NOVELTY - A nitrogen-containing heterocyclic compound (I) is new.    USE - Nitrogen-containing heterocyclic compound is used for organic layer of organic electronic device e.g. organic light emitting device, organic phosphorescence device, organic solar cell, organophotoreceptor and organic transistor (all claimed).    ADVANTAGE - The organic electronic device having organic layer containing the nitrogen-containing heterocyclic compound has excellent durability and low drive voltage.    DETAILED DESCRIPTION - A nitrogen-containing heterocyclic compound of formula (I), is new.    R1,R2=H, D, halo, nitrile, or 1-50C alkyl, 3-50C cycloalkyl, 2-50C alkenyl, 6-50C aryl or 2-50C heteroaryl having O, N, S, or P as hetero atom, (all optionally substituted);    R3-R6=H, D, halo, nitrile, or 1-50C alkyl, 3-50C cycloalkyl, 1-50C alkoxy, 1-50C t-alkyl oxy, 6-50C aryloxy, 2-50C alkenyl, silyl, boron, fluorenyl, 6-50C arylamine, 6-50C aryl or 2-50C heteroaryl having O, N, S, or P as hetero (all optionally substituted);    R7=H, D, halo, nitrile, or 1-50C alkyl, 3-50C cycloalkyl, 2-50C alkenyl, silyl, boron, 13-50C fluorenyl, 6-50C arylamine, 6-50C aryl or 2-50C heteroaryl having O, N, S, or P as hetero, (all optionally substituted), at least one of R1-R7 is a group of formula: -(L)p-(Y')q;    p=0-10;    q=1-10;    L=6-50C arylene, 2-50C alkenylene, 13-50C fluorenylene or 2-50C heteroarylene having O, N, S, or P as hetero (all optionally substituted);    Y'=H, D, halo, nitrile, or 1-50C alkyl, 3-50C cycloalkyl, 1-50C alkoxy, 1-50C t-alkyl oxy, 6-50C aryloxy, 2-50C alkenyl, silyl, boron, 13-50C fluorenyl, 6-50C arylamine, 6-50C aryl or 2-50C heteroaryl having O, N, S, or P as hetero atom;and    R1+R2,R3+R4,R4+R5,R5+R6=aliphatic, aromatic, aliphatic hetero, or aromatic hetero fused ring or form spiro bond.    An INDEPENDENT CLAIM is included for organic electronic device, which has an organic layer containing the nitrogen-containing heterocyclic compound, between primary electrode and secondary electrode.