TECHNOLOGY FOCUS - POLYMERS - Preparation (claimed): No preparation method is given. Preferred Component: The polymer comprises one or more of 34 repeating units, e.g. compound of formula (A-1). EXAMPLE - A tube containing dimethyl formamide (DMF) (3.5 ml) and dry toluene (3.5 ml), (1,5-cyclooctadiene)nickel (0) (64 mg), 2,2'-bipyridyl (36 mg), and 1,5-cyclooctadiene (28 mu l) was heated under argon at 80 degrees C for 30 minutes. The 2,7-dichloro-(4,5,9,10-tetraphenyl)-pyrene derivative (0.11 g) was dissolved in dry toluene (5 ml) and added under argon to the solution. The reaction mixture was maintained at 80 degrees C for 3 days in the dark. Bromobenzene (0.1 ml) was added to reaction mixture. The mixture was allowed to react for another day. The reaction mixture was then poured into concentrated hydrochloric acid/methanol 1:1 (300 ml). The isolated polymer was dissolved in dichloromethane and reprecipitated in methanol. The residue was purified to wash off the small molecules for 2 days in acetone. The residue was dissolved in tetrahydrofuran (THF) and precipitated from methanol and dried. Yield 0.056 g (54%). A sample tube for microwave containing DMF (3 ml) and dry toluene (2 ml), (1,5-cyclooctadiene)nickel (0) (58 mg), 2,2'-bipyridyl (33 mg), and 1,5-cyclooctadiene (26 mu l) was heated under argon at 80 degrees C for 30 minutes. The 2,7-dichloropyrene derivative was dissolved in dry toluene (3 ml) and added under argon to the solution. The reaction mixture was maintained and reacted in a microwave at 80 degrees C (80 W, 60 minutes). Bromobenzene (0.2 ml) was added to the reaction mixture and the mixture was allowed to react in the microwave (80 W, 30 minutes). The reaction mixture was then poured into concentrated hydrochloric acid/methanol 1:1 (300 ml). The precipitated polymer was filtered and dissolved in dichloromethane and reprecipitated in methanol. The residue was purified to wash off the small molecules for 2 days in acetone. The residue was dissolved in THF and precipitated from methanol and dried. Yield 66 mg (66%).