1,3,5-triazine derivatives, their preparation method and its components constituting the organic electroluminescent device

Disclosed is a 1,3,5-triazine derivative represented by formula (1), wherein R1 represents a hydrogen atom, a C1-4 alkyl group or an optionally substituted phenyl group; n is an integer of 1 to 3; Ar represents an optionally substituted aromatic hydrocarbon group, provided that Ar is different from two substituted quaterarylenyl groups bonded to the 1,3,5-triazine ring; and V and Y represent a carbon atom or a nitrogen atom, provided that V and Y do not simultaneously represent a carbon atom. An organic electroluminescent element comprising the 1,3,5-triazine derivative as an electron transport material has a long service life.