Patent ID: 8440828

Claim:
A compound having the formula: wherein: R 1 and R 2 independently are selected from H, a C 1-40 alkyl group, a C 2-40 alkenyl group, a C 2-40 alkynyl group, a C 1-40 haloalkyl group, and a C 3-40 cycloalkyl group, wherein the C 1-40 alkyl group and the C 1-40 haloalkyl group optionally can be substituted with 1-5 substituents independently selected from a —CN, NO 2 , —SO 3 H, —N(R 0 ) 3 + , —COR 0 , and —COOR 0 ; the C 2-40 alkenyl group and the C 2-40 alkynyl group optionally can be substituted with 1-5 substituents independently selected from a halogen, —CN, NO 2 , —SO 3 H, —N(R 0 ) 3 + , —COR 0 , and —COOR 0 ; and the C 3-40 cycloalkyl group optionally can be substituted with 1-5 substituents independently selected from a halogen, —CN, NO 2 , —SO 3 H, —N(R 0 ) 3 + , —COR 0 , —COOR 0 , a C 1-40 alkyl group and a C 1-40 haloalkyl group, wherein R 0 , at each occurrence, independently is H or a C 1-40 alkyl group; R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R 9 , and R 10 , at each occurrence, independently is selected from H, F, Cl, Br, CN, NO 2 , and a C 1-6 haloalkyl group; Z 1 , Z 2 , Z 3 , and Z 4 independently are selected from O, S, and Se, provided that at least one of Z 1 , Z 2 , Z 3 , and Z 4 is S or Se; and m is 1.