TECHNOLOGY FOCUS - ELECTRONICS - Preferred Element: An organic layer containing the high molecular compound is provided between anode (2) and cathode (9), formed on a substrate (1), in an organic electroluminescent element. The organic layer is hole transport layer (4) formed by wet forming method. A light emitting layer (5) and positive hole injection layer (3) are provided between the anode and cathode.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preparation (disclosed): Halogenated aryl of formulae: Ar1-X and Ar2-X are reacted with 3,4'-diaminodiphenyl ether in presence of base to obtain a secondary amine. The obtained amino compound is reacted with dihalo aryl compound of formula: X-Ar3-X, to obtain the high molecular compound.X=iodine, bromine, chlorine or fluorine.Preferred Compound: The high molecular compound has two or more different types of repeating units.    TECHNOLOGY FOCUS - POLYMERS - Preferred Compound: The high molecular compound is polymerized to obtain high molecular compound of mesh shape. Preferred Definitions:Ar1,Ar2=group containing substituent having cross-linkable group chosen from formulae: -C(R1)=CH2, -C(F)=CF2, -C(=O)-CH=CH(Ar11), -C(=O)-CR5=CH2 and groups of formulae (a-g).    R1-R5=H or alkyl;and    Ar11=optionally substituted (aromatic heterocyclic group or aromatic hydrocarbon group).    EXAMPLE - 1-Bromohexane (28.1 ml) and 3-bromophenol (in g) (36.3) were added to mixture of potassium hydroxide (49.4) and dimethylsulfoxide (220 ml), and stirred at room temperature for 8 hours. The reaction solution was extracted with methylene chloride and the extract was concentrated to obtain 1-bromo-3-hexyloxy-benzene (44.3). The obtained compound (33.10), tris(dibenzylidene acetone)dipalladium (0) chloroform complex (0.673), bis(triphenylphosphino)ferrocene (0.708), 3,4'-diaminodiphenyl ether (13.02) and t-butoxy sodium (14.99) were added to toluene (455 ml). The obtained reaction product (6), diamino compound (0.840), 4,4'-dibromobiphenyl (3.76), t-butoxy sodium (3.26), tris(dibenzylidene acetone)dipalladium (0) chloroform complex (0.125) and tri-t-butylphosphine (0.196) were stirred in toluene and heat refluxed for 2 hours. Bromobenzene (0.190), toluene (25 ml) and diphenylamine (0.410) were further added and stirred to obtain high molecular compound (2.74) having repeating unit of formula (5), weight average molecular weight of 158000 and number average molecular weight of 31000. The high molecular compound was used in a composition for forming organic electroluminescent element. The organic electroluminescent element had excellent durability, luminescent property and high efficiency.