TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preparation: No preparation method is given. SPECIFIC COMPOUNDS - 5 Compounds (I) are disclosed i.e. (6-(5-(4-(bis-(9,9-dimethyl-9H-fluoren-2-yl)-amino)-phenyl)-thiophen-2-yl)-1,3-dioxo-1H,3H-benzo(de)isoquinolin-2-yl)-acetic acid of formula (IA), (6-(5'-(4-(bis-(9,9-dimethyl-9H-fluoren-2-yl)-amino)-phenyl)-(2,2')bithiophenyl-5-yl)-1-oxo-1H,3H-benzo(de)isoquinolin-2-yl)-acetic acid, (6-(5'-(4-(bis-(7-methoxy-9,9-dimethyl-9H-fluoren-2-yl)-amino)-phenyl)-(2,2')bithiophenyl-5-yl)-1-oxo-1H,3H-benzo(de)isoquinolin-2-yl)-acetic acid, (6-(5'-(4-(bis-(4-hexyloxy-phenyl)-amino)-phenyl)-(2,2')bithiophenyl-5-yl)-1-oxo-1H,3H-benzo(de)isoquinolin-2-yl)-acetic acid and 3-(5'-(4-(bis-(9,9-dimethyl-9H-fluoren-2-yl)-amino)-phenyl)-(2,2')bithiophenyl-5-yl)-7-oxo-7H-benzo(de)benzo(4,5)imidazo(2,1-a)isoquinoline-11-carboxylic acid.    EXAMPLE - Mixture comprising (4-bromophenyl)bis(9,9-dimethyl-9H-fluoren-2-yl)amine (1.66 g), thiophene-2,5-diboronic ester (2 g), potassium carbonate (0.82 g) was dissolved in water/ethanol (5.2 ml), and then tetrakis(triphenylphosphine)palladium(0) (92 mg) and toluene (10 ml) were added to the mixture. The mixture was heated at 85 degrees C under nitrogen and stirred at this temperature for 4 hours. After cooling, the reaction mixture was filtered off with suction. The mother liquor was extracted by shaking with dichloromethane/water. The solvent was removed from the organic phase and the residue was dried to form crude product. A mixture of the crude product (2 g), methyl ester of N-(2-carboxyethyl)-4-chloronaphthalimide (1.33 g), (trisdibenzylideneacetone)dipalladium(0) (50.4 mg), cesium carbonate (1.43 g), and 26.3 mg of tributylphosphine and dioxane was heated to 90 degrees C and stirred for 6 hours. After cooling, the reaction mixture was filtered off with suction and then the solvent was removed from the mother liquor. The crude product was purified by adding n-hexane/ethyl acetate to form protected compound (70 mg). The protected compound was stirred with 200 mg of potassium hydroxide in 10 ml of 1:1 demineralized water:tetrahydrofuran at 60 degrees C for 1 day. The mixture was cooled, and then hydrochloric acid (10 ml) was added to the mixture followed by adding demineralized water to give (6-(5-(4-(bis-(9,9-dimethyl-9H-fluoren-2-yl)-amino)-phenyl)-thiophen-2-yl)-1,3-dioxo-1H,3H-benzo(de)isoquinolin-2-yl)-acetic acid.