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 | |
| Publication status | Published - 2005 May 12 |
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All Science Journal Classification (ASJC) codes
- Physical and Theoretical Chemistry
- Surfaces, Coatings and Films
- Materials Chemistry
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Excitation energy migration in a dodecameric porphyrin wheel. / Hwang, In Wook; Ko, Dah Mee; Ahn, Tae Kyu; Yoon, Zin Seok; Kim, Dongho; Peng, Xiaobin; Aratani, Naoki; Osuka, Atsuhiro.
In: Journal of Physical Chemistry B, Vol. 109, No. 18, 12.05.2005, p. 8643-8651.Research output: Contribution to journal › Article
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.
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U2 - 10.1021/jp044274a
DO - 10.1021/jp044274a
M3 - Article
C2 - 16852023
AN - SCOPUS:19944394566
VL - 109
SP - 8643
EP - 8651
JO - Journal of Physical Chemistry B
JF - Journal of Physical Chemistry B
SN - 1520-6106
IS - 18
ER -