Transient absorption study of peridinin and peridinin-chlorophyll a-protein after two-photon excitation

Patricia A. Linden; Jörg Zimmermann; Tobias Brixner; Nancy E. Holt; Harsha M. Vaswani; Roger G. Hiller; Graham R. Fleming

doi:10.1021/jp031331b

Transient absorption study of peridinin and peridinin-chlorophyll a-protein after two-photon excitation

Patricia A. Linden, Jörg Zimmermann, Tobias Brixner, Nancy E. Holt, Harsha M. Vaswani, Roger G. Hiller, Graham R. Fleming^*

^*Corresponding author for this work

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Abstract

Two-photon excited pump-probe spectroscopy was carried out on the peridinin-chlorophyll a-protein complex (PCP) and on the peridinin molecule in methanol solution. Our data are consistent with earlier two-photon fluorescence excitation spectra ^1,2 and lead to the conclusion that, for peridinin in methanol solution, a separate two-photon-allowed transition exists just to the red of the strongly allowed S ₀ - S ₂(B _u ⁺) band. In the PCP complex, two-photon excitation at 1150 nm can also be interpreted as preparing a new state. In both cases, the new state is most likely the S ₁(A _g ^-) state. It is not yet possible to conclude experimentally whether peridinin possesses a single low lying state with solvent dependent properties or two distinct states, the A _g ^- and the charge transfer states.

Original language	English
Pages (from-to)	10340-10345
Number of pages	6
Journal	Journal of Physical Chemistry B
Volume	108
Issue number	29
DOIs	https://doi.org/10.1021/jp031331b
Publication status	Published - 22 Jul 2004

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title = "Transient absorption study of peridinin and peridinin-chlorophyll a-protein after two-photon excitation",

abstract = "Two-photon excited pump-probe spectroscopy was carried out on the peridinin-chlorophyll a-protein complex (PCP) and on the peridinin molecule in methanol solution. Our data are consistent with earlier two-photon fluorescence excitation spectra 1,2 and lead to the conclusion that, for peridinin in methanol solution, a separate two-photon-allowed transition exists just to the red of the strongly allowed S 0 - S 2(B u +) band. In the PCP complex, two-photon excitation at 1150 nm can also be interpreted as preparing a new state. In both cases, the new state is most likely the S 1(A g -) state. It is not yet possible to conclude experimentally whether peridinin possesses a single low lying state with solvent dependent properties or two distinct states, the A g - and the charge transfer states.",

author = "Linden, {Patricia A.} and J{\"o}rg Zimmermann and Tobias Brixner and Holt, {Nancy E.} and Vaswani, {Harsha M.} and Hiller, {Roger G.} and Fleming, {Graham R.}",

year = "2004",

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doi = "10.1021/jp031331b",

language = "English",

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TY - JOUR

T1 - Transient absorption study of peridinin and peridinin-chlorophyll a-protein after two-photon excitation

AU - Linden, Patricia A.

AU - Zimmermann, Jörg

AU - Brixner, Tobias

AU - Holt, Nancy E.

AU - Vaswani, Harsha M.

AU - Hiller, Roger G.

AU - Fleming, Graham R.

PY - 2004/7/22

Y1 - 2004/7/22

N2 - Two-photon excited pump-probe spectroscopy was carried out on the peridinin-chlorophyll a-protein complex (PCP) and on the peridinin molecule in methanol solution. Our data are consistent with earlier two-photon fluorescence excitation spectra 1,2 and lead to the conclusion that, for peridinin in methanol solution, a separate two-photon-allowed transition exists just to the red of the strongly allowed S 0 - S 2(B u +) band. In the PCP complex, two-photon excitation at 1150 nm can also be interpreted as preparing a new state. In both cases, the new state is most likely the S 1(A g -) state. It is not yet possible to conclude experimentally whether peridinin possesses a single low lying state with solvent dependent properties or two distinct states, the A g - and the charge transfer states.

AB - Two-photon excited pump-probe spectroscopy was carried out on the peridinin-chlorophyll a-protein complex (PCP) and on the peridinin molecule in methanol solution. Our data are consistent with earlier two-photon fluorescence excitation spectra 1,2 and lead to the conclusion that, for peridinin in methanol solution, a separate two-photon-allowed transition exists just to the red of the strongly allowed S 0 - S 2(B u +) band. In the PCP complex, two-photon excitation at 1150 nm can also be interpreted as preparing a new state. In both cases, the new state is most likely the S 1(A g -) state. It is not yet possible to conclude experimentally whether peridinin possesses a single low lying state with solvent dependent properties or two distinct states, the A g - and the charge transfer states.

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U2 - 10.1021/jp031331b

DO - 10.1021/jp031331b

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JO - Journal of Physical Chemistry B

JF - Journal of Physical Chemistry B

IS - 29

ER -

Transient absorption study of peridinin and peridinin-chlorophyll a-protein after two-photon excitation

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