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Characterization of an insoluble polyimide oligomer by matrix‐assisted laser desorption/ionization time‐of‐flight mass spectrometry
Author(s) -
Gies Anthony P.,
idez William K.,
Anthamatten Mitchell,
Cook Robert C.,
Mays Jimmy W.
Publication year - 2002
Publication title -
rapid communications in mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.528
H-Index - 136
eISSN - 1097-0231
pISSN - 0951-4198
DOI - 10.1002/rcm.809
Subject(s) - chemistry , oligomer , polyimide , mass spectrometry , matrix (chemical analysis) , desorption , matrix isolation , mass spectrum , matrix assisted laser desorption/ionization , analyte , ionization , analytical chemistry (journal) , chromatography , polymer chemistry , organic chemistry , molecule , ion , layer (electronics) , adsorption
Abstract In the past two years, papers have appeared in the literature which demonstrate that matrix‐assisted laser desorption/ionization time‐of‐flight (MALDI‐TOF) mass spectra can be obtained from matrix‐analyte preparations which have been produced by grinding the two materials together until a powder of small particle size is obtained. In the present study that methodology was modified and applied to an insoluble polyimide oligomer, poly(4,4′‐oxydiphenylenepyromellitimide) (POPM). Two matrix materials were employed in this analysis, 1,8 dihydroxyanthrone (dithranol) and 3‐aminoquinoline, with and without an additional cationizing agent. The spectra obtained by this method are shown to be sensitive to the matrix employed in the analysis as well as the quantity of cationizing agent combined with the matrix. Copyright © 2002 John Wiley & Sons, Ltd.