Anisotropy enhanced X-ray scattering from solvated transition metal complexes

Elisa Biasin*, Tim B. van Driel, Gianluca Levi, Mads G. Laursen, Asmus O. Dohn, Asbjørn Moltke, Peter Vester, Frederik B. K. Hansen, Kasper S. Kjaer, Tobias Harlang, Robert Hartsock, Morten Christensen, Kelly J Gaffney, Niels E. Henriksen, Klaus B. Møller, Kristoffer Haldrup, Martin M. Nielsen

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

Time-resolved X-ray scattering patterns from photoexcited molecules in solution are in many cases anisotropic at the ultrafast time scales accessible at X-ray free-electron lasers (XFELs). This anisotropy arises from the interaction of a linearly polarized UV-Vis pump laser pulse with the sample, which induces anisotropic structural changes that can be captured by femtosecond X-ray pulses. In this work, a method for quantitative analysis of the anisotropic scattering signal arising from an ensemble of molecules is described, and it is demonstrated how its use can enhance the structural sensitivity of the time-resolved X-ray scattering experiment. This method is applied on time-resolved X-ray scattering patterns measured upon photoexcitation of a solvated di-platinum complex at an XFEL, and the key parameters involved are explored. It is shown that a combined analysis of the anisotropic and isotropic difference scattering signals in this experiment allows a more precise determination of the main photoinduced structural change in the solute, i.e. the change in Pt-Pt bond length, and yields more information on the excitation channels than the analysis of the isotropic scattering only. Finally, it is discussed how the anisotropic transient response of the solvent can enable the determination of key experimental parameters such as the instrument response function.
Original languageEnglish
JournalJournal of Synchrotron Radiation
Volume25
Issue number2
Pages (from-to)306-315
ISSN0909-0495
DOIs
Publication statusPublished - 2018

Keywords

  • XFEL
  • Anisotropic scattering
  • Molecular structure
  • Orientational selection
  • Time-resolved
  • Ultrafast

Cite this

Biasin, Elisa ; van Driel, Tim B. ; Levi, Gianluca ; Laursen, Mads G. ; Dohn, Asmus O. ; Moltke, Asbjørn ; Vester, Peter ; Hansen, Frederik B. K. ; Kjaer, Kasper S. ; Harlang, Tobias ; Hartsock, Robert ; Christensen, Morten ; Gaffney, Kelly J ; Henriksen, Niels E. ; Møller, Klaus B. ; Haldrup, Kristoffer ; Nielsen, Martin M. / Anisotropy enhanced X-ray scattering from solvated transition metal complexes. In: Journal of Synchrotron Radiation. 2018 ; Vol. 25, No. 2. pp. 306-315.
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title = "Anisotropy enhanced X-ray scattering from solvated transition metal complexes",
abstract = "Time-resolved X-ray scattering patterns from photoexcited molecules in solution are in many cases anisotropic at the ultrafast time scales accessible at X-ray free-electron lasers (XFELs). This anisotropy arises from the interaction of a linearly polarized UV-Vis pump laser pulse with the sample, which induces anisotropic structural changes that can be captured by femtosecond X-ray pulses. In this work, a method for quantitative analysis of the anisotropic scattering signal arising from an ensemble of molecules is described, and it is demonstrated how its use can enhance the structural sensitivity of the time-resolved X-ray scattering experiment. This method is applied on time-resolved X-ray scattering patterns measured upon photoexcitation of a solvated di-platinum complex at an XFEL, and the key parameters involved are explored. It is shown that a combined analysis of the anisotropic and isotropic difference scattering signals in this experiment allows a more precise determination of the main photoinduced structural change in the solute, i.e. the change in Pt-Pt bond length, and yields more information on the excitation channels than the analysis of the isotropic scattering only. Finally, it is discussed how the anisotropic transient response of the solvent can enable the determination of key experimental parameters such as the instrument response function.",
keywords = "XFEL, Anisotropic scattering, Molecular structure, Orientational selection, Time-resolved, Ultrafast",
author = "Elisa Biasin and {van Driel}, {Tim B.} and Gianluca Levi and Laursen, {Mads G.} and Dohn, {Asmus O.} and Asbj{\o}rn Moltke and Peter Vester and Hansen, {Frederik B. K.} and Kjaer, {Kasper S.} and Tobias Harlang and Robert Hartsock and Morten Christensen and Gaffney, {Kelly J} and Henriksen, {Niels E.} and M{\o}ller, {Klaus B.} and Kristoffer Haldrup and Nielsen, {Martin M.}",
year = "2018",
doi = "10.1107/S1600577517016964",
language = "English",
volume = "25",
pages = "306--315",
journal = "Journal of Synchrotron Radiation",
issn = "0909-0495",
publisher = "Wiley-Blackwell",
number = "2",

}

Biasin, E, van Driel, TB, Levi, G, Laursen, MG, Dohn, AO, Moltke, A, Vester, P, Hansen, FBK, Kjaer, KS, Harlang, T, Hartsock, R, Christensen, M, Gaffney, KJ, Henriksen, NE, Møller, KB, Haldrup, K & Nielsen, MM 2018, 'Anisotropy enhanced X-ray scattering from solvated transition metal complexes', Journal of Synchrotron Radiation, vol. 25, no. 2, pp. 306-315. https://doi.org/10.1107/S1600577517016964

Anisotropy enhanced X-ray scattering from solvated transition metal complexes. / Biasin, Elisa; van Driel, Tim B.; Levi, Gianluca; Laursen, Mads G.; Dohn, Asmus O.; Moltke, Asbjørn; Vester, Peter; Hansen, Frederik B. K.; Kjaer, Kasper S.; Harlang, Tobias ; Hartsock, Robert; Christensen, Morten; Gaffney, Kelly J; Henriksen, Niels E.; Møller, Klaus B.; Haldrup, Kristoffer; Nielsen, Martin M.

In: Journal of Synchrotron Radiation, Vol. 25, No. 2, 2018, p. 306-315.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Anisotropy enhanced X-ray scattering from solvated transition metal complexes

AU - Biasin, Elisa

AU - van Driel, Tim B.

AU - Levi, Gianluca

AU - Laursen, Mads G.

AU - Dohn, Asmus O.

AU - Moltke, Asbjørn

AU - Vester, Peter

AU - Hansen, Frederik B. K.

AU - Kjaer, Kasper S.

AU - Harlang, Tobias

AU - Hartsock, Robert

AU - Christensen, Morten

AU - Gaffney, Kelly J

AU - Henriksen, Niels E.

AU - Møller, Klaus B.

AU - Haldrup, Kristoffer

AU - Nielsen, Martin M.

PY - 2018

Y1 - 2018

N2 - Time-resolved X-ray scattering patterns from photoexcited molecules in solution are in many cases anisotropic at the ultrafast time scales accessible at X-ray free-electron lasers (XFELs). This anisotropy arises from the interaction of a linearly polarized UV-Vis pump laser pulse with the sample, which induces anisotropic structural changes that can be captured by femtosecond X-ray pulses. In this work, a method for quantitative analysis of the anisotropic scattering signal arising from an ensemble of molecules is described, and it is demonstrated how its use can enhance the structural sensitivity of the time-resolved X-ray scattering experiment. This method is applied on time-resolved X-ray scattering patterns measured upon photoexcitation of a solvated di-platinum complex at an XFEL, and the key parameters involved are explored. It is shown that a combined analysis of the anisotropic and isotropic difference scattering signals in this experiment allows a more precise determination of the main photoinduced structural change in the solute, i.e. the change in Pt-Pt bond length, and yields more information on the excitation channels than the analysis of the isotropic scattering only. Finally, it is discussed how the anisotropic transient response of the solvent can enable the determination of key experimental parameters such as the instrument response function.

AB - Time-resolved X-ray scattering patterns from photoexcited molecules in solution are in many cases anisotropic at the ultrafast time scales accessible at X-ray free-electron lasers (XFELs). This anisotropy arises from the interaction of a linearly polarized UV-Vis pump laser pulse with the sample, which induces anisotropic structural changes that can be captured by femtosecond X-ray pulses. In this work, a method for quantitative analysis of the anisotropic scattering signal arising from an ensemble of molecules is described, and it is demonstrated how its use can enhance the structural sensitivity of the time-resolved X-ray scattering experiment. This method is applied on time-resolved X-ray scattering patterns measured upon photoexcitation of a solvated di-platinum complex at an XFEL, and the key parameters involved are explored. It is shown that a combined analysis of the anisotropic and isotropic difference scattering signals in this experiment allows a more precise determination of the main photoinduced structural change in the solute, i.e. the change in Pt-Pt bond length, and yields more information on the excitation channels than the analysis of the isotropic scattering only. Finally, it is discussed how the anisotropic transient response of the solvent can enable the determination of key experimental parameters such as the instrument response function.

KW - XFEL

KW - Anisotropic scattering

KW - Molecular structure

KW - Orientational selection

KW - Time-resolved

KW - Ultrafast

U2 - 10.1107/S1600577517016964

DO - 10.1107/S1600577517016964

M3 - Journal article

C2 - 29488907

VL - 25

SP - 306

EP - 315

JO - Journal of Synchrotron Radiation

JF - Journal of Synchrotron Radiation

SN - 0909-0495

IS - 2

ER -