COVALENTLY-LINKED PYROPHEOPHORBIDE DIMERS AS MODELS OF THE SPECIAL PAIR IN THE PHOTOSYNTHETIC REACTION-CENTER

Authors
OSUKA A WADA Y SHINODA S
Citation
A. Osuka et al., COVALENTLY-LINKED PYROPHEOPHORBIDE DIMERS AS MODELS OF THE SPECIAL PAIR IN THE PHOTOSYNTHETIC REACTION-CENTER, Tetrahedron, 52(12), 1996, pp. 4311-4326
Citations number
29
Categorie Soggetti
Chemistry Inorganic & Nuclear
Journal title
Tetrahedron → ACNP
ISSN journal
00404020
Volume
52
Issue
12
Year of publication
1996
Pages
4311 - 4326
Database
ISI
SICI code
0040-4020(1996)52:12<4311:CPDAMO>2.0.ZU;2-F
Abstract
Covalently linked pyropheophorbide dimers were prepared by the condens ation reactions 3-devinyl-3-carboxylpyropheophorbide-alpha. Among thes e, dimers bridged by 1,8-naphthalene spacers exhibit large electronic interactions in the H-1 NMR and UV-visible spectra and in the redox po tentials. In addition, a 1,8-naphthalene-bridged amide-linked dimer di splays notable broadening and split CD effect in the Qy band as well a s strong fluorescence quenching, being analogous to the special pair i n the photosynthetic reaction center.