Abstract
The photophysical and spectroscopic properties of a series of bis-porphyrin compounds meso-meso-linked via oligothiophene bridges are reported. In particular the effects of the different bridges on the porphyrin properties as well as their ability to enhance energy transfer is investigated. The main findings are: a splitting of the degeneracy of the porphyrin Soret band transition with a lower energy transition aligned along the bridge, a dramatic decrease in triplet lifetime and the occurrence of "superexchange" as the main mechanism for mediating singlet-singlet energy transfer in the case where the bridge is a quaterthiophene. Our results show significant perturbations of the intrinsic porphyrin properties induced by the bridge, which are important for the function of porphyrin assemblies.
| Original language | English |
|---|---|
| Pages (from-to) | 828-834 |
| Number of pages | 7 |
| Journal | Photochemical and Photobiological Sciences |
| Volume | 5 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - 2006 |
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ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Cell Biology
- Biochemistry, Genetics and Molecular Biology(all)
- Biochemistry
- Biophysics
Cite this
Electronic interactions and energy transfer in oligothiophene-linked bis-porphyrins. / Wallin, Staffan; Hammarström, Leif; Blart, Errol; Odobel, Fabrice.
In: Photochemical and Photobiological Sciences, Vol. 5, No. 9, 2006, p. 828-834.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Electronic interactions and energy transfer in oligothiophene-linked bis-porphyrins
AU - Wallin, Staffan
AU - Hammarström, Leif
AU - Blart, Errol
AU - Odobel, Fabrice
PY - 2006
Y1 - 2006
N2 - The photophysical and spectroscopic properties of a series of bis-porphyrin compounds meso-meso-linked via oligothiophene bridges are reported. In particular the effects of the different bridges on the porphyrin properties as well as their ability to enhance energy transfer is investigated. The main findings are: a splitting of the degeneracy of the porphyrin Soret band transition with a lower energy transition aligned along the bridge, a dramatic decrease in triplet lifetime and the occurrence of "superexchange" as the main mechanism for mediating singlet-singlet energy transfer in the case where the bridge is a quaterthiophene. Our results show significant perturbations of the intrinsic porphyrin properties induced by the bridge, which are important for the function of porphyrin assemblies.
AB - The photophysical and spectroscopic properties of a series of bis-porphyrin compounds meso-meso-linked via oligothiophene bridges are reported. In particular the effects of the different bridges on the porphyrin properties as well as their ability to enhance energy transfer is investigated. The main findings are: a splitting of the degeneracy of the porphyrin Soret band transition with a lower energy transition aligned along the bridge, a dramatic decrease in triplet lifetime and the occurrence of "superexchange" as the main mechanism for mediating singlet-singlet energy transfer in the case where the bridge is a quaterthiophene. Our results show significant perturbations of the intrinsic porphyrin properties induced by the bridge, which are important for the function of porphyrin assemblies.
UR - http://www.scopus.com/inward/record.url?scp=33748195554&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33748195554&partnerID=8YFLogxK
U2 - 10.1039/b601092j
DO - 10.1039/b601092j
M3 - Article
VL - 5
SP - 828
EP - 834
JO - Photochemical and Photobiological Sciences
JF - Photochemical and Photobiological Sciences
SN - 1474-905X
IS - 9
ER -