Determination of the structural features of a long-lived electron-transfer state of 9-mesityl-10-methylacridinium ion |
| |
Authors: | Hoshino Manabu Uekusa Hidehiro Tomita Ayana Koshihara Shin-ya Sato Tokushi Nozawa Shunsuke Adachi Shin-ichi Ohkubo Kei Kotani Hiroaki Fukuzumi Shunichi |
| |
Affiliation: | Department of Chemistry and Materials Science, Tokyo Institute of Technology, Meguro-ku, Tokyo 152-8551, Japan. mhoshino@chem.titech.ac.jp |
| |
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. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|