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	2005
形態種別	学術雑誌
査読	査読あり
標題	Photoinduced electron- and energy-transfer processes of [60]fullerene covalently bonded with one and two zinc porphyrin(s): Effects of coordination of pyridine and diazabicyclooctane to Zn atom
執筆形態	共著
掲載誌名	J. Mater. Chem.
巻・号・頁	15(23),pp.2276-2287
著者・共著者	Atula S. D. Sandanayaka, Kei-ichiro Ikeshita, Yasuyuki Araki, Nobuhiro Kihara, Yoshio Furusho, Toshikazu Takata, and Osamu Ito
概要	C60-zinc porphyrin (ZnP) dyad (ZnP-C60) and triad (ZnP-C60-ZnP) were synthesized. Upon excitation of the ZnP moiety, charge sepn. via an excited singlet state of ZnP takes place competitively with energy transfer to C60 generating the excited singlet state of C60, from which charge-sepd. states (ZnP·+-C60·- and ZnP·+-C60·--ZnP) are also generated in polar solvents. Rates and efficiencies of energy transfer and charge sepn. for the triad are higher than those of the dyad. The generated charge-sepd. species recombine with lifetimes in the rage of 240-330 ns in polar solvents such as DMF, PhCN, and THF for both dyad and triad. In o-dichlorobenzene, although the lifetimes of charge-sepd. states are very short (<20 ns), coordination of DABCO and pyridine to ZnP in the dyad and triad producing relatively stable coordinated complexes gives rise to prolongation of the charge-sepd. states up to 460 ns.
DOI	10.1039/b500030k
ISSN	0959-9428