A compound having formula: wherein X 1, X 2, X 3, X 4, and X 5 are each independently C or N, wherein at least one of X 1, X 2, X 3, X 4, and X 5 is C and when X 1, X 2, X 3, X 4, or X 5 is N, the corresponding R 10, R 11, R 12, R 13, or R 14 is absent; one of R 10, R 11, R 12, R 13, and R 14 is where R a and R b are each independently selected from the group consisting of hydrogen, C1-C6 alkyl, and C1-C6 alkoxy; R 18 and R 19 are each independently selected from the group consisting ofhydrogen and C1-C6 alkyl; and q is an integer from 0 to 3; R 7, R 8, and R 9 are each independently selected from the group consisting of: hydrogen, halogen, a sulfonamide group, a nitro group, an -NH 2 group or the group -NR'R" where each R' and R" is independently hydrogen, or a C 1-6 alkyl or aryl group, a carboxylate group, an aryl sulfonyl group, C1-C6 alkyl, C1-C6 alkoxy, and C2-C6 alkenyl; the remaining members of R 10, R 11, R 12, R 13, and R 14, are each independently selected from the group consisting of: hydrogen, halogen, a hydroxyl group, a sulfonamide group, a nitro group, an -NH 2 group or the group -NR'R" where each R' and R" is independently hydrogen, or a C 1-6 alkyl or aryl group, a carboxylate group, an aryl sulfonyl group, C1-C6 alkyl, C1-C6 alkoxy, and C2-C6 alkenyl; provided that when R 10, R 11, R 12, R 13, or R 14 is a hydroxyl group, R 7, R 8, and R 9 are each independently selected from the group consisting of: hydrogen, halogen, C1-C6 alkyl, C1-C6 alkoxy, and C2-C6 alkenyl; aryl is a group containing an unsaturated aromatic carbocyclic group of from 6 to 22 carbon atoms having a single ring, one or more rings, or multiple fused rings, wherein at least one ring is aromatic; R 3 is methoxy or allyl; n and m are each independently integers from 1 to 3; R 4 and R 5 are each independently CH or N; A is O or S; R 6 is hydrogen or C1-C6 alkyl; X is oxygen; and R 2 is hydrogen or C1-C6 alkyl. X 1, X 2, X 3, X 4, and X 5 are each independently C or N, wherein at least one of X 1, X 2, X 3, X 4, and X 5 is C and when X 1, X 2, X 3, X 4, or X 5 is N, the corresponding R 10, R 11, R 12, R 13, or R 14 is absent; one of R 10, R 11, R 12, R 13, and R 14 is where R a and R b are each independently selected from the group consisting of hydrogen, C1-C6 alkyl, and C1-C6 alkoxy; R 18 and R 19 are each independently selected from the group consisting ofhydrogen and C1-C6 alkyl; and q is an integer from 0 to 3; R 7, R 8, and R 9 are each independently selected from the group consisting of: hydrogen, halogen, a sulfonamide group, a nitro group, an -NH 2 group or the group -NR'R" where each R' and R" is independently hydrogen, or a C 1-6 alkyl or aryl group, a carboxylate group, an aryl sulfonyl group, C1-C6 alkyl, C1-C6 alkoxy, and C2-C6 alkenyl; the remaining members of R 10, R 11, R 12, R 13, and R 14, are each independently selected from the group consisting of: hydrogen, halogen, a hydroxyl group, a sulfonamide group, a nitro group, an -NH 2 group or the group -NR'R" where each R' and R" is independently hydrogen, or a C 1-6 alkyl or aryl group, a carboxylate group, an aryl sulfonyl group, C1-C6 alkyl, C1-C6 alkoxy, and C2-C6 alkenyl; provided that when R 10, R 11, R 12, R 13, or R 14 is a hydroxyl group, R 7, R 8, and R 9 are each independently selected from the group consisting of: hydrogen, halogen, C1-C6 alkyl, C1-C6 alkoxy, and C2-C6 alkenyl; aryl is a group containing an unsaturated aromatic carbocyclic group of from 6 to 22 carbon atoms having a single ring, one or more rings, or multiple fused rings, wherein at least one ring is aromatic; R 3 is methoxy or allyl; n and m are each independently integers from 1 to 3; R 4 and R 5 are each independently CH or N; A is O or S; R 6 is hydrogen or C1-C6 alkyl; X is oxygen; and R 2 is hydrogen or C1-C6 alkyl.