A comparative study of dimerization of chlorophylls and pheophytins by fluorescence and odmir

Optical and ODMR data for dimers of pheophytin a and b and chlorophyll a and b are presented. It is proposed that pheophytin a forms a parallel dimer arising from π-π interaction, binding being essentially different from that in the corresponding chlorophyll dimer. The dimer of phcophytin a is less...

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Published inChemical physics letters Vol. 68; no. 1; pp. 65 - 70
Main Authors Kooyman, R.P.H., Schaafsma, T.J., Jansen, G., Clarke, Richard H., Hobart, David R., Leenstra, Willem R.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.12.1979
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Summary:Optical and ODMR data for dimers of pheophytin a and b and chlorophyll a and b are presented. It is proposed that pheophytin a forms a parallel dimer arising from π-π interaction, binding being essentially different from that in the corresponding chlorophyll dimer. The dimer of phcophytin a is less stable ( K ≈ 10 4 ol/mol) than that of chlorophyll a( K ≈ 10 6 ol/mol).
ISSN:0009-2614
1873-4448
DOI:10.1016/0009-2614(79)80070-6