Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1976-11-21
pubmed:abstractText
Optically detected ESR spectra in zero magnetic field of the triplet state of three photosynthetic bacteria are presented. The zero field splitting parameters [D] and [E] and the widths of the resonances show small but significant differences for the three bacteria. The resonance lines are inhomogeneously broadened as demonstrated by hole-burning experiments. The populating probabilities and depopulating rates for the triplet sublevels have been measured. The populating kinetics are very similar for the three bacteria. The depopulating rates are more than one order faster than those of chlorophyll a and chlorophyll b and of porphyrin model systems. The populating probability of the lowest level is about 6 times less, and the depopulating rate about 6 times slower, than for the upper levels, identifying this level as the level connected to the molecular z-axis perpendicular to the plane of the molecule. The relative populations of the triplet sublevels are almost equal in zero magnetic field.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
0006-3002
pubmed:author
pubmed:issnType
Print
pubmed:day
13
pubmed:volume
440
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
765-71
pubmed:dateRevised
2000-12-18
pubmed:meshHeading
pubmed:year
1976
pubmed:articleTitle
Kinetics of populating and depopulating of the components of the photoinduced triplet state of the photosynthetic bacteria Rhodospirillum rubrum, Rhodopseudomonas spheroides (wild type), and its mutant R-26 as measured by ESR in zero-field.
pubmed:publicationType
Journal Article