Excitation energy migration in a dodecameric porphyrin box

In Wook Hwang; Zin Seok Yoon; Jiwon Kim; Taisuke Kamada; Tae Kyu Ahn; Naoki Aratani; Atsuhiro Osuka; Dongho Kim

doi:10.1016/j.jphotochem.2005.10.029

Excitation energy migration in a dodecameric porphyrin box

In Wook Hwang, Zin Seok Yoon, Jiwon Kim, Taisuke Kamada, Tae Kyu Ahn, Naoki Aratani, Atsuhiro Osuka, Dongho Kim

Research output: Contribution to journal › Article › peer-review

12 Citations (Scopus)

Abstract

The excitation energy hopping (EEH) in a dodecameric porphyrin box (TB2) prepared by self-assembly of four meso-meso linked zinc(II) triporphyrin (T2)s is explored by picosecond fluorescence and femtosecond transient absorption (TA) spectroscopy. The exciton-exciton annihilation and anisotropy depolarization observed in both fluorescence and TA provide a consistent EEH rate, i.e. 300 ± 20 ps^-1, assuming Förster energy hopping among four T2 units in TB2. The observed energy hopping time 300 ± 20 ps^-1 is slower than the previous 98 ± 3 ps^-1 of B2 (an octameric porphyrin box), even though the size of hopping unit is larger in TB2.

Original language	English
Pages (from-to)	130-139
Number of pages	10
Journal	Journal of Photochemistry and Photobiology A: Chemistry
Volume	178
Issue number	2-3 SPEC. ISS.
DOIs	https://doi.org/10.1016/j.jphotochem.2005.10.029
Publication status	Published - 2006 Mar 20

Bibliographical note

Funding Information:
The work at Yonsei was financially supported by the National Creative Research Initiatives Program of the Ministry of Science and Technology of Korea to D. Kim. The work at Kyoto was partly supported by Grant-in-Aid from the Ministry of Education, Culture, Sports, Science and Technology, Japan and 21st Century COE on Kyoto University Alliance for Chemistry to A. Osuka. The authors greatly thank Prof. Eric Vauthey (University of Geneva, Genève, Switzerland) for his kind comments.

All Science Journal Classification (ASJC) codes

Chemistry(all)
Chemical Engineering(all)
Physics and Astronomy(all)

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10.1016/j.jphotochem.2005.10.029

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title = "Excitation energy migration in a dodecameric porphyrin box",

abstract = "The excitation energy hopping (EEH) in a dodecameric porphyrin box (TB2) prepared by self-assembly of four meso-meso linked zinc(II) triporphyrin (T2)s is explored by picosecond fluorescence and femtosecond transient absorption (TA) spectroscopy. The exciton-exciton annihilation and anisotropy depolarization observed in both fluorescence and TA provide a consistent EEH rate, i.e. 300 ± 20 ps-1, assuming F{\"o}rster energy hopping among four T2 units in TB2. The observed energy hopping time 300 ± 20 ps-1 is slower than the previous 98 ± 3 ps-1 of B2 (an octameric porphyrin box), even though the size of hopping unit is larger in TB2.",

author = "Hwang, {In Wook} and Yoon, {Zin Seok} and Jiwon Kim and Taisuke Kamada and Ahn, {Tae Kyu} and Naoki Aratani and Atsuhiro Osuka and Dongho Kim",

note = "Funding Information: The work at Yonsei was financially supported by the National Creative Research Initiatives Program of the Ministry of Science and Technology of Korea to D. Kim. The work at Kyoto was partly supported by Grant-in-Aid from the Ministry of Education, Culture, Sports, Science and Technology, Japan and 21st Century COE on Kyoto University Alliance for Chemistry to A. Osuka. The authors greatly thank Prof. Eric Vauthey (University of Geneva, Gen{\`e}ve, Switzerland) for his kind comments.",

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doi = "10.1016/j.jphotochem.2005.10.029",

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AU - Yoon, Zin Seok

AU - Kim, Jiwon

AU - Kamada, Taisuke

AU - Ahn, Tae Kyu

AU - Aratani, Naoki

AU - Osuka, Atsuhiro

AU - Kim, Dongho

N1 - Funding Information: The work at Yonsei was financially supported by the National Creative Research Initiatives Program of the Ministry of Science and Technology of Korea to D. Kim. The work at Kyoto was partly supported by Grant-in-Aid from the Ministry of Education, Culture, Sports, Science and Technology, Japan and 21st Century COE on Kyoto University Alliance for Chemistry to A. Osuka. The authors greatly thank Prof. Eric Vauthey (University of Geneva, Genève, Switzerland) for his kind comments.

PY - 2006/3/20

Y1 - 2006/3/20

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AB - The excitation energy hopping (EEH) in a dodecameric porphyrin box (TB2) prepared by self-assembly of four meso-meso linked zinc(II) triporphyrin (T2)s is explored by picosecond fluorescence and femtosecond transient absorption (TA) spectroscopy. The exciton-exciton annihilation and anisotropy depolarization observed in both fluorescence and TA provide a consistent EEH rate, i.e. 300 ± 20 ps-1, assuming Förster energy hopping among four T2 units in TB2. The observed energy hopping time 300 ± 20 ps-1 is slower than the previous 98 ± 3 ps-1 of B2 (an octameric porphyrin box), even though the size of hopping unit is larger in TB2.

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Excitation energy migration in a dodecameric porphyrin box

Abstract

Bibliographical note

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