文章基本信息

标题：Photophysical properties of zinc and magnesium tris(pyrochlorophyllide a) 1,1,1-tris(hydroxymethyl)ethane triesters
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作者：M. J. Yuen ; G. L. Closs ; J. J. Katz 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：1980
卷号：77
期号：10
页码：5598-5601
DOI：10.1073/pnas.77.10.5598
语种：English
出版社：The National Academy of Sciences of the United States of America
摘要：The zinc and magnesium tris(pyrochlorophyllide a) 1,1,1-tris(hydroxymethyl)ethane triesters have properties that are very similar to those exhibited by pairs of pyrochlorophyll a or chlorophyll a linked by ethylene glycol through their propionic acid side chains. In the open configuration, the fluorescence lifetimes and emission spectra of the triesters resemble those of chlorophyll a monomers. However, the triesters have a mechanism for energy dissipation not present in monomeric chlorophyll a, which prevents the build-up of significant concentrations of molecules in S1 states. Optical pumping of these compounds in their folded configuration results in the formation of high concentrations of molecules in S1 states and in laser light emission, which originates from the two folded macrocycles. The optical data indicate that efficient energy transfer occurs from the open to the folded configurations.
关键词：linked chlorophyll pairs ; energy transfer ; fluorescence