Excitation energy migration in a dodecameric porphyrin wheel

In Wook Hwang; Dah Mee Ko; Tae Kyu Ahn; Zin Seok Yoon; Dongho Kim; Xiaobin Peng; Naoki Aratani; Atsuhiro Osuka

doi:10.1021/jp044274a

Excitation energy migration in a dodecameric porphyrin wheel

In Wook Hwang
, Dah Mee Ko
, Tae Kyu Ahn
, Zin Seok Yoon
, Dongho Kim
, Xiaobin Peng
, Naoki Aratani
, Atsuhiro Osuka

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

37 Scopus citations

Abstract

Intramolecular excitation energy hopping (EEH) time within a dodecameric porphyrin wheel C6ZA, in which six meso-meso linked zinc(II) diporphyrin (Z2) subunits are bridged by 1,3-phenylene spacers, is deduced by a Förster energy hopping model based on S₁-S₁ exciton-exciton annihilation and anisotropy depolarization. Under the assumption that the energy hopping sites are six Z2 subunits, two different observables (e.g., exciton-exciton annihilation and anisotropy depolarization times) consistently give the EEH time of 4.0 ± 0.4 ps via 1,3-phenylene spacer of C6ZA, which is faster than 9.4 ps of linear 2Z2 (1,3-phenylene-linked zinc(II) tetraporphyrin). As a consequence, C6ZA serves as a well-defined two-dimensional model for a light-harvesting complex.

Original language	English
Pages (from-to)	8643-8651
Number of pages	9
Journal	Journal of Physical Chemistry B
Volume	109
Issue number	18
DOIs	https://doi.org/10.1021/jp044274a
State	Published - 12 May 2005
Externally published	Yes

Access to Document

10.1021/jp044274a

Cite this

@article{6046030e2c96471887e7b4615b76467d,

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

abstract = "Intramolecular excitation energy hopping (EEH) time within a dodecameric porphyrin wheel C6ZA, in which six meso-meso linked zinc(II) diporphyrin (Z2) subunits are bridged by 1,3-phenylene spacers, is deduced by a F{\"o}rster energy hopping model based on S1-S1 exciton-exciton annihilation and anisotropy depolarization. Under the assumption that the energy hopping sites are six Z2 subunits, two different observables (e.g., exciton-exciton annihilation and anisotropy depolarization times) consistently give the EEH time of 4.0 ± 0.4 ps via 1,3-phenylene spacer of C6ZA, which is faster than 9.4 ps of linear 2Z2 (1,3-phenylene-linked zinc(II) tetraporphyrin). As a consequence, C6ZA serves as a well-defined two-dimensional model for a light-harvesting complex.",

author = "Hwang, \{In Wook\} and Ko, \{Dah Mee\} and Ahn, \{Tae Kyu\} and Yoon, \{Zin Seok\} and Dongho Kim and Xiaobin Peng and Naoki Aratani and Atsuhiro Osuka",

year = "2005",

month = may,

day = "12",

doi = "10.1021/jp044274a",

language = "English",

volume = "109",

pages = "8643--8651",

journal = "Journal of Physical Chemistry B",

issn = "1520-6106",

publisher = "American Chemical Society",

number = "18",

}

TY - JOUR

T1 - Excitation energy migration in a dodecameric porphyrin wheel

AU - Hwang, In Wook

AU - Ko, Dah Mee

AU - Ahn, Tae Kyu

AU - Yoon, Zin Seok

AU - Kim, Dongho

AU - Peng, Xiaobin

AU - Aratani, Naoki

AU - Osuka, Atsuhiro

PY - 2005/5/12

Y1 - 2005/5/12

N2 - Intramolecular excitation energy hopping (EEH) time within a dodecameric porphyrin wheel C6ZA, in which six meso-meso linked zinc(II) diporphyrin (Z2) subunits are bridged by 1,3-phenylene spacers, is deduced by a Förster energy hopping model based on S1-S1 exciton-exciton annihilation and anisotropy depolarization. Under the assumption that the energy hopping sites are six Z2 subunits, two different observables (e.g., exciton-exciton annihilation and anisotropy depolarization times) consistently give the EEH time of 4.0 ± 0.4 ps via 1,3-phenylene spacer of C6ZA, which is faster than 9.4 ps of linear 2Z2 (1,3-phenylene-linked zinc(II) tetraporphyrin). As a consequence, C6ZA serves as a well-defined two-dimensional model for a light-harvesting complex.

AB - Intramolecular excitation energy hopping (EEH) time within a dodecameric porphyrin wheel C6ZA, in which six meso-meso linked zinc(II) diporphyrin (Z2) subunits are bridged by 1,3-phenylene spacers, is deduced by a Förster energy hopping model based on S1-S1 exciton-exciton annihilation and anisotropy depolarization. Under the assumption that the energy hopping sites are six Z2 subunits, two different observables (e.g., exciton-exciton annihilation and anisotropy depolarization times) consistently give the EEH time of 4.0 ± 0.4 ps via 1,3-phenylene spacer of C6ZA, which is faster than 9.4 ps of linear 2Z2 (1,3-phenylene-linked zinc(II) tetraporphyrin). As a consequence, C6ZA serves as a well-defined two-dimensional model for a light-harvesting complex.

UR - https://www.scopus.com/pages/publications/19944394566

U2 - 10.1021/jp044274a

DO - 10.1021/jp044274a

M3 - Article

AN - SCOPUS:19944394566

SN - 1520-6106

VL - 109

SP - 8643

EP - 8651

JO - Journal of Physical Chemistry B

JF - Journal of Physical Chemistry B

IS - 18

ER -

Excitation energy migration in a dodecameric porphyrin wheel

Abstract

Access to Document

Other files and links

Fingerprint

Cite this