Photoinduced electron transfer reactions of ruthenium(II)-complexes containing amino acid with quinones.
J Fluoresc
; 24(3): 875-84, 2014 May.
Article
em En
| MEDLINE
| ID: mdl-24590578
ABSTRACT
With the aim of mimicking, at basic level the photoinduced electron transfer process in the reaction center of photosystem II, ruthenium(II)-polypyridyl complexes, carrying amino acids were synthesized and studied their photoinduced electron transfer reactions with quinones by steady state and time resolved measurements. The reaction of quinones with excited state of ruthenium(II)-complexes, I-V in acetonitrile has been studied by luminescence quenching technique and the rate constant, k(q), values are close to the diffusion controlled rate. The detection of the semiquinone anion radical in this system using time-resolved transient absorption spectroscopy confirms the electron transfer nature of the reaction. The semiclassical theory of electron transfer has been successfully applied to the photoluminescence quenching of Ru(II)-complexes with quinones.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Compostos Organometálicos
/
Quinonas
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Rutênio
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Elétrons
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Aminoácidos
/
Luz
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Ânions
Idioma:
En
Revista:
J Fluoresc
Assunto da revista:
BIOFISICA
Ano de publicação:
2014
Tipo de documento:
Article