研究者情報 | 神奈川大学

キハラ　ノブヒロ Kihara Nobuhiro 木原　伸浩所属神奈川大学理学部理学科神奈川大学大学院理学研究科理学専攻（化学領域）職種教授
言語種別	英語
発行・発表の年月	2010/04
形態種別	学術雑誌
査読	査読あり
標題	Axle Length Effect on Photoinduced Electron Transfer in Triad Rotaxane with Porphyrin, [60]Fullerene, and Triphenylamine
執筆形態	共著
掲載誌名	J. Phys. Chem. A
巻・号・頁	114(16),pp.5242-5250
著者・共著者	Atula S. D. Sandanayaka, Hisahiro Sasabe, Yasuyuki Araki, Nobuhiro Kihara, Yoshio Furusho, Toshikazu Takata, Osamu Ito
概要	In this rotaxane, zinc porphyrin (ZnP) with a crown-ether necklace is employed as a photosensitized electron donor; through the crown-ether, a short axle with C60 and triphenylamine (TPA) at both terminals is penetrating as an electron acceptor and a hole-shift, resp. (abbreviated as (ZnP;C60-(AS)-TPA)Rot). The time-resolved fluorescence and transient absorption measurements reveal that the through-space electron-transfer processes take place via the excited states of the ZnP unit to the spatially arranged C60 moiety, giving the radical ion pair (ZnP·+;C60·--(AS)-TPA)Rot in polar solvents. Consecutively, (ZnP;C60·--(AS)-TPA·+)Rot is also generated by the through-space hole-shift between ZnP and TPA, in addn. to the through-bond charge sepn. via the excited state of the C60 moiety. Both radial ion pairs have lifetimes of 320-420 ns, which are longer than those of the previously reported similar rotaxane with cationic longer axle (150-170 ns).
DOI	10.1021/jp911177q
ISSN	1089-5639