Dynamics of charge separation in the excited-state chemistry of protochlorophyllide

Benjamin Dietzek; Stefanie Tschierlei; Robert Hanf; Sonja Seidel; Arkady Yartsev; Michael Schmitt; Gudrun Hermann; Juergen Popp

doi:10.1016/j.cplett.2010.04.027

Dynamics of charge separation in the excited-state chemistry of protochlorophyllide

Benjamin Dietzek, Stefanie Tschierlei, Robert Hanf, Sonja Seidel, Arkady Yartsev, Michael Schmitt, Gudrun Hermann, Juergen Popp

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Abstract

In this study the excited-state dynamics of protochlorophyllide a (PChlide), the substrate of the enzyme protochlorophyllide oxidoreductase, was examined by means of time-resolved absorption anisotropy and magic-angle measurements. The solvent polarity dependent anisotropy data provide strong evidence for the existence of an excited-state with charge-transfer character. A solvent dependency is also observed in the magic-angle kinetics. In a nonpolar environment wave packet oscillations are monitored while they are quenched in a polar solvent. These results show that the excited-state relaxations of PChlide are determined by the nature of the solvent environment. The implications of these findings are discussed with respect to the enzyme catalysed reaction. (C) 2010 Elsevier B. V. All rights reserved.

Original language	English
Pages (from-to)	157-163
Journal	Chemical Physics Letters
Volume	492
Issue number	1-3
DOIs	https://doi.org/10.1016/j.cplett.2010.04.027
Publication status	Published - 2010

Bibliographical note

The information about affiliations in this record was updated in December 2015.
The record was previously connected to the following departments: Chemical Physics (S) (011001060)

Subject classification (UKÄ)

Atom and Molecular Physics and Optics

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10.1016/j.cplett.2010.04.027

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title = "Dynamics of charge separation in the excited-state chemistry of protochlorophyllide",

abstract = "In this study the excited-state dynamics of protochlorophyllide a (PChlide), the substrate of the enzyme protochlorophyllide oxidoreductase, was examined by means of time-resolved absorption anisotropy and magic-angle measurements. The solvent polarity dependent anisotropy data provide strong evidence for the existence of an excited-state with charge-transfer character. A solvent dependency is also observed in the magic-angle kinetics. In a nonpolar environment wave packet oscillations are monitored while they are quenched in a polar solvent. These results show that the excited-state relaxations of PChlide are determined by the nature of the solvent environment. The implications of these findings are discussed with respect to the enzyme catalysed reaction. (C) 2010 Elsevier B. V. All rights reserved.",

author = "Benjamin Dietzek and Stefanie Tschierlei and Robert Hanf and Sonja Seidel and Arkady Yartsev and Michael Schmitt and Gudrun Hermann and Juergen Popp",

note = "The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Chemical Physics (S) (011001060)",

year = "2010",

doi = "10.1016/j.cplett.2010.04.027",

language = "English",

volume = "492",

pages = "157--163",

journal = "Chemical Physics Letters",

issn = "0009-2614",

publisher = "Elsevier",

number = "1-3",

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TY - JOUR

T1 - Dynamics of charge separation in the excited-state chemistry of protochlorophyllide

AU - Dietzek, Benjamin

AU - Tschierlei, Stefanie

AU - Hanf, Robert

AU - Seidel, Sonja

AU - Yartsev, Arkady

AU - Schmitt, Michael

AU - Hermann, Gudrun

AU - Popp, Juergen

N1 - The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Chemical Physics (S) (011001060)

PY - 2010

Y1 - 2010

N2 - In this study the excited-state dynamics of protochlorophyllide a (PChlide), the substrate of the enzyme protochlorophyllide oxidoreductase, was examined by means of time-resolved absorption anisotropy and magic-angle measurements. The solvent polarity dependent anisotropy data provide strong evidence for the existence of an excited-state with charge-transfer character. A solvent dependency is also observed in the magic-angle kinetics. In a nonpolar environment wave packet oscillations are monitored while they are quenched in a polar solvent. These results show that the excited-state relaxations of PChlide are determined by the nature of the solvent environment. The implications of these findings are discussed with respect to the enzyme catalysed reaction. (C) 2010 Elsevier B. V. All rights reserved.

AB - In this study the excited-state dynamics of protochlorophyllide a (PChlide), the substrate of the enzyme protochlorophyllide oxidoreductase, was examined by means of time-resolved absorption anisotropy and magic-angle measurements. The solvent polarity dependent anisotropy data provide strong evidence for the existence of an excited-state with charge-transfer character. A solvent dependency is also observed in the magic-angle kinetics. In a nonpolar environment wave packet oscillations are monitored while they are quenched in a polar solvent. These results show that the excited-state relaxations of PChlide are determined by the nature of the solvent environment. The implications of these findings are discussed with respect to the enzyme catalysed reaction. (C) 2010 Elsevier B. V. All rights reserved.

U2 - 10.1016/j.cplett.2010.04.027

DO - 10.1016/j.cplett.2010.04.027

M3 - Article

SN - 0009-2614

VL - 492

SP - 157

EP - 163

JO - Chemical Physics Letters

JF - Chemical Physics Letters

IS - 1-3

ER -

Dynamics of charge separation in the excited-state chemistry of protochlorophyllide

Abstract

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