Patent ID: 8716484

Claim:
A compound having the following general structure: wherein R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 and R 8 are each independently unsubstituted or selected from the group of mono, di, tri, tetra or penta substitutions selected from the group consisting of hydrogen, deuterium, halide, alkyl, cycloalkyl, heteroalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carbonyl, carboxylic acids, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof; wherein each of R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 and R 8 does not form cyclic rings, and wherein Ar 1 is selected from the group consisting of aryl and heteroaryl.