Document Detail


Singlet and triplet excited state properties of natural chlorophylls and bacteriochlorophylls.
MedLine Citation:
PMID:  21086044     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
Ten naturally occurring chlorophylls (a, b, c (2), d) and bacteriochlorophylls (a, b, c, d, e, g) were purified and studied using the optical spectroscopic techniques of both steady state and time-resolved absorption and fluorescence. The studies were carried out at room temperature in nucleophilic solvents in which the central Mg is hexacoordinated. The comprehensive studies of singlet excited state lifetimes show a clear dependency on the structural features of the macrocycle and terminal substituents. The wide-ranging studies of triplet state lifetime demonstrate the existence of an energy gap law for these molecules. The knowledge of the dynamics and the energies of the triplet state that were obtained in other studies allowed us to construct an energy gap law expression that can be used to estimate the triplet state energies of any (B)chlorophyll molecule from its triplet lifetime obtained in a liquid environment.
Authors:
Dariusz M Niedzwiedzki; Robert E Blankenship
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Publication Detail:
Type:  Journal Article     Date:  2010-11-18
Journal Detail:
Title:  Photosynthesis research     Volume:  106     ISSN:  1573-5079     ISO Abbreviation:  Photosyn. Res.     Publication Date:  2010 Dec 
Date Detail:
Created Date:  2010-12-21     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100954728     Medline TA:  Photosynth Res     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  227-38     Citation Subset:  IM    
Affiliation:
Departments of Biology and Chemistry, Washington University in St. Louis, St. Louis, MO, 63130-4899, USA.
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