| abstract |
A 1, 3, 5-triazine derivative represented by the formula (1) :n nwherein R 1 , R 2 and R 3 each independently represent a hydrogen atom or a methyl group; X represents a carbon atom or a nitrogen atom; Ar 1 represents a substituted or unsubstituted aromatic hydrocarbon group; Ar 2 represents an C 1-4 alkyl-substituted or unsubstituted aromatic 6-membered heterocyclic group having one or two nitrogen atoms, which may be a condensed ring compound. An organic electroluminescent device comprising the 1,3,5-triazine derivative exhibits low power consumption and long lifetime. |