Near-infrared-excitation resonance Raman spectra of the primary electron donor in photosynthetic reaction centers from Rhodobacter sphaeroides

Journal Article · Wed Aug 29 00:00:00 EDT 1990 · Journal of the American Chemical Society; (United States)

DOI:https://doi.org/10.1021/ja00174a044· OSTI ID:5425246

Donohoe, R J; Dyer, R B; Swanson, B I ^[1]; Violette, C A; Frank, H A ^[2]; Bocian, D F ^[3]

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1. Los Alamos National Lab., NM (USA)
2. Univ. of Connecticut, Storrs (USA)
3. Carnegie Mellon Univ., Pittsburgh, PA (USA)

The x-ray crystal structures of bacterial photosynthetic reaction centers (RCs) serve as bench marks for establishing a detailed description of the light-induced electron-transfer process. Much recent work has focused on the characterization of the electronic properties of the primary electron donor state (P*), which is an excited state of the special pair dimer of bacteriochlorophyll (BChl) molecules in RCs. Thus far, most studies of P* have relied on optical spectroscopic techniques. No resonance Raman (RR) experiments have been reported that directly probe this state. The authors report the results of preliminary, low-frequency RR studies that probe the photophysically important, near-infrared absorption band of the primary electron donor in RCs from Rhodobacter sphaeroides wild-type strain 2.4.1.

• OSTI ID: 5425246
• Journal Information: Journal of the American Chemical Society; (United States), Vol. 112:18; ISSN 0002-7863
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
PHOTOSYNTHETIC REACTION CENTERS
RAMAN SPECTRA
ELECTRON TRANSFER
ELECTRONIC STRUCTURE
NEAR INFRARED RADIATION
PHOTOCHEMISTRY
PHOTOSYNTHETIC BACTERIA
CHEMISTRY
ELECTROMAGNETIC RADIATION
INFRARED RADIATION
RADIATIONS
SPECTRA
140505* - Solar Energy Conversion- Photochemical
Photobiological
& Thermochemical Conversion- (1980-)
400500 - Photochemistry
400102 - Chemical & Spectral Procedures