A full multiple scattering model for the analysis of time-resolved X-ray difference absorption spectra

Maurizio Benfatto; Stefano Della Longa; Keisuke Hatada; Kuniko Hayakawa; Wojciech Gawelda; Christian Bressler; Majed Chergui

doi:10.1021/jp063326o

A full multiple scattering model for the analysis of time-resolved X-ray difference absorption spectra

Maurizio Benfatto, Stefano Della Longa, Keisuke Hatada, Kuniko Hayakawa, Wojciech Gawelda, Christian Bressler, Majed Chergui^*

^*Corresponding author for this work

Department of Physics

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

39 Scopus citations

Abstract

A full multiple theoretical model (MXAN) is applied to fit picosecond difference X-ray absorption spectra at the ruthenium L₃ edge upon photoexcitation of aqueous [Ru^II(bpy)₃]²⁺. We show that fitting difference spectra allows an increase in sensitivity, such that slight structural changes can be retrieved, which are not detected in fitting full spectra. The Ru-N bond distances of the excited complex in the ³MLCT state are in good agreement with recently published values. The implementation of the present approach to L-edge spectra and its high sensitivity opens opportunities for its extension to a large class of experiments where difference X-ray absorption spectra are recorded.

Original language	English
Pages (from-to)	14035-14039
Number of pages	5
Journal	Journal of Physical Chemistry B
Volume	110
Issue number	29
DOIs	https://doi.org/10.1021/jp063326o
State	Published - 2006/07/27

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Surfaces, Coatings and Films
Materials Chemistry

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title = "A full multiple scattering model for the analysis of time-resolved X-ray difference absorption spectra",

abstract = "A full multiple theoretical model (MXAN) is applied to fit picosecond difference X-ray absorption spectra at the ruthenium L3 edge upon photoexcitation of aqueous [RuII(bpy)3]2+. We show that fitting difference spectra allows an increase in sensitivity, such that slight structural changes can be retrieved, which are not detected in fitting full spectra. The Ru-N bond distances of the excited complex in the 3MLCT state are in good agreement with recently published values. The implementation of the present approach to L-edge spectra and its high sensitivity opens opportunities for its extension to a large class of experiments where difference X-ray absorption spectra are recorded.",

author = "Maurizio Benfatto and Longa, {Stefano Della} and Keisuke Hatada and Kuniko Hayakawa and Wojciech Gawelda and Christian Bressler and Majed Chergui",

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AU - Benfatto, Maurizio

AU - Longa, Stefano Della

AU - Hatada, Keisuke

AU - Hayakawa, Kuniko

AU - Gawelda, Wojciech

AU - Bressler, Christian

AU - Chergui, Majed

PY - 2006/7/27

Y1 - 2006/7/27

N2 - A full multiple theoretical model (MXAN) is applied to fit picosecond difference X-ray absorption spectra at the ruthenium L3 edge upon photoexcitation of aqueous [RuII(bpy)3]2+. We show that fitting difference spectra allows an increase in sensitivity, such that slight structural changes can be retrieved, which are not detected in fitting full spectra. The Ru-N bond distances of the excited complex in the 3MLCT state are in good agreement with recently published values. The implementation of the present approach to L-edge spectra and its high sensitivity opens opportunities for its extension to a large class of experiments where difference X-ray absorption spectra are recorded.

AB - A full multiple theoretical model (MXAN) is applied to fit picosecond difference X-ray absorption spectra at the ruthenium L3 edge upon photoexcitation of aqueous [RuII(bpy)3]2+. We show that fitting difference spectra allows an increase in sensitivity, such that slight structural changes can be retrieved, which are not detected in fitting full spectra. The Ru-N bond distances of the excited complex in the 3MLCT state are in good agreement with recently published values. The implementation of the present approach to L-edge spectra and its high sensitivity opens opportunities for its extension to a large class of experiments where difference X-ray absorption spectra are recorded.

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SN - 1520-6106

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JO - Journal of Physical Chemistry B

JF - Journal of Physical Chemistry B

IS - 29

ER -

A full multiple scattering model for the analysis of time-resolved X-ray difference absorption spectra

Abstract

ASJC Scopus subject areas

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