THE SYNTHESIS AND SPECTROSCOPIC CHARACTERIZATION OF A CHIRAL ZINC(II)PORPHYRIN DIMER CONTAINING AN AMINO-ACID BRIDGE - MODEL COMPLEXES FORTHE INDUCED CIRCULAR-DICHROISM OF PORPHYRIN PROTEIN SUPRAMOLECULES

Authors
LIU HY HUANG JW TIAN X JIAO XD LUO GT JI LN
Citation
Hy. Liu et al., THE SYNTHESIS AND SPECTROSCOPIC CHARACTERIZATION OF A CHIRAL ZINC(II)PORPHYRIN DIMER CONTAINING AN AMINO-ACID BRIDGE - MODEL COMPLEXES FORTHE INDUCED CIRCULAR-DICHROISM OF PORPHYRIN PROTEIN SUPRAMOLECULES, Inorganica Chimica Acta, 272(1-2), 1998, pp. 295-299
Citations number
26
Categorie Soggetti
Chemistry Inorganic & Nuclear
Journal title
Inorganica Chimica Acta → ACNP
ISSN journal
00201693
Volume
272
Issue
1-2
Year of publication
1998
Pages
295 - 299
Database
ISI
SICI code
0020-1693(1998)272:1-2<295:TSASCO>2.0.ZU;2-Y
Abstract
A number of amino acid porphyrins and their zinc complexes were synthe sized and characterized. Only the zinc porphyrin dimer containing a ch iral amino acid bridge o,o-C-2-AA-C-2-(TPP)(2)Zn-2 showed significant induced circular dichroism (ICD). The observed ICD of the present syst em has been proposed to arise from chiral exciton coupling interaction between two zinc porphyrins of the dimer. Our CD experimental results also indicated that the obvious Soret band ICD of porphyrin does not seem to be caused by a porphyrin-aromatic group coupled-oscillator int eraction or a porphyrin-carbonyl coupling mechanism. (C) 1998 Elsevier Science S.A. All rights reserved.