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

Yonsei University
University of California at Santa Barbara
Korea Advanced Institute of Science and Technology
Kyoto University

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

12 Scopus citations

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
State	Published - 20 Mar 2006
Externally published	Yes

Keywords

Coupling energy matrix
Excitation energy hopping (EEH)
Exciton coupling
Exciton-exciton annihilation
Self-assembled porphyrin array
Transient absorption anisotropy (TAA)

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10.1016/j.jphotochem.2005.10.029

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@article{4a03d56873da432f9b2f846c7cbafc92,

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.",

keywords = "Coupling energy matrix, Excitation energy hopping (EEH), Exciton coupling, Exciton-exciton annihilation, Self-assembled porphyrin array, Transient absorption anisotropy (TAA)",

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",

year = "2006",

month = mar,

day = "20",

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

language = "English",

volume = "178",

pages = "130--139",

journal = "Journal of Photochemistry and Photobiology A: Chemistry",

issn = "1010-6030",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Excitation energy migration in a dodecameric porphyrin box

AU - Hwang, In Wook

AU - Yoon, Zin Seok

AU - Kim, Jiwon

AU - Kamada, Taisuke

AU - Ahn, Tae Kyu

AU - Aratani, Naoki

AU - Osuka, Atsuhiro

AU - Kim, Dongho

PY - 2006/3/20

Y1 - 2006/3/20

N2 - 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.

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.

KW - Coupling energy matrix

KW - Excitation energy hopping (EEH)

KW - Exciton coupling

KW - Exciton-exciton annihilation

KW - Self-assembled porphyrin array

KW - Transient absorption anisotropy (TAA)

UR - https://www.scopus.com/pages/publications/33144456155

U2 - 10.1016/j.jphotochem.2005.10.029

DO - 10.1016/j.jphotochem.2005.10.029

M3 - Article

AN - SCOPUS:33144456155

SN - 1010-6030

VL - 178

SP - 130

EP - 139

JO - Journal of Photochemistry and Photobiology A: Chemistry

JF - Journal of Photochemistry and Photobiology A: Chemistry

IS - 2-3 SPEC. ISS.

ER -

Excitation energy migration in a dodecameric porphyrin box

Abstract

Keywords

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