Analysis of organic EL material by JMS-T100GC “AccuTOF™ GC”：comparison of FD and DEI methods
MSTips No. 078
Field desorption (FD) is an ionization method utilizing electron tunneling effect in high electric field near the emitter surface or whisker tip. Sample is applied on an emitter and heated up by applying an electric current through the emitter inducing desorption and ionization. FD has been used to analyze nonvolatile compounds, polymers, etc. as soft ionization method, generating an intact molecular ion and very few fragment ions in most cases. We have compared FD and desorption electron ionization (DEI), which are both direct sample introduction methods, for the analysis of an organic electroluminescence material with many aromatic rings.