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An Artificial Photosynthetic Antenna-Reaction Center Complex
Abstract
A model photosynthetic antenna consisting of four covalently linked zinc tetraarylporphyrins, (P ZP ) 3 −P ZC, has been joined to a free base porphyrin-fullerene artificial photosynthetic reaction center, P−C 60, to form a (P ZP ) 3 −P ZC −PC 60 hexad. As revealed by time-resolved absorption and emission studies, excitation of any peripheral zinc porphyrin moiety (P ZP ) in 2-methyltetrahydrofuran solution is followed by singlet−singlet energy transfer to the central zinc porphyrin to give (P ZP ) 3 − 1 P ZC −P−C 60 with a time constant of ∼50 ps. The excitation is passed on to the free base porphyrin in 240 ps to produce (P ZP ) 3 −P ZC − 1 P−C 60, which decays by electron transfer to the fullerene with a time constant of 3 ps. The (P ZP ) 3 −P ZC −P • + −C 60 • - charge-separated state thus formed has a lifetime of 1330 ps, and is generated with a quantum yield of 0.70 based on light absorbed by the zinc porphyrin antenna. The complex thus mimics the basic functions of natural photosynthetic antenna systems and reaction center complexes.
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Cites
Singular value decomposition and least squares solutions
Golub, G. H., & Reinsch, C. (1970) · Numerische Mathematik · doi:10.1007/bf02163027 · Cited by 2,929
Cited by
Fullerene–porphyrin architectures; photosynthetic antenna and reaction center models
Guldi, D. M. (2002) · Chemical Society Reviews · doi:10.1039/b106962b · Cited by 963
Linkers for anchoring sensitizers to semiconductor nanoparticles
Galoppini, E. (2004) · Coordination Chemistry Reviews · doi:10.1016/j.ccr.2004.03.016 · Cited by 417
Giant Multiporphyrin Arrays as Artificial Light-Harvesting Antennas
Imahori, H. (2004) · The Journal of Physical Chemistry B · doi:10.1021/jp038036b · Cited by 353
Xiao, S., Li, Y., Li, Y., Zhuang, J., Wang, N., Liu, H., Ning, B., Liu, Y., Lu, F., Fan, L., et al. (2004) · The Journal of Physical Chemistry B · doi:10.1021/jp0478413 · Cited by 64
Metadata
- Authors
- Kuciauskas, D., Liddell, P. A., Lin, S., Johnson, T. E., Weghorn, S. J., Lindsey, J. S., Moore, A. L., Moore, T. A., & Gust, D.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 1999-09-01
- Volume
- 121
- Issue
- 37
- Pages
- 8604-8614
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W2075134695
- Cited by
- 322
- References
- 1
- FWCI
- 26.30
- Type
- journal article
- Language
- en
- Open access
- closed
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- Kuciauskas, D., Liddell, P. A., Lin, S., Johnson, T. E., Weghorn, S. J., Lindsey, J. S., Moore, A. L., Moore, T. A., & Gust, D. (1999). An Artificial Photosynthetic Antenna-Reaction Center Complex. Journal of the American Chemical Society. https://doi.org/10.1021/ja991255j
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