Compound having one of the two general structures I and II: where R 1, R 2, R 3, R 4, R 5, R 6, R 7, R 8 are each independently selected from: -H, -(C 1 -C 12)-alkyl, -O-(C 1 -C 12)-alkyl,-O-(C 6 -C 20)-aryl, - (C 6 -C 20) -aryl, halogen, COO-(C 1 -C 12)-alkyl, CONH-(C 1 -C 12)-alkyl, - (C 6 -C 20)-aryl-CON[(C 1 -C 12)-alkyl] 2, -CO-(C 1 -C 12)-alkyl, -CO- (C 6 -C 20) -aryl, -COOH,-OH, -SO 3 H, -SO 3 Na, -NO 2, -CN, -NH 2, -N[(C 1 -C 12)-alkyl] 2; X and Y are each independently selected from: -(C 1 -C 12)-alkyl, -(C 6 -C 20)-aryl, - (C 6 -C 20) -aryl-(C 1 -C 12)-alkyl, - (C 6 -C 20)-aryl-O-(C 1 -C 12)-alkyl, - (C 1 -C 12) -alkyl-(C 6 -C 20)-aryl, - (C 6 -C 20) -aryl-COO- (C 1 -C 12) -alkyl, - (C 6 -C 20)-aryl-CONH-(C 1 -C 12)-alkyl, -(C 6 -C 20)-aryl-CON[(C 1 -C 12)-alkyl] 2, -(C 4 -C 20)-heteroaryl, -(C 4 -C 20)-heteroaryl-(C 1 -C 12)-alkyl, -(C 5 -C 8)-cycloalkyl-(C 4 -C 20)-aryl-CO-(C 6 -C 20)-aryl, Z is selected from: -(C 1 -C 12)-alkyl-, -(C 6 -C 20)-aryl-, -(C 6 -C 20)-aryl-(C 1 -C 12)-alkyl-, - (C 1 -C 12)-alkyl-(C 6 -C 20)-aryl-, -(C 4 -C 20)-heteroaryl-, -(C 6 -C 20)-aryl-CO-(C 6 -C 20)-aryl-, -(C 6 -C 20)-aryl- (C 6 -C 20) -aryl-; Q is selected from: - (C 1 -C 18)-alkyl-, -(C 1 -C 12)-alkyl-(C 1 -C 20)-aryl-, -(C 1 -C 18)-haloalkyl-, -NH- (C 1 -C 18)-alkyl, where the alkyl, heteroalkyl, cycloalkyl, heterocycloalkyl, aryl and heteroaryl groups mentioned may be substituted. R 1, R 2, R 3, R 4, R 5, R 6, R 7, R 8 are each independently selected from: -H, -(C 1 -C 12)-alkyl, -O-(C 1 -C 12)-alkyl,-O-(C 6 -C 20)-aryl, - (C 6 -C 20) -aryl, halogen, COO-(C 1 -C 12)-alkyl, CONH-(C 1 -C 12)-alkyl, - (C 6 -C 20)-aryl-CON[(C 1 -C 12)-alkyl] 2, -CO-(C 1 -C 12)-alkyl, -CO- (C 6 -C 20) -aryl, -COOH,-OH, -SO 3 H, -SO 3 Na, -NO 2, -CN, -NH 2, -N[(C 1 -C 12)-alkyl] 2; X and Y are each independently selected from: -(C 1 -C 12)-alkyl, -(C 6 -C 20)-aryl, - (C 6 -C 20) -aryl-(C 1 -C 12)-alkyl, - (C 6 -C 20)-aryl-O-(C 1 -C 12)-alkyl, - (C 1 -C 12) -alkyl-(C 6 -C 20)-aryl, - (C 6 -C 20) -aryl-COO- (C 1 -C 12) -alkyl, - (C 6 -C 20)-aryl-CONH-(C 1 -C 12)-alkyl, -(C 6 -C 20)-aryl-CON[(C 1 -C 12)-alkyl] 2, -(C 4 -C 20)-heteroaryl, -(C 4 -C 20)-heteroaryl-(C 1 -C 12)-alkyl, -(C 5 -C 8)-cycloalkyl-(C 4 -C 20)-aryl-CO-(C 6 -C 20)-aryl, -(C 1 -C 12)-alkyl, -(C 6 -C 20)-aryl, - (C 6 -C 20) -aryl-(C 1 -C 12)-alkyl, - (C 6 -C 20)-aryl-O-(C 1 -C 12)-alkyl, - (C 1 -C 12) -alkyl-(C 6 -C 20)-aryl, - (C 6 -C 20) -aryl-COO- (C 1 -C 12) -alkyl, - (C 6 -C 20)-aryl-CONH-(C 1 -C 12)-alkyl, -(C 6 -C 20)-aryl-CON[(C 1 -C 12)-alkyl] 2, -(C 4 -C 20)-heteroaryl, -(C 4 -C 20)-heteroaryl-(C 1 -C 12)-alkyl, -(C 5 -C 8)-cycloalkyl-(C 4 -C 20)-aryl-CO-(C 6 -C 20)-aryl, Z is selected from: -(C 1 -C 12)-alkyl-, -(C 6 -C 20)-aryl-, -(C 6 -C 20)-aryl-(C 1 -C 12)-alkyl-, - (C 1 -C 12)-alkyl-(C 6 -C 20)-aryl-, -(C 4 -C 20)-heteroaryl-, -(C 6 -C 20)-aryl-CO-(C 6 -C 20)-aryl-, -(C 6 -C 20)-aryl- (C 6 -C 20) -aryl-; -(C 1 -C 12)-alkyl-, -(C 6 -C 20)-aryl-, -(C 6 -C 20)-aryl-(C 1 -C 12)-alkyl-, - (C 1 -C 12)-alkyl-(C 6 -C 20)-aryl-, -(C 4 -C 20)-heteroaryl-, -(C 6 -C 20)-aryl-CO-(C 6 -C 20)-aryl-, -(C 6 -C 20)-aryl- (C 6 -C 20) -aryl-; Q is selected from: - (C 1 -C 18)-alkyl-, -(C 1 -C 12)-alkyl-(C 1 -C 20)-aryl-, -(C 1 -C 18)-haloalkyl-, -NH- (C 1 -C 18)-alkyl, - (C 1 -C 18)-alkyl-, -(C 1 -C 12)-alkyl-(C 1 -C 20)-aryl-, -(C 1 -C 18)-haloalkyl-, -NH- (C 1 -C 18)-alkyl,