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Heavy ion induced desorption (HIID) mass spectrometry of Langmuir‐Blodgett films built from CD‐salts of fatty acids
Author(s) -
Schmidt R.,
Brandl D.,
Schoppmann Ch.,
Voit H.,
Johannsmann D.,
Kröhl T.,
Knoll W.
Publication year - 1991
Publication title -
makromolekulare chemie. macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 0258-0322
DOI - 10.1002/masy.19910460141
Subject(s) - desorption , langmuir–blodgett film , mass spectrometry , chemistry , ion , langmuir , cadmium , substrate (aquarium) , salt (chemistry) , molecule , analytical chemistry (journal) , adsorption , chromatography , organic chemistry , oceanography , geology
Langmuir‐Blodgett films made from cadmium salts of fatty acids have been analyzed by means of the heavy ion induced mass spectrometry in which megaelectronvolt ions are used to desorb sample specific molecules. The method is a useful tool for detecting incomplete salt formation at the subphase and the replacement of the original counter‐ion by ions from the substrate surface. The method exhibits a depth sensitivity which can be varied between 2 to 14 layers depending on the energy loss of the heavy ion.