Determination of the structural features of a long-lived electron-transfer state of 9-mesityl-10-methylacridinium ion.
J Am Chem Soc
; 134(10): 4569-72, 2012 Mar 14.
Article
em En
| MEDLINE
| ID: mdl-22375893
ABSTRACT
Extensive efforts have been devoted to developing electron donor-acceptor systems that mimic the utilization of solar energy that occurs in photosynthesis. X-ray crystallographic analysis shows how absorbed photon energy is stabilized in those compounds by structural changes upon photoinduced electron transfer (ET). In this study, structural changes of a simple electron donor-acceptor dyad, 9-mesityl-10-methylacridinium cation (Acr(+)-Mes), upon photoinduced ET were directly observed by laser pump and X-ray probe crystallographic analysis. The N-methyl group in Acr(+) was bent, and a weak electrostatic interaction between Mes and a counteranion in the crystal (ClO(4)) was generated by photoinduced ET. These structural changes correspond to reduction and oxidation due to photoinduced ET and directly elucidate the mechanism in Acr(+)-Mes for mimicking photosynthesis efficiently.
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1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Acridinas
Idioma:
En
Ano de publicação:
2012
Tipo de documento:
Article