MAGNETIC-FIELD EFFECT ON THE PHOTOCONDUCTIVITY OF ALL-TRANS BETA-CAROTENE SINGLE-CRYSTALS

Authors
TRIEBEL M BATALOV S FRANKEVICH E ANGERHOFER A FRICK J VONSCHUTZ JU WOLF HC
Citation
M. Triebel et al., MAGNETIC-FIELD EFFECT ON THE PHOTOCONDUCTIVITY OF ALL-TRANS BETA-CAROTENE SINGLE-CRYSTALS, Zeitschrift für physikalische Chemie, 180, 1993, pp. 209-221
Citations number
50
Categorie Soggetti
Chemistry Physical","Physics, Atomic, Molecular & Chemical
Journal title
Zeitschrift für physikalische Chemie → ACNP
ISSN journal
09429352
Volume
180
Year of publication
1993
Part
1-2
Pages
209 - 221
Database
ISI
SICI code
0942-9352(1993)180:<209:MEOTPO>2.0.ZU;2-9
Abstract
Magnetic field effects (MFE) of the photoconductivity of beta-carotene single crystals were studied at room temperature. Two effects with di fferent sign and angular dependence were observed and interpreted as d ue to radical pair recombination and the interaction of triplet excito ns with trapped charges. A model of the photophysical processes that t ake place at the surface of the beta-carotene crystals describing our observations is presented.