NOVELTY - An organic electroluminescent (hetero)arylene-containing compound is new.    USE - An organic electroluminescent (hetero)arylene-containing compound for use in an organic layer of an organic electroluminescent device, preferably an organic display or an organic solar cell (claimed).    ADVANTAGE - The organic electroluminescent compound has high blue luminous efficiency and excellent life property of material. Organic LEDs (OLEDs) comprising the organic electroluminescent compound having very good operation lifetime can be manufactured.    DETAILED DESCRIPTION - An organic electroluminescent (hetero)arylene-containing compound of formula Ar5-(AR6)N-Ar1-CC-Ar2-N(Ar4)-Ar3 is new.    Ar1, Ar2=6-60C arylene or 5-60C heteroarylene optionally substituted by deuterium, linear or branched 1-60C alkyl or 6-60C aryl;    Either (i) Ar3-Ar6=linear or branched 1-60C alkyl; 3-60C cycloalkyl; 5- or 6-membered heterocycloalkyl containing N, O and/or S; or 6-60C aryl or 3-60C heteroaryl optionally substituted by G; or    (ii)Ar3+Ar5+3-60C alkylene or alkenylene optionally with fused ring or Ar6+Ar7+3-60C alkylene or alkenylene optionally with fused ring=alicyclic ring or monocyclic or polycyclic aromatic ring; and    G=deuterium, 6-60C aryl optionally with linear or branched 1-60C alkyl or 6-60C aryl substituent, linear or branched 1-60C alkyl optionally with halo substituent(s), 1-30C alkoxy, 3-60C cycloalkyl, halo, cyano, tri(1-30C)alkylsilyl, di(1-30C)alkyl(6-30C)arylsilyl, or tri(6-30C)arylsilyl.    INDEPENDENT CLAIMS are included for:    (1) an organic electroluminescent device comprising organic layer(s) interposed between two electrodes and comprising organic electroluminescent compound(s) of formula Ar5-(AR6)N-Ar1-CC-Ar2-N(Ar4)-Ar3 and host(s) comprising compound of formula (Ar11)a-A-(Ar12)b or (Ar11)a-An-(Ar12)b; and    (2) an organic solar cell comprising an organic electroluminescent compound of formula Ar5-(AR6)N-Ar1-CC-Ar2-N(Ar4)-Ar3.    Ar11, Ar12=H, 1-60C alkyl or alkoxy, halo, or 4-60C heteroaryl or 5-60C cycloalkyl optionally substituted by G;    A=6-60C arylene or 4-60C heteroarylene;    a, b=0-4; and    An=optionally substituted anthracene backbone.