Patent ID: 7692029

Claim:
A star-shaped oligothiophene-arylene compound in which an oligothiophene having p-type semiconductor characteristics is bonded to an arylene having n-type semiconductor characteristics positioned in the central moiety of the molecule, represented by Formula 1 below: wherein Ar is selected from groups represented by Formula 2 below: wherein R1 to R4 are independently hydrogen, hydroxyl, amine group, C1-20 linear, branched or cyclic alkyl, alkoxy, C1-20 akloxyalkyl, alkylarmne group, ester group or amide group; Ar1 is selected from groups represented by Formula 3 below: wherein R1 to R4 are independently hydrogen, hydroxyl, amine group, C1-20 linear, branched or cyclic alkyl, alkoxy, C1-20 akloxyalkyl, alkylamine group, ester group or amide group; Ar1 is selected from groups represented by Formula 4 below: wherein R 14 to R 21 are independently hydrogen, hydroxyl, amine group, C 1-20 linear, branched or cyclic alkyl, alkoxy, C 1-20 alkoxyalkyl, alkylamine group, ester group or amide group; the substituent R is independently hydrogen, hydroxyl, amine group, C 1-20 linear, branched or cyclic alkyl, alkoxy, C 1-20 alkoxyalkyl, alkylamine group, ester group or amide group; n is an integer between 3 and 8; n 1 and n 3 are each independently an integer between 0 and 6; and n 2 is an integer between 2 and 8.