edoc-vmtest

Single-Photon Ionization of Organic Molecules Beyond 10 kDa

Schmid, Philipp and Stöhr, Frederik and Arndt, Markus and Tüxen, Jens and Mayor, Marcel. (2013) Single-Photon Ionization of Organic Molecules Beyond 10 kDa. Journal of the American Society for Mass Spectrometry, 24 (4). pp. 602-608.

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Official URL: http://edoc.unibas.ch/dok/A6223580

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Abstract

The volatilization and soft ionization of complex neutral macromolecules at low energies has remained an outstanding challenge for several decades [1]. Most volatilization techniques in mass spectrometry produce ions already in the source and most of them lead to particle velocities in excess of several hundred meters per second. For many macromolecules, post-ionization is inefficient since electronic or optical excitations can be followed by competing non-ionizing internal conversion, electron recapture, or fragmentation processes. Here, we explore the laser-assisted volatilization of neutral perfluoroalkyl-functionalized tetraphenylporphyrins as well as their single-photon ionization using vacuum ultraviolet (VUV) light at 157 nm. A systematic investigation of the ionization curves allows us to determine the molecular velocity distribution and ionization cross sections. We demonstrate the detection of single photon ionized intact organic molecules in excess of 10 kDa from a slow molecular beam.
Faculties and Departments:05 Faculty of Science > Departement Chemie > Chemie > Molecular Devices and Materials (Mayor)
UniBasel Contributors:Mayor, Marcel and Tüxen, Jens
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Springer
ISSN:1044-0305
e-ISSN:1879-1123
Note:Publication type according to Uni Basel Research Database: Journal article
Identification Number:
Last Modified:05 Apr 2017 10:19
Deposited On:27 Mar 2014 13:12

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