TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Composition: The small organic molecules of triarylamine are chosen from N,N'-diphenyl-N,N'-di(3-tolyl)-4-benzidine, N,N'-di-((1-naphthyl)-N,N'-diphenyl)-1,1'-biphenyl-4,4'-diamine, 4,4',4"-tris(N-3-methylphenyl-N-phenylamino)triphenylamine, 4,4'4"-tris(N,N-diphenylamino)triphenylamine, 4,4',4"-tris(N-3'-methylphenyl-N-phenylamino)triphenylamine and 4,4',4"-tris(N-2-methylphenyl-N-phenylamino)triphenylamine.The substituted modified triarylamine derivative is chosen from tri(o, p or m-terphenyl-4-yl)amine, N,N'-di(biphenyl-2-yl)-N,N'-diphenyl-1,1'-biphenyl-4,4'-diamine, N,N'-di(biphenyl-3-yl)-N,N'-diphenyl-1,1'-biphenyl-4,4'-diamine, N,N'-di(biphenyl-4-yl)-N,N'-diphenyl-1,1'-biphenyl-4,4'-diamine, 1,3,5-tris(o, p or m-chlorophenyl-phenylamino)benzene, 1,3,5-tris(o, p or m-bromophenyl-phenylamino)benzene, 4,4'-(N,N'-bisiminostilbene)biphenyl and 4,4'-(N,N'-iminodibenzyl)biphenyl. The triarylamine oligomer is 4-(4-((4-(4-(bis(3-methylphenyl)amino)phenyl)phenyl)(4-methylphenyl)amino)phenyl)-N,N-bis(3-methylphenyl)aniline, N-(4-(4-(bis(3-methylphenyl)methyl)phenyl)phenyl)-N-(3-methylphenyl)-4-(4-((4-methylphenyl)(4-(4-((4-(4-((3-methylphenyl)(phenyl)methyl)phenyl)phenyl)(phenyl)amino)phenyl)phenyl)amino)phenyl)aniline, 4-(4-((4-(4-(bis(3-methylphenyl)amino)phenyl)phenyl)(4-methylphenyl)amino)phenyl)-N-(4-(4-(bis(3-methylphenyl)methyl)phenyl)phenyl)-N-(3-methylphenyl)aniline or 4-(4-(bis(4-(4-(bis(3-methylphenyl)amino)phenyl)phenyl)amino)phenyl)-N,N-bis(3-methylphenyl)aniline. Preferred Process: The triarylamine derivative is synthesized by Ullmann reaction of corresponding diarylamine and arene in cuprous chloride, phenanthroline, potassium hydroxide and phase transfer catalyst using toluene as solvent, heating and refluxing under protection of argon gas, reacting, separating, decoloring and purifying.    TECHNOLOGY FOCUS - POLYMERS - Preferred Composition: The polymer of triarylamine derivative is of formulae (I)-(IV).n=not defined.N.B. n is not defined.