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Matter-wave interference and deflection of tripeptides decorated with fluorinated alkyl chains

Schätti, Jonas and Köhler, Valentin and Mayor, Marcel and Fein, Yaakov Y. and Geyer, Philipp and Mairhofer, Lukas and Gerlich, Stefan and Arndt, Markus. (2020) Matter-wave interference and deflection of tripeptides decorated with fluorinated alkyl chains. Journal of Mass Spectrometry, 55 (6). e4514.

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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; 4; π; ε; 0; ×; 330; ±; 150; Å; 3; and; 4; π; ε; 0; ×; 270; ±; 80; Å; 3; .
Faculties and Departments:05 Faculty of Science
05 Faculty of Science > Departement Chemie
05 Faculty of Science > Departement Chemie > Chemie
05 Faculty of Science > Departement Chemie > Chemie > Bioanorganische Chemie (Ward)
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Wiley
ISSN:1076-5174
e-ISSN:1096-9888
Note:Publication type according to Uni Basel Research Database: Journal article
Language:English
Identification Number:
Last Modified:09 Jun 2020 12:40
Deposited On:09 Jun 2020 07:38

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