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Faculty for Biology, Chemistry, and Earth Sciences

Macromolecular Chemistry I:

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Rothmann, M.; Haneder, S.; Da Como, E.; Lennartz, Ch.; Schildknecht, Ch.; Strohriegl, P.: Donor-Substituted 1,3,5-Triazines as Host Materials for Blue Phosphorescent Organic Light-Emitting Diodes., Chemistry of Materials, 22(7), 2403-2410 (2010) -- DOI: 10.1021/cm9033879
A series of new donor-substituted 1,3,5-triazines (TRZ1-7) has been prepd. by nucleophilic substitution of cyanuric chloride with carbazole, 3-methylcarbazole, phenol, and 3,5-dimethylphenol. These s-triazines have been investigated as host material for blue phosphorescent light-emitting diodes (OLEDs). All triazine based hosts were characterized regarding their optical and thermal properties. Different substitution patterns resulted in high glass-transition temps. (Tg) of up to 170 DegC and triplet energies (Delta E(T1-S0)) of up to 2.96 eV. The application as host material for the blue phosphor bis(4,6-difluorophenylpyridinato-N,C2)picolinato-iridium(III) (FIrpic) yielded max. current efficiencies up to 21 cd/A
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