キハラ ノブヒロ   Kihara Nobuhiro
  木原 伸浩
   所属   神奈川大学  理学部 化学科
   職種   教授
言語種別 英語
発行・発表の年月 2009/12
形態種別 学術雑誌
査読 査読あり
標題 Axle charge effects on photoinduced electron transfer processes in rotaxanes containing porphyrin and [60]fullerene
執筆形態 共著
掲載誌名 Phys. Chem. Chem. Phys.
巻・号・頁 11(46),pp.10908-10915
著者・共著者 Hisahiro Sasabe, Atula S. D. Sandanayaka, Nobuhiro Kihara, Yoshio Furusho, Toshikazu Takata, Yasuyuki Araki, Osamu Ito
概要 Two rotaxanes contg. zinc porphyrin (ZnP) with crown ether and [60]fullerene (C60) with cationic and neutral axles are synthesized. The charge-transfer interaction is revealed by absorption spectra for the rotaxane with a short distance, but not for the rotaxane with a long distance, which strongly affects the rates and efficiencies of photoinduced electron-transfer and energy-transfer processes via the excited singlet states of the ZnP and C60 moieties and their triplet states, as revealed by the time-resolved fluorescence and absorption measurements. The rate of the charge recombination of the radical ion pair of the rotaxane with a neutral axle is slower than that of the rotaxane with a cationic axle, due to the loose structure of the former rotaxane, which results from the long distance between the C60 anion radical and the ZnP cation radical.
DOI 10.1039/b913966d
ISSN 1463-9076