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Is the natural shape of ions in the gas phase spherical ? The allegory of the cave (Plato) applied in mass spectrometry
Far, Johann; Haler, Jean; Kune, Christopher et al.
201533rd informal meeting in mass spectromrtry
 

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Keywords :
Ion mobility; Mass spectrometry; polymers
Abstract :
[en] The transfer of ions from solution to gas phase is a critical step to produce « native species ». Coming from a highly solvating medium, ionic species will tend to find new equilibrium conformations in the gas phase. The pathway to reach the thermodynamically stable conformation(s) involves crossing potential barriers according to the type of interactions involved. When these barriers are too high compared to the internal energy of the ions, it may result in a “partial memory” (as structural preservation) of the conformation in solution. In order to evaluate the effect of the solvent evaporation and of the various collision processes encountered by the ions in the mass spectrometer we based our strategy on the determination of deviations from a spherical shape, supposed to be the natural state of ions in the gas phase.
Disciplines :
Biochemistry, biophysics & molecular biology
Chemistry
Author, co-author :
Far, Johann  ;  Université de Liège > Center for Analytical Research and Technology (CART)
Haler, Jean ;  Université de Liège > Département de chimie (sciences) > Laboratoire de spectrométrie de masse (L.S.M.)
Kune, Christopher  ;  Université de Liège > Département de chimie (sciences) > Laboratoire de spectrométrie de masse (L.S.M.)
Morsa, Denis  ;  Université de Liège > Center for Analytical Research and Technology (CART)
De Pauw, Edwin  ;  Université de Liège > Département de chimie (sciences) > Laboratoire de spectrométrie de masse (L.S.M.)
Language :
English
Title :
Is the natural shape of ions in the gas phase spherical ? The allegory of the cave (Plato) applied in mass spectrometry
Publication date :
13 May 2015
Number of pages :
22
Event name :
33rd informal meeting in mass spectromrtry
Event organizer :
P. Traldi, K. Vekey
Event place :
Szczyrd, Poland
Event date :
10-13 may 2015
By request :
Yes
Audience :
International
Available on ORBi :
since 22 May 2015

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