NOVELTY - An aromatic-amine derivative (1) is new.    USE - New aromatic-amine derivative is useful as doping material for organic electroluminescent elements (both claimed), and as luminescent material. Uses include but are not limited to backlights of flat panel displays e.g. LCDs of wall-mounted televisions, copiers and printers, measuring instruments, display boards, marker lamps, electrophotographic photoreceptors, solar cells, photoelectric transducers, and image sensors.    ADVANTAGE - The new aromatic-amine derivative provides organic electroluminescent elements which emit blue light with high color purity, and have excellent luminous efficiency. The derivative has excellent luminescent property, electron injection property, electron transport property, hole transport property, hole injection property, and film-formation property. Movement of exciton produced by the light-emitting layer into the electron injection layer is prevented.    DETAILED DESCRIPTION - An aromatic-amine derivative of formula (1), is new.    Ar11-Ar14=optionally substituted aryl having 5-50 nuclear carbon atoms or optionally substituted heterocyclic group having 5-50 nuclear carbon atoms;    A1-A4=H, or 1-50C alkyl, aryl having 5-50 nuclear carbon atoms, aralkyl having 6-50 nuclear carbon atoms, cycloalkyl having 3-50 nuclear carbon atoms, 1-50C alkoxy, 5-50C aryloxy, arylamino having 5-50 nuclear carbon atoms, 1-20C alkylamino, heterocyclic group having 5-50 nuclear carbon atoms, or silyl (all optionally substituted), cyano, or halo;    B'1=H, or 1-50C alkyl, aryl having 5-50 nuclear carbon atoms, aralkyl having 6-50 nuclear carbon atoms, or cycloalkyl having 3-50 nuclear carbon atoms (all optionally substituted);    a-d=0-5;and    z=0-8.    When each of a-d is 2 or more, A1-A4 may mutually be connected to form (un)saturated ring. An INDEPENDENT CLAIM is included for organic electroluminescent element consisting of an organic thin-film layer comprising a light-emitting layer, clamped between a cathode and an anode. The organic thin-film layer(s) contains the aromatic-amine derivative individually or as a mixture.