Sub-picosecond photoinduced electron transfer in water-soluble porphyrin dimers

F. J. Vergeldt; R. B M Koehorst; T. J. Schaafsma; J. C. Lambry; J. L. Martin; D. G. Johnson; Michael R Wasielewski

doi:10.1016/0009-2614(91)80112-B

Sub-picosecond photoinduced electron transfer in water-soluble porphyrin dimers

F. J. Vergeldt, R. B M Koehorst, T. J. Schaafsma, J. C. Lambry, J. L. Martin, D. G. Johnson, Michael R Wasielewski

Northwestern University

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

51 Citations (Scopus)

Abstract

Picosecond as well as femtosecond transient absorption measurements have been performed on eight water-soluble heterodimers consisting of combinations of oppositely charged free base and metal porphyrins which have been electrochemically characterized. The ultrafast non-exponential absorption increase, attributed to solvent-controlled, intradimer charge separation, is energy-gap independent. By contrast, the much slower charge recombination is energy-gap dependent.

Original language	English
Pages (from-to)	107-113
Number of pages	7
Journal	Chemical Physics Letters
Volume	182
Issue number	2
DOIs	https://doi.org/10.1016/0009-2614(91)80112-B
Publication status	Published - Jul 26 1991

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Spectroscopy
Condensed Matter Physics
Atomic and Molecular Physics, and Optics
Surfaces and Interfaces

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10.1016/0009-2614(91)80112-B

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abstract = "Picosecond as well as femtosecond transient absorption measurements have been performed on eight water-soluble heterodimers consisting of combinations of oppositely charged free base and metal porphyrins which have been electrochemically characterized. The ultrafast non-exponential absorption increase, attributed to solvent-controlled, intradimer charge separation, is energy-gap independent. By contrast, the much slower charge recombination is energy-gap dependent.",

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AU - Vergeldt, F. J.

AU - Koehorst, R. B M

AU - Schaafsma, T. J.

AU - Lambry, J. C.

AU - Martin, J. L.

AU - Johnson, D. G.

AU - Wasielewski, Michael R

PY - 1991/7/26

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N2 - Picosecond as well as femtosecond transient absorption measurements have been performed on eight water-soluble heterodimers consisting of combinations of oppositely charged free base and metal porphyrins which have been electrochemically characterized. The ultrafast non-exponential absorption increase, attributed to solvent-controlled, intradimer charge separation, is energy-gap independent. By contrast, the much slower charge recombination is energy-gap dependent.

AB - Picosecond as well as femtosecond transient absorption measurements have been performed on eight water-soluble heterodimers consisting of combinations of oppositely charged free base and metal porphyrins which have been electrochemically characterized. The ultrafast non-exponential absorption increase, attributed to solvent-controlled, intradimer charge separation, is energy-gap independent. By contrast, the much slower charge recombination is energy-gap dependent.

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