TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preparation: No preparation method is given. SPECIFIC COMPOUNDS - 5 Compounds (M1) are specifically claimed i.e. 2-cyano-3-(5-(5-(5-(2,2-dicyano-vinyl)-thiophen-2-yl)-thieno(3,2-b)thiophen-2-yl)-thiophen-2-yl)-acrylonitrile of formula (Ia), 2,2'-(5',5''-(thieno(3,2-b)thiophene-2,5-diyl)bis(2,2'-bithiophene-5',5-diyl))bis(methan-1-yl-1-ylidene)dimalononitrile, 2-cyano-3-(5-(5-(5-(2,2-dicyano-vinyl)-thiophen-2-yl)-3,6-bis-(5-ethyl-thiophen-2-yl)-thieno(3,2-b)thiophen-2-yl)-thiophen-2-yl)-acrylonitrile, 2-cyano-3-(5-(8-(5-(2,2-dicyano-vinyl)-thiophen-2-yl)-6,12-diethyl-6,12-dihydro-6,12-diaza-indeno(1,2-b)fluoren-2-yl)-thiophen-2-yl)-acrylonitrile and 2,2'-(5',5''-(2,5-dimethyl-3,6-dioxo-2,3,5,6-tetrahydropyrrolo(3,4-c)pyrrole-1,4-diyl)bis(2,2'-bithiophene-5',5-diyl))bis(methan-1-yl-1-ylidene)dimalononitrile.    EXAMPLE - 23.9 g 2-((5-Bromothiophen-2-yl)methylene)malononitrile, 44.7 g tributyl(thiophen-2-yl)stannane and 1.15 g tetrakis(triphenylphosphine)palladium(0) were added to 240 ml toluene and mixed. The reaction mixture was stirred at 110 degrees C for 18 hours under nitrogen gas and then cooled to room temperature. Subsequently, the reaction product was filtered and washed with methanol to give 18.1 g of 2-(2,2'-bithiophen-5-ylmethylene)malononitrile. 18.1 g 2-(2,2'-Bithiophen-5-ylmethylene)malononitrile and 13.95 g N-bromo-succinimide were added to 200 ml dimethylformamide. The reaction mixture was stirred at room temperature in dark for 24 hours under nitrogen gas. Subsequently, the reaction resultant was filtered and washed with methanol to give 18.1 g of 2-((5'-bromo-2,2'-bithiophen-5-yl)methylene)malononitrile. 4.65 g 2,5-Bis(trimethylstannyl)thieno(3,2-b)thiophene, 5.73 g 2-((5-bromothiophen-2-yl)methylene)malononitrile and 0.11 g tetrakis(triphenylphosphine)palladium(0) were added to 232 ml toluene. The reaction mixture was stirred at 110 degrees C for 18 hours under nitrogen gas. After cooling to room temperature, the reaction product was filtered and washed several times with acetone, hexane and methanol, respectively to give 4.2 g of 2-cyano-3-(5-(5-(5-(2,2-dicyano-vinyl)-thiophen-2-yl)-thieno(3,2-b)thiophen-2-yl)-thiophen-2-yl)-acrylonitrile.