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Hwang, In-Wook,Park, Mira,Ahn, Tae Kyu,Yoon, Zin Seok,Ko, Dah Mee,Kim, Dongho,Ito, Fuyuki,Ishibashi, Yukihide,Khan, Sazzadur R.,Nagasawa, Yutaka,Miyasaka, Hiroshi,Ikeda, Chusaku,Takahashi, Ryoichi,Oga WILEY-VCH Verlag 2005 Chemistry Vol.11 No.12
<P>The excitation-energy-hopping (EEH) times within two-dimensional cyclic zinc(II)–porphyrin arrays 5 and 6, which were prepared by intermolecular coordination and ring-closing metathesis reaction of olefins, were deduced by modeling the EEH process based on the anisotropy depolarization as well as the exciton–exciton annihilation dynamics. Assuming the number of energy-hopping sites N=5 and 6, the two different experimental observables, that is, anisotropy depolarization and exciton–excition annihilation times, consistently give the EEH times of 8.0±0.5 and 5.3±0.6 ps through the 1,3-phenylene linkages of 5 and 6, respectively. Accordingly, the self-assembled cyclic porphyrin arrays have proven to be well-defined two-dimensional models for natural light-harvesting complexes.</P> <B>Graphic Abstract</B> <P>Energy-hopping systems: The excitation-energy-hopping (EEH) times within two-dimensional cyclic zinc(II)–porphyrin arrays (illustrated here) were deduced by modeling the EEH process based on the anisotropy depolarization as well as the exciton–exciton annihilation dynamics. <img src='wiley_img/09476539-2005-11-12-CHEM200500069-content.gif' alt='wiley_img/09476539-2005-11-12-CHEM200500069-content'> </P>
Polarimetric Observation of (3200) Phaethon, in Preparation for the Upcoming DESTINY+ Space Mission
Jooyeon Geem,Masateru Ishiguro,Jun Takahashi,Hiroshi Akitaya,Koji S. Kawabata,Tatsuya Nakaoka,Ryo Imazawa,Fumiki Mori,Daisuke Kuroda,Sunao Hasegawa,Fumi Yoshida,Ko Ishibashi,Tomoko Arai,Tomohiko Sekig 한국천문학회 2022 天文學會報 Vol.47 No.1