Cryogenic ion chemistry and spectroscopy

AB Wolk, CM Leavitt, E Garand… - Accounts of chemical …, 2014 - ACS Publications
The use of mass spectrometry in macromolecular analysis is an incredibly important
technique and has allowed efficient identification of secondary and tertiary protein …

Performance of M06, M06-2X, and M06-HF density functionals for conformationally flexible anionic clusters: M06 functionals perform better than B3LYP for a model …

M Walker, AJA Harvey, A Sen… - The Journal of Physical …, 2013 - ACS Publications
We present a comparative assessment of the performance of the M06 suite of density
functionals (M06, M06-2X, and M06-HF) against an MP2 benchmark for calculating the …

Cryogenic methods for the spectroscopy of large, biomolecular ions

TR Rizzo, OV Boyarkin - Gas-Phase IR Spectroscopy and Structure of …, 2015 - Springer
Determining the conformation of biological molecules is key for understanding their function.
The recent combination of mass spectrometry, cryogenic ion traps, and laser spectroscopy is …

Cryogenic ion trap vibrational spectroscopy of hydrogen-bonded clusters relevant to atmospheric chemistry

N Heine, KR Asmis - International Reviews in Physical Chemistry, 2015 - Taylor & Francis
Recent advances in the gas phase vibrational spectroscopy of mass-selected ions are
described, highlighting experiments on hydrogen-bonded (HBed) clusters relevant to …

Identification of active sites and structural characterization of reactive ionic intermediates by cryogenic ion trap vibrational spectroscopy

H Schwarz, KR Asmis - Chemistry–A European Journal, 2019 - Wiley Online Library
Cryogenic ion trap vibrational spectroscopy paired with quantum chemistry currently
represents the most generally applicable approach for the structural investigation of …

Snapshots of proton accommodation at a microscopic water surface: Understanding the vibrational spectral signatures of the charge defect in cryogenically cooled H+ …

JA Fournier, CT Wolke, MA Johnson… - The Journal of …, 2015 - ACS Publications
We review the role that gas-phase, size-selected protonated water clusters, H+ (H2O) n,
have played in unraveling the microscopic mechanics responsible for the spectroscopic …

Separation and identification of glycan anomers using ultrahigh-resolution ion-mobility spectrometry and cryogenic ion spectroscopy

S Warnke, A Ben Faleh, V Scutelnic… - Journal of The American …, 2019 - ACS Publications
The analysis of carbohydrates, or glycans, is challenging for established structure-sensitive
gas-phase methods. The multitude of possible stereo-, regio-, and structural isomers makes …

Isomer-selective detection of hydrogen-bond vibrations in the protonated water hexamer

N Heine, MR Fagiani, M Rossi, T Wende… - Journal of the …, 2013 - ACS Publications
The properties of hydrogen ions in aqueous solution are governed by the ability of water to
incorporate ions in a dynamical hydrogen bond network, characterized by a structural …

[HTML][HTML] A dual cryogenic ion trap spectrometer for the formation and characterization of solvated ionic clusters

BM Marsh, JM Voss, E Garand - The Journal of Chemical Physics, 2015 - pubs.aip.org
A new experimental approach is presented in which two separate cryogenic ion traps are
used to reproducibly form weakly bound solvent clusters around electrosprayed ions and …

Accelerating anharmonic spectroscopy simulations via local-mode, multilevel methods

AA Zhanserkeev, EL Yang… - Journal of Chemical Theory …, 2023 - ACS Publications
Ab initio computer simulations of anharmonic vibrational spectra provide nuanced insight
into the vibrational behavior of molecules and complexes. The computational bottleneck in …