Druckansicht der Internetadresse:

Faculty for Biology, Chemistry, and Earth Sciences

Macromolecular Chemistry I:

print page
Wagner, D.; Rothmann, M.; Strohriegl, P.; Lennartz, Ch.; Münster, I.; Wagenblast, G.; Schildknecht, Ch.: Host Materials for Blue Phosphorescent OLEDs, Proceedings of SPIE, 8476(Organic Light Emitting Materials and Devices XVI), 84761-1-9 (2012), doi:10.1117/12.928913
Abstract:
PCTrz, a new bipolar host material containing a phenoxy-carbazole separated from a biscarbazolyl-triazine by a non-conjugated ether bond is presented. Computational calculations demonstrated the separation of PCTrz into an oxidation and a reduction site. A phosphorescent OLED with PCTrz as host and FIrpic as blue emitter yielded high current efficiencies of up to 16.2 cd/A. Additionally two electron transporting host materials DBFTaz and DBFTazC, both containing 1,2,4-triazole moieies, were synthesized and characterized. The triazole moiety in DBFTaz was formed by a classical ring closure reaction between a N-benzoylbenzimidate and a hydrazine. For DBFTazC we used another synthetical pathway which involves subsequent coupling of a carbazole and a triazole moiety to a dibenzofuran core. Both triazoles posses high triplet energies of 2.95 eV for DBFTaz and 2.97 eV for DBFTazC, which make the compounds interesting as matrix materials for blue phosphorescent OLEDs.
Youtube-KanalKontakt aufnehmen
This site makes use of cookies More information