I. Unger
YOU?
Author Swipe
View article: Site- and Energy-Selective Low-Energy Electron Emission by X-rays in the Aqueous Phase
Site- and Energy-Selective Low-Energy Electron Emission by X-rays in the Aqueous Phase Open
Low-energy-electron emission from resonant Auger final states via intermolecular Coulombic decay (RA-ICD) has previously been described as a promising scenario for controlling radiation damage for medical purposes, but it has so far only b…
View article: Tautomerism of a backbone protonated peptide revealed by soft X-ray action spectroscopy
Tautomerism of a backbone protonated peptide revealed by soft X-ray action spectroscopy Open
The structure and reactivity of peptides can be influenced by their protonation state. We present the nitrogen K-edge fingerprint of backbone amide protonation and of enol forms of a peptide bond in protonated acetyl-pentaglycine.
View article: Attosecond formation of charge-transfer-to-solvent states of aqueous ions probed using the core-hole-clock technique
Attosecond formation of charge-transfer-to-solvent states of aqueous ions probed using the core-hole-clock technique Open
Charge transfer between molecules lies at the heart of many chemical processes. Here, we focus on the ultrafast electron dynamics associated with the formation of charge-transfer-to-solvent (CTTS) states following X-ray absorption in aqueo…
View article: Site- and Energy-Selective Low-Energy Electron Emission by X-Rays in Aqueous Phase
Site- and Energy-Selective Low-Energy Electron Emission by X-Rays in Aqueous Phase Open
Low-energy-electron emission from resonant Auger final states via intermolecular Coulombic decay (RA-ICD) has been previously described as a promising scenario for controlling radiation damage for medical purposes, but has so far only been…
View article: Heavy element incorporation in nitroimidazole radiosensitizers: molecular-level insights into fragmentation dynamics
Heavy element incorporation in nitroimidazole radiosensitizers: molecular-level insights into fragmentation dynamics Open
The present study investigates the photofragmentation behavior of iodine-enhanced nitroimidazole-based radiosensitizer model compounds in their protonated form using near-edge X-ray absorption mass spectrometry and quantum mechanical calcu…
View article: Inequivalent Solvation Effects on the N 1s Levels of Self-Associated Melamine Molecules in Aqueous Solution
Inequivalent Solvation Effects on the N 1s Levels of Self-Associated Melamine Molecules in Aqueous Solution Open
This work shows how the N 1s photoemission (PE) spectrum of self-associated melamine molecules in aqueous solution has been successfully rationalized using an integrated computational approach encompassing classical metadynamics simulation…
View article: Mapping the electronic transitions of protonation sites in peptides using soft X-ray action spectroscopy
Mapping the electronic transitions of protonation sites in peptides using soft X-ray action spectroscopy Open
Near-edge X-ray absorption mass spectrometry (NEXAMS) around the N and O K-edges was employed ongas-phase peptides to probe the electronic transitions related totheir protonation sites, namely at basic side chains, the N-terminus and the a…
View article: Radiation damage hot spots formed by two-step electron transfer mediated decay of solvated ions - data
Radiation damage hot spots formed by two-step electron transfer mediated decay of solvated ions - data Open
Data set pertaining to the manuscript "Radiation damage hot spots formed by two-step electron transfer mediated decay of solvated ions", accepted for publication in Nature Chemistry. Files with extension .h5 are hdf5-files structured accor…
View article: Radiation damage hot spots formed by two-step electron transfer mediated decay of solvated ions - data
Radiation damage hot spots formed by two-step electron transfer mediated decay of solvated ions - data Open
Data set pertaining to the manuscript "Radiation damage hot spots formed by two-step electron transfer mediated decay of solvated ions", accepted for publication in Nature Chemistry. Files with extension .h5 are hdf5-files structured accor…
View article: Radiation damage hot spots formed by two-step electron transfer mediated decay of solvated ions - data
Radiation damage hot spots formed by two-step electron transfer mediated decay of solvated ions - data Open
Data set pertaining to the manuscript "Radiation damage hot spots formed by two-step electron transfer mediated decay of solvated ions", accepted for publication in Nature Chemistry. Files with extension .h5 are hdf5-files structured accor…
View article: Radiation damage hot spots formed by two-step electron transfer mediated decay of solvated ions - data
Radiation damage hot spots formed by two-step electron transfer mediated decay of solvated ions - data Open
Data set pertaining to the manuscript "Radiation damage hot spots formed by two-step electron transfer mediated decay of solvated ions", submitted. Files with extension .h5 are hdf5-files structured according to the NeXus standard v2022.07…
View article: Probing Aqueous Ions with Non-local Auger Relaxation - data
Probing Aqueous Ions with Non-local Auger Relaxation - data Open
Data set pertaining to the article "Probing aqueous ions with non-local Auger relaxation" | Physical Chemistry Chemical Physics, 24, 8661-8671 (2022). doi: 10.1039/D2CP00227B. Files with extension .h5 are hdf5-files structured according to…
View article: Probing Aqueous Ions with Non-local Auger Relaxation - data
Probing Aqueous Ions with Non-local Auger Relaxation - data Open
Data set pertaining to the article "Probing aqueous ions with non-local Auger relaxation" | Physical Chemistry Chemical Physics, 24, 8661-8671 (2022). doi: 10.1039/D2CP00227B. Files with extension .h5 are hdf5-files structured according to…
View article: Probing Aqueous Ions with Non-local Auger Relaxation - data
Probing Aqueous Ions with Non-local Auger Relaxation - data Open
Data set pertaining to the article "Probing aqueous ions with non-local Auger relaxation" | Physical Chemistry Chemical Physics, 24, 8661-8671 (2022). doi: 10.1039/D2CP00227B. Files with extension .h5 are hdf5-files structured according to…
View article: X-ray Induced Fragmentation of Protonated Cystine
X-ray Induced Fragmentation of Protonated Cystine Open
We demonstrate site-specific X-ray induced fragmentation across the sulfur L-edge of protonated cystine, the dimer of the amino acid cysteine. Ion yield NEXAFS were performed in the gas phase using electrospray ionization (ESI) in combinat…
View article: X-ray induced fragmentation of protonated cystine
X-ray induced fragmentation of protonated cystine Open
We demonstrate site-specific X-ray induced fragmentation across the sulfur L-edge of protonated cystine, the dimer of the amino acid cysteine. Ion yield NEXAFS were performed in the gas phase using electrospray ionization (ESI) in combinat…
View article: Surface composition of size-selected sea salt particles under the influence of organic acids studied <i>in situ</i> using synchrotron radiation X-ray photoelectron spectroscopy
Surface composition of size-selected sea salt particles under the influence of organic acids studied <i>in situ</i> using synchrotron radiation X-ray photoelectron spectroscopy Open
Synchrotron X-ray photoelectron spectroscopic surface characterisation of size-resolved sea salt aerosol particles revealed Mg enrichment in the particle surface layer which was either enhanced or decreased depending on the organic compoun…
View article: Probing aqueous ions with non-local Auger relaxation
Probing aqueous ions with non-local Auger relaxation Open
Non-local analogues of Auger decay, such as Intermolecular Coulombic Decay, are increasingly recognized as important relaxation processes in aqueous electrolytes.
View article: The surface composition of amino acid – halide salt solutions is pH-dependent
The surface composition of amino acid – halide salt solutions is pH-dependent Open
In atmospheric aerosol particles, the chemical surface composition governs both heterogenous chemical reactions with gas-phase species and the ability to act as nuclei for cloud droplets. We explore the impact of the pH-changes on such sur…
View article: The Surface Composition of Amino Acid - Halide Salt Solutions is pH-Dependent
The Surface Composition of Amino Acid - Halide Salt Solutions is pH-Dependent Open
Set of raw data which has been used for the publication. In short, it's about how the pH of a mixed solution of an amino acid and an inorganic halogen salt impacts the surface propensity of the inorganic ions.
View article: The Surface Composition of Amino Acid - Halide Salt Solutions is pH-Dependent
The Surface Composition of Amino Acid - Halide Salt Solutions is pH-Dependent Open
Set of raw data which has been used for the publication. In short, it's about how the pH of a mixed solution of an amino acid and an inorganic halogen salt impacts the surface propensity of the inorganic ions.
View article: The Surface Composition of Amino Acid - KCl Solutions is pH-Dependent
The Surface Composition of Amino Acid - KCl Solutions is pH-Dependent Open
The manuscript based on X-ray photoelectron spectroscopy on aqueous solutions containing KCl and different amino acids. Our analysis suggests that the presence of the inorganic ions at the surface of the liquid is strongly dependent on the…
View article: The Surface Composition of Amino Acid - KCl Solutions is pH-Dependent
The Surface Composition of Amino Acid - KCl Solutions is pH-Dependent Open
The manuscript based on X-ray photoelectron spectroscopy on aqueous solutions containing KCl and different amino acids. Our analysis suggests that the presence of the inorganic ions at the surface of the liquid is strongly dependent on the…
View article: Angular emission distribution of O 1s photoelectrons of uniaxially oriented methanol
Angular emission distribution of O 1s photoelectrons of uniaxially oriented methanol Open
The angular distribution of O 1s photoelectrons emitted from uniaxially oriented methanol is studied experimentally and theoretically. We employed circularly polarized photons of an energy of hν = 550 eV for our investigations. We measured…
View article: Temperature Dependence of X-ray-Induced Auger Processes in Liquid Water
Temperature Dependence of X-ray-Induced Auger Processes in Liquid Water Open
Auger spectroscopy has previously been used to study changes in the hydrogen bond network in liquid water, but to the best of our knowledge it has not been used to track such changes as a function of temperature. We show Auger spectroscopy…
View article: Proton dynamics in molecular solvent clusters as an indicator for hydrogen bond network strength in confined geometries
Proton dynamics in molecular solvent clusters as an indicator for hydrogen bond network strength in confined geometries Open
The size-dependence of proton-dynamics occurring upon core-ionisation is linked to a weakening of the hydrogen-bond network in molecular clusters.
View article: X-ray Photoelectron Fingerprints of High-Valence Ruthenium–Oxo Complexes along the Oxidation Reaction Pathway in an Aqueous Environment
X-ray Photoelectron Fingerprints of High-Valence Ruthenium–Oxo Complexes along the Oxidation Reaction Pathway in an Aqueous Environment Open
Recent advances in operando-synchrotron-based X-ray techniques are making it possible to address fundamental questions related to complex proton-coupled electron transfer reactions, for instance, the electrocatalytic water splitting proces…
View article: Site-specific X-ray induced dynamics in liquid methanol
Site-specific X-ray induced dynamics in liquid methanol Open
Ionising radiation causes complex dynamics in amphiphilic liquids such as methanol.