TECHNOLOGY FOCUS - ELECTRONICS - Preferred Arrangement: The organic thin film layer has layer(s) of positive hole transport layer and positive hole injection layer, at least 1 of which contains the aromatic-amine derivative and an acceptor material.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preparation: No general preparation given. Preferred Definitions:    A1,A2=monovalent group of formula (iii or iv);    at least one of Ar1 and Ar2=phenylene, biphenylene, terphenylene, naphthylene or phenanthrenylenel;    Ar3=bivalent group of formula (v);    R3=1-15C linear or branched alkyl, 2-15C linear or branched alkenyl, 3-15C cycloalkyl, trialkylsilyl having 1-15C alkyl, triarylsilyl having aryl with 6-25 ring-forming carbon atoms, alkylarylsilyl having aryl with 6-25 ring-forming carbon atoms and 1-15C alkyl group, aryl having 6-25 ring-forming carbon atoms, heteroaryl with 5-25 ring-forming atoms, halo, or cyano;    several R3 groups=(un)saturated ring;    c=0-4;    t=1-3;and    L=coupling group chosen from -O-, -CH2-, -C(-CH3)2-, or group chosen from groups of formulae (vi)-(xiv).    EXAMPLE - (In g) (7-carbazol-9-yl-9,9-dimethyl-9H-fluoren-2-yl)-naphthalen-1-yl-amine (15), 1,3,5-tris(4-bromophenyl)benzene (5.4), t-butoxy sodium (1.3), tris(dibenzylidene acetone)dipalladium(0) (46 mg), tri-t-butylphosphine (21 mg), and dehydrated toluene (50 ml) were reacted at 80 degrees C for 8 hours. Water (500 ml) was added after cooling, and the mixture was filtered, extracted with toluene, and dried. The crude product obtained by concentrating under reduced pressure was recrystallized using toluene, filtered, and dried to obtain N-(4-(3,5-bis(4-((7-(9H-carbazol-9-yl)-9,9-dimethyl-9H-fluoren-2-yl)(naphthalen-1-yl)amino)phenyl)phenyl)phenyl)-7-(9H-carbazol-9-yl)-9,9-dimethyl-N-(naphthalen-1-yl)-9H-fluoren-2-amine (5.4) as pale yellow powder. The obtained compound provided organic electroluminescent element having a luminous efficiency of 7 cd/A, a brightness half-life 1760 hours at 1000 cd/m2, and 60 degrees C brightness half-life/room temperature brightness half-life ratio of 0.44.