Detection of molecular ions from OLED material using GC-TOFMS [GC-TOFMS Application]
MS Tips No.087
Organic electroluminescence, (Organic EL, Organic Light Emitting Diode, OLED, we use “Organic EL” hereafter) is a light emitting phenomenon by exciton generated by recombination of electron holes and electrons which were injected in organic substance. Application to displays and illuminations is expected. At the moment, it has been commercialized for small displays, such as a sub-display of a mobile phone, and its research has been on-going for practical applications comparable to those of a liquid crystal display and a plasma display. Field desorption (FD) is an ionization method utilizing electron tunneling effect in high an electric field near the emitter whisker tip and is known as a very soft ionization method. It gives very simple mass spectra with little fragmentation and, therefore, interpretation of a mass spectrum from a mixture is easy. Since no sample vaporization is required, it is suitable for the analysis of thermally labile compounds. We have analyzed an organic EL material by FD using AccuTOF™ GC time-of-flight mass spectrometer.
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