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Titolo:
THE SPECTROSCOPY OF THE LOW-LYING BANDS IN THE SPECIAL-PAIR RADICAL-CATIONS OF PHOTOSYNTHETIC REACTION CENTERS
Autore:
REIMERS JR; HUTTER MC; HUSH NS;
Indirizzi:
UNIV SYDNEY,SCH CHEM SYDNEY NSW 2006 AUSTRALIA UNIV SYDNEY,DEPT BIOCHEM SYDNEY NSW 2006 AUSTRALIA
Titolo Testata:
Photosynthesis research
fascicolo: 2-3, volume: 55, anno: 1998,
pagine: 163 - 171
SICI:
0166-8595(1998)55:2-3<163:TSOTLB>2.0.ZU;2-1
Fonte:
ISI
Lingua:
ENG
Soggetto:
BACTERIAL REACTION CENTERS; PRIMARY ELECTRON-DONOR; RHODOBACTER-SPHAEROIDES; EXCITED-STATES; MIXED-VALENCE; RESONANCE; SYSTEMS; DIMERS;
Keywords:
HOLE TRANSFER; NEAR-IR SPECTROSCOPY; RADICAL CATION; SPECIAL PAIR; VIBRONIC COUPLING;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
19
Recensione:
Indirizzi per estratti:
Citazione:
J.R. Reimers et al., "THE SPECTROSCOPY OF THE LOW-LYING BANDS IN THE SPECIAL-PAIR RADICAL-CATIONS OF PHOTOSYNTHETIC REACTION CENTERS", Photosynthesis research, 55(2-3), 1998, pp. 163-171

Abstract

The spectra of the special-pair cation radicals P+ produced after photoexcitation of photosynthetic reaction centres and initial electron transfer can, in principle, provide important information concerning the function of the reaction centres. Extraction of this information requires detailed knowledge of the spectroscopy of the cations, however. We review our contributions to this field concerning the bands observed at near 2500 cm(-1) and 8000 cm(-1), and review results obtained from the study of porphyrin reaction-centre model complexes. We also consider the impact of recent experimental developments in these fields. However, our primary focus is to raise the possibility that the observed band at 2500 cm(-1) is either a composite of two independent electronic transitions or has both an allowed component and a forbidden component arising from vibronic coupling to intense high-energy transitions. The resolution of this dichotomy will have profound consequences forinterpretation of the function of photosynthetic reaction centres.

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Documento generato il 24/11/20 alle ore 22:23:25