TY - JOUR
T1 - Excitation-energy migration in self-assembled cyclic zinc(II)-porphyrin arrays
T2 - A close mimicry of a natural light-harvesting system
AU - Hwang, In Wook
AU - Park, Mira
AU - Ahn, Tae Kyu
AU - Yoon, Zin Seok
AU - Ko, Dah Mee
AU - Kim, Dongho
AU - Ito, Fuyuki
AU - Ishibashi, Yukihide
AU - Khan, Sazzadur R.
AU - Nagasawa, Yutaka
AU - Miyasaka, Hiroshi
AU - Ikeda, Chusaku
AU - Takahashi, Ryoichi
AU - Ogawa, Kazuya
AU - Satake, Akiharu
AU - Kobuke, Yoshiaki
PY - 2005/6/6
Y1 - 2005/6/6
N2 - 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±0.6ps 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.
AB - 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±0.6ps 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.
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U2 - 10.1002/chem.200500069
DO - 10.1002/chem.200500069
M3 - Article
C2 - 15827988
AN - SCOPUS:20444453367
SN - 0947-6539
VL - 11
SP - 3753
EP - 3761
JO - Chemistry - A European Journal
JF - Chemistry - A European Journal
IS - 12
ER -