High desorption—ionization yields of large biomolecules induced by fast C60 projectiles

Autor:	J. Depauw, Serge Della-Negra, P. Håkansson, C. Deprun, Y. Le Beyec, Alain Brunelle, Michèle Pautrat, D. Jacquet
Rok vydání:	1997
Předmět:	Time of flight Fullerene Chemistry Yield (chemistry) Desorption Polyatomic ion Physics::Atomic and Molecular Clusters Mass spectrum Atomic physics Spectroscopy Order of magnitude Ion
Zdroj:	International Journal of Mass Spectrometry and Ion Processes. 164:193-200
ISSN:	0168-1176
DOI:	10.1016/s0168-1176(97)00057-8
Popis:	C60 molecules accelerated to MeV energies (20 MeV) have been used to induce the desorption-ionization of large biomolecules from solid samples. For a sample consisting of trypsin molecules, the secondary molecular ion emission yield is about two orders of magnitude larger than with MeV atomic ions. This is a consequence of the very high energy density deposited in solids by 20 MeV C60 projectiles that gives rise to a large amount of matter ejected after each impact. Although time-of-flight mass spectra can be recorded within a few seconds, it is more the acquisition of knowledge on mechanistic aspects, in comparison with other particle-induced desorption methods, which is the objective of obtaining these first results with energetic fullerenes.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ff2b0ca54f52dd7c63cfcef2c1a0dbe0 https://doi.org/10.1016/s0168-1176(97)00057-8 Zobrazit plný text záznamu Full Text from ScienceDirect