Patent ID: 7820780

Claim:
A compound of the Formula I: wherein: the A unit is selected from the group consisting of: R 1 is independently selected from the group consisting of a hetero atom containing group and a hydrocarbon group that is optionally substituted at least once with a hetero atom moiety; R 2 and R 3 independently selected from the group consisting of a hydrocarbon group or a substituted hydrogen group; R 4 , R 5 , R 6 , R 7 , R 8 , R 9 , R 10 , and R 11 are independently selected from the group consisting of a nitrogen containing group, a sulfur containing group, a hydroxyl group, a silicon containing group, hydrogen, a halogen, a hetero atom containing group, a hydrocarbon group and a substituted hydrocarbon group; R 13 is selected from the group consisting of R 14 is selected from the group consisting of a hydrocarbon group and a substituted hydrocarbon; and R 15 is selected from the group consisting of wherein Z is an electron withdrawing group.