Patent ID: 7014925

Claim:
A non-polymeric compound having visible-light-emissive, hole-transport, electron-transport, or bipolar-transport properties, having the following structure: wherein X is a trivalent atom, wherein R 1-4 , R 5-8 , R 1′-4′ and R 5′-8′ independently represent hydrogen atoms, alkyl groups, alicyclic groups, aralkyl groups, aryl groups, alkoxy groups, aryloxy groups, heterocyclic groups, amino groups, or organometallic groups, which groups may be substituted or unsubstituted, such that any of the substitutable carbon atoms in Formula II may be substituted with any of said groups, and wherein (Ar) is an alkyl, alkenyl, alkynyl, aryl, aralkyl or organometallic group, which may be substituted or unsubstituted.