Patent ID: 7534899

Claim:
An aromatic enediyne derivative having a structure according to wherein X 1 , X 2 , X 3 , A 1 , and A 2 are each thiophene; wherein R 1 , R 2 , R 3 and R 4 are each independently selected from the group consisting of an amino group, a cyano group, —SiR 1 R 2 R 3 (where R 1 , R 2 , and R 3 are each independently selected from a group consisting of hydrogen and C 1 -C 10 alkyl groups), C 1 -C 20 alkyl groups; and further wherein a and b are 1, c is selected from integers from 0 to 2 inclusive, and the expression a+b+c>0 is satisfied; wherein X 1 , X 2 , X 3 , X 4 , X 5 , and X 6 are each thiophene, R 1 , R 2 , R 3 , R 4 , R 5 , and R 6 are each independently selected from the group consisting of hydrogen, an amino group, a cyano group, and C 1 -C 20 alkyl groups; and further wherein a b, c, d, e and f are selected from integers from 0 to 1 inclusive, and the expression 3≦a+b+c+d+e+f≦5 is satisfied; or wherein X 1 , X 2 , X 3 , X 4 , X 5 , and X 6 are each thiophene, R 1 , R 2 , R 3 , and R 4 are each independently selected from the group consisting of hydrogen, an amino group, a cyano group, —SiR 1 R 2 R 3 (where R 1 , R 2 , and R 3 are each independently hydrogen or a C 1 -C 10 alkyl group), and C 1 -C 20 alkyl groups; and further wherein a, b, c, d, e and f are selected from integers from 0 to 1 inclusive, and the expression 3≦a+b+c+d+e+f≦5 is satisfied.