Gas-phase calorimetry of protonated water clusters

2012 ◽  
Vol 136 (16) ◽  
pp. 164307 ◽  
Author(s):  
M. Schmidt ◽  
B. von Issendorff
Keyword(s):  
Gas Phase ◽  
Water Clusters

Simulation of UV Absorption Spectra and Relaxation Dynamics of Uracil and Uracil-Water Clusters

2020 ◽  
Author(s):  
Branislav Milovanović ◽  
Jurica Novak ◽  
Mihajlo Etinski ◽  
Wolfgang Domcke ◽  
Nadja Doslic
Keyword(s):  
Aqueous Solution ◽  
Gas Phase ◽  
Absorption Spectra ◽  
Absorption Spectroscopy ◽  
Water Clusters ◽  
Uv Absorption ◽  
Relaxation Dynamics ◽  
Nonradiative Relaxation ◽  
Uv Absorption Spectra ◽  
Uv Absorption Spectroscopy

Despite many studies, the mechanisms of nonradiative relaxation of uracil in the gas phase and in aqueous solution are still not fully resolved. Here we combine theoretical UV absorption spectroscopy...

A New Liquid Droplet Laser Desorption Source Combined with Supersonic Jet Expansion: Application to Phenol and its Water Clusters

2014 ◽  
Vol 228 (4-5) ◽  
Author(s):  
Chayan Kanti Nandi ◽  
Hans-Dieter Barth ◽  
Bernhard Brutschy
Keyword(s):  
Gas Phase ◽  
Water Clusters ◽  
Liquid Droplet ◽  
Supersonic Jet ◽  
Laser Desorption ◽  
Laser Source ◽  
Published Data ◽  
Two Photon ◽  
Supersonic Jet Expansion ◽  
Phase Out

AbstractWe have developed a new laser source, for the spectroscopy of nonvolatile molecules in gas phase. It is based on a laser induced liquid bead ion desorption source (LILBID) combined with a supersonic beam. The cold molecules produced with this technique are sampled with Resonant Two Photon Ionization spectroscopy (R2PI) to measurement of the gas phase optical spectra. LILBID allows to bring nonvolatile molecule from liquid phase (out of a droplet) into gas phase, by means of multi photon ablation with IR photons exciting the vibrations of the solvent. Phenol and its different water clusters have been used as an example to demonstrate the method and to standardise the new experimental setup. The recorded R2PI spectral data of phenol monomer and its different water clusters obtained from this laser desorption technique are in very good agreement with the previously published data. This technique opens a new door for the measurement of molecules under microsolvation and potentially for

Conformational structures of jet-cooled acetaminophen–water clusters: a gas phase spectroscopic and computational study

2017 ◽  
Vol 19 (6) ◽  
pp. 4840-4848 ◽  
Author(s):  
Ahreum Min ◽  
Ahreum Ahn ◽  
Cheol Joo Moon ◽  
Ji Hoon Lee ◽  
Yeon Guk Seong ◽  
...  
Keyword(s):  
Gas Phase ◽  
Water Clusters ◽  
Computational Study ◽  
Theoretical Calculations

Jet-cooled acetaminophen (AAP)–water clusters, AAP–(H2O)1, have been investigated by a combination of theoretical calculations and R2PI, UV–UV HB, IR-dip, IR–UV HB techniques in the gas phase.

ChemInform Abstract: Deuterium Isotope Fractionation within Protonated Water Clusters in the Gas Phase.

ChemInform ◽  
1990 ◽  
Vol 21 (17) ◽  
Author(s):  
S. T. GRAUL ◽  
M. D. BRICKHOUSE ◽  
R. R. SQUIRES
Keyword(s):  
Gas Phase ◽  
Isotope Fractionation ◽  
Water Clusters

scholarly journals Water Radical Cations in the Gas Phase: Methods and Mechanisms of Formation, Structure and Chemical Properties

Molecules ◽  
2020 ◽  
Vol 25 (15) ◽  
pp. 3490
Author(s):  
Dongbo Mi ◽  
Konstantin Chingin
Keyword(s):  
Gas Phase ◽  
Water Clusters ◽  
Current Knowledge ◽  
Chemical Properties ◽  
Radical Cations ◽  
High Reactivity ◽  
Natural Processes ◽  
Mechanisms Of Formation ◽  
Primary Ions ◽  
And Chemical Properties

Water radical cations, (H2O)n+•, are of great research interest in both fundamental and applied sciences. Fundamental studies of water radical reactions are important to better understand the mechanisms of natural processes, such as proton transfer in aqueous solutions, the formation of hydrogen bonds and DNA damage, as well as for the discovery of new gas-phase reactions and products. In applied science, the interest in water radicals is prompted by their potential in radiobiology and as a source of primary ions for selective and sensitive chemical ionization. However, in contrast to protonated water clusters, (H2O)nH+, which are relatively easy to generate and isolate in experiments, the generation and isolation of radical water clusters, (H2O)n+•, is tremendously difficult due to their ultra-high reactivity. This review focuses on the current knowledge and unknowns regarding (H2O)n+• species, including the methods and mechanisms of their formation, structure and chemical properties.

Phase changes of the water hexamer and octamer in the gas phase and adsorbed on polycyclic aromatic hydrocarbons

2015 ◽  
Vol 17 (26) ◽  
pp. 17079-17089 ◽  
Author(s):  
Luiz Fernando L. Oliveira ◽  
Jérôme Cuny ◽  
Maxime Morinière ◽  
Léo Dontot ◽  
Aude Simon ◽  
...  
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Thermodynamic Properties ◽  
Gas Phase ◽  
Aromatic Hydrocarbons ◽  
Atmospheric Chemistry ◽  
Water Clusters ◽  
Phase Changes ◽  
Small Water ◽  
Polycyclic Aromatic

We investigate thermodynamic properties of small water clusters adsorbed on polycyclic aromatic hydrocarbons, which are relevant systems in the context of astrophysical and atmospheric chemistry.

On the Search for H5O2+centered Water Clusters in the Gas Phase

1999 ◽  
Vol 46 (3) ◽  
pp. 427-434 ◽  
Author(s):  
Huan-Cheng Chang ◽  
Jyh-Chiang Jiang ◽  
Hai-Chou Chang ◽  
Yi-Sheng Wang ◽  
Sheng H. Lin ◽  
...  
Keyword(s):  
Gas Phase ◽  
Water Clusters
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