHOTOSYNTHETIC BACTERIA
PHOTOSYNTHETIC REACTION CENTERS
PHYTOCHROMES
PIGMENTS
PORPHYRINS
PROTEINS
SPECTRA
SPECTROSCOPY
SYNTHESIS