Characterization of Fused Ring Oligomers by Laser Desorption Ionization Time-of-Flight Mass Spectrometry

In this paper,several different structures of pyrazine fused ring oligomers were determined by laser desorption ionization time-of-flight mass spectrometry(LDI-TOF-MS).Samples were dissolved in dimethyl sulfoxide and the spectra were recorded in a positive ion mode.Molecular ion peaks of these oligomers and small molecular fragment ion peaks were observed.LDI-TOF-MS is an effective measuring technique for the characterization of pyrazine fused ring compounds.