Reaction dynamics studied via femtosecond X-ray liquidography at X-ray free-electron lasers

EH Choi, Y Lee, J Heo, H Ihee - Chemical Science, 2022 - pubs.rsc.org
X-ray free-electron lasers (XFELs) provide femtosecond X-ray pulses suitable for pump–
probe time-resolved studies with a femtosecond time resolution. Since the advent of the first …

Structural dynamics of proteins explored via time-resolved x-ray liquidography

Y Lee, H Lee, H Ihee - Chemical Physics Reviews, 2022 - pubs.aip.org
The structure of a protein is closely related to its biological function. In this regard, structural
changes, as well as static structures, have been scrutinized as essential elements in …

Solvent-dependent structural dynamics in the ultrafast photodissociation reaction of triiodide observed with time-resolved x-ray solution scattering

A Nimmrich, MR Panman, O Berntsson… - Journal of the …, 2023 - ACS Publications
Resolving the structural dynamics of bond breaking, bond formation, and solvation is
required for a deeper understanding of solution-phase chemical reactions. In this work, we …

Determining the charge distribution and the direction of bond cleavage with femtosecond anisotropic x-ray liquidography

J Heo, JG Kim, EH Choi, H Ki, DS Ahn, J Kim… - Nature …, 2022 - nature.com
Energy, structure, and charge are fundamental quantities characterizing a molecule.
Whereas the energy flow and structure change in chemical reactions are experimentally …

[HTML][HTML] Photodissociation of aqueous I3− observed with liquid-phase ultrafast mega-electron-volt electron diffraction

K Ledbetter, E Biasin, JPF Nunes, M Centurion… - Structural …, 2020 - pubs.aip.org
Developing femtosecond resolution methods for directly observing structural dynamics is
critical to understanding complex photochemical reaction mechanisms in solution. We have …

Tracking reaction dynamics in solution by pump–probe X-ray absorption spectroscopy and X-ray liquidography (solution scattering)

J Kim, KH Kim, KY Oang, JH Lee, K Hong… - Chemical …, 2016 - pubs.rsc.org
Characterization of transient molecular structures formed during chemical and biological
processes is essential for understanding their mechanisms and functions. Over the last …

[HTML][HTML] Topical Review: Molecular reaction and solvation visualized by time-resolved X-ray solution scattering: Structure, dynamics, and their solvent dependence

K Hwan Kim, J Kim, J Hyuk Lee, H Ihee - Structural Dynamics, 2014 - pubs.aip.org
Time-resolved X-ray solution scattering is sensitive to global molecular structure and can
track the dynamics of chemical reactions. In this article, we review our recent studies on …

The carbon–iodine bond cleavage and isomerization of iodoform visualized with femtosecond X-ray liquidography

Y Cha, H Ki, D Im, Y Lee, S Lee, J Kim, JH Lee… - Chemical …, 2024 - pubs.rsc.org
Iodoform (CHI3) has garnered significant attention for its unique ability to induce photo-
cyclopropanation of olefins by releasing an iodine radical through C–I bond cleavage …

Probing the molecular structure of aqueous triiodide via X-ray photoelectron spectroscopy and correlated electron phenomena

MS Ahsan, V Kochetov, D Hein, SI Bokarev… - Physical Chemistry …, 2022 - pubs.rsc.org
Liquid-microjet-based X-ray photoelectron spectroscopy was applied to aqueous triiodide
solutions, I3−(aq.), to investigate the anion's valence-and core-level electronic structure …

[HTML][HTML] SVD-aided pseudo principal-component analysis: A new method to speed up and improve determination of the optimum kinetic model from time-resolved …

KY Oang, C Yang, S Muniyappan, J Kim, H Ihee - Structural Dynamics, 2017 - pubs.aip.org
Determination of the optimum kinetic model is an essential prerequisite for characterizing
dynamics and mechanism of a reaction. Here, we propose a simple method, termed as …