Titel
Matter-wave interference and deflection of tripeptides decorated with fluorinated alkyl chains
Autor*in
Jonas Schätti
Department of Chemistry, University of Basel
Autor*in
Valentin Köhler
Department of Chemistry, University of Basel
Autor*in
Marcel Mayor
Department of Chemistry, University of Basel
... show all
Abstract
Studies of neutral biomolecules in the gas phase allow for the study of molecular properties in the absence of solvent and charge effects, thus complementing spectroscopic and analytical methods in solution or in ion traps. Some properties, such as the static electronic susceptibility, are best accessed in experiments that act on the motion of the neutral molecules in an electric field. Here, we screen seven peptides for their thermal stability and electron impact ionizability. We identify two tripeptides as sufficiently volatile and thermostable to be evaporated and interfered in the long-baseline universal matter-wave interferometer. Monitoring the deflection of the interferometric molecular nanopattern in a tailored external electric field allows us to measure the static molecular susceptibility of Ala–Trp–Ala and Ala–Ala–Trp bearing fluorinated alkyl chains at C- and N-termini. The respective values are 4πε0x(330±150)ų and 4πε0x(270±80)ų.
Stichwort
deflectometrymatter-wavesmolecular beamsmolecule interferometrytripeptides
Objekt-Typ
Sprache
Englisch [eng]
Persistent identifier
https://phaidra.univie.ac.at/o:1218500
Erschienen in
Titel
Journal of Mass Spectrometry
Band
55
Ausgabe
6
ISSN
1076-5174
Erscheinungsdatum
2020
Verlag
Wiley
Projektnummer
ERC 320694 – European Union (all programmes)
Projektnummer
P-30176 – Austrian Science Fund (FWF)
Projektnummer
W1210-N25 – Austrian Science Fund (FWF)
Erscheinungsdatum
2020
Zugänglichkeit
Rechteangabe
© 2020 The Authors

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