Fast Atom Bombardment Mass Spectrometric Characterization of Poly(O-Toluidine)

Fast atom bombardment (FAB) mass spectrometry has been used to analyze chemically prepared and fractionated poly(O-toluidine) of low molecular weight (m/z 5800) to evaluate its potential for the characterization of polymers of similar structure. In the lower mass range (m/z 400-1800) ionic species d...

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Bibliographic Details
Main Authors: Balasaunmugam, K, Owens, K G, Hsueh, K F, Hoontrakul, P, Olsen, M A
Format: Report
Language:English
Subjects:
ATOMS
FAST ATOM BOMBARDMENT MASS SPECTROMETRY
GEL PERMEATION CHROMATOGRAPHY
IONS
LIGHTWEIGHT
MASS
MASS SPECTRA
MASS SPECTROMETRY
MOLECULAR WEIGHT
OXYGEN
Polymer Chemistry
POLYMERS
SEPARATION
STRUCTURAL PROPERTIES
THERMOGRAVIMETRIC ANALYSIS
TOLUIDINES
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Summary:Fast atom bombardment (FAB) mass spectrometry has been used to analyze chemically prepared and fractionated poly(O-toluidine) of low molecular weight (m/z 5800) to evaluate its potential for the characterization of polymers of similar structure. In the lower mass range (m/z 400-1800) ionic species detected are separated by the mass of a toluidine monomer unit (m/z = 105). An interesting feature of the mass spectra is the observation that the apparent main component of poly(o-toluidine) contains one oxygen atom per chain. This is further confirmed by MS/MS analysis of selected ions. Several possible reasons for the presence of oxygen in the polymer are discussed. All results support the proposed structure of the polymer and demonstrate that FAB-MS can provide detailed structural information on the electrically conductive poly(o- toluidine) and related compounds.