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Determination of the structural features of a long-lived electron-transfer state of 9-mesityl-10-methylacridinium ion

Title
Determination of the structural features of a long-lived electron-transfer state of 9-mesityl-10-methylacridinium ion
Authors
Hoshino M.Uekusa H.Tomita A.Koshihara S.-Y.Sato T.Nozawa S.Adachi S.-I.Ohkubo K.Kotani H.Fukuzumi S.
Ewha Authors
Shunichi Fukuzumi
SCOPUS Author ID
Shunichi Fukuzumiscopus
Issue Date
2012
Journal Title
Journal of the American Chemical Society
ISSN
0002-7863JCR Link
Citation
vol. 134, no. 10, pp. 4569 - 4572
Indexed
SCI; SCIE; SCOPUS WOS scopus
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. © 2012 American Chemical Society.
DOI
10.1021/ja300602h
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자연과학대학 > 화학·나노과학전공 > Journal papers
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