文章基本信息

标题：Photoprocesses in covalently linked pyrochlorophyllide dimer: Triplet state formation and opening and closing of hydroxylic linkages
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作者：N. Periasamy ; H. Linschitz ; G. L. Closs 等
期刊名称：Proceedings of the National Academy of Sciences
印刷版ISSN：0027-8424
电子版ISSN：1091-6490
出版年度：1978
卷号：75
期号：6
页码：2563-2566
DOI：10.1073/pnas.75.6.2563
语种：English
出版社：The National Academy of Sciences of the United States of America
摘要：Covalently linked pyrochlorophyllide a dimers exist in solution in either "pinned" or unfolded form, depending on the concentration of hydroxylic (H bonding) or non-H-bonding Lewis bases. Laser flash photolysis studies have been made on these dimer forms and on pyrochlorophyllide monomer at 30-nsec resolution. Spectra and recovery kinetics, including observation of both the triplet decay and ground state folding reactions, show that the flash transient obtained from the pinned form consists of a triplet and ground state moiety in the unpinned configuration. A charge-transfer excited state is not seen.
关键词：photosynthesis ; chlorophyll aggregation ; active center ; photochemistry of metal complexes