ESEEM STUDY OF SPIN-SPIN INTERACTIONS IN SPIN-POLARIZED P(-) PAIRS INTHE PHOTOSYNTHETIC PURPLE BACTERIUM RHODOBACTER-SPHAEROIDES R26()Q(A)()

Authors
DZUBA SA GAST P HOFF AJ
Citation
Sa. Dzuba et al., ESEEM STUDY OF SPIN-SPIN INTERACTIONS IN SPIN-POLARIZED P(-) PAIRS INTHE PHOTOSYNTHETIC PURPLE BACTERIUM RHODOBACTER-SPHAEROIDES R26()Q(A)(), Chemical physics letters, 236(6), 1995, pp. 595-602
Citations number
24
Categorie Soggetti
Physics, Atomic, Molecular & Chemical
Journal title
Chemical physics letters → ACNP
ISSN journal
00092614
Volume
236
Issue
6
Year of publication
1995
Pages
595 - 602
Database
ISI
SICI code
0009-2614(1995)236:6<595:ESOSII>2.0.ZU;2-D
Abstract
Electron spin echo envelope modulation (ESEEM) of the transient spin-p olarised P(+)Q(A)(-) pairs has been studied at 20 and 220 K. The obser ved strong out-of-phase modulation is interpreted as resulting from el ectron-electron dipolar and exchange interactions. Fourier-transformed echo envelopes are consistent with the theory developed recently by T ang, Thurnauer and Norris and allow us to obtain readily the values of dipolar and exchange couplings. The results are insensitive to N-15 e nrichment.