NOVELTY - Photoactive copolymer comprising aryl repeating units (Q), is claimed.    USE - The photoactive copolymer is useful in bulk heterojunction solar cells and electronic devices including photovoltaic devices, organic light emitting devices, organic photovoltaics, organic filed effect transistors, transistors, batteries, printed electronics, and sensors (all claimed).    ADVANTAGE - The photoactive copolymer improves power conversion efficiency in bulk heterojunction solar cells and electronic devices, and can be easily and economically produced with less energy consumption.    DETAILED DESCRIPTION - Photoactive copolymer comprising aryl units of formula (-(A1-A2)-) (Q), is claimed.    A1 = electron donating unit; and    A2 = alkylfuro-(3,4-c)pyrrole-4,6-dione or alkylselenopheno-(3,4-c)pyrrole-4,6-dione-derivative.    INDEPENDENT CLAIMS are included for:    (1) a co-monomer repeat unit comprising an alkylfuro-(3,4-c)pyrrole-4,6-dione-derivative or an alkylselenopheno-(3,4-c)pyrrole-4,6-dione-derivative;    (2) preparing a selenopheno(3,4-c)pyrrole-4,6-dione derivative of formula (IA), comprising heating a reaction mixture comprising selenophene-3,4-dicarboxylic acid and an amine or alkylamine under conditions to provide (IA);    (3) preparing a furo(3,4-c)pyrrole-4,6-dione derivative of formula (IB) or (IC), comprising reacting furo-3,4-dicarbonyl dichloride and an amine or an alkylamine under conditions, or reacting 2,5-dibromo-furan-3,4-dicarbonyl dichloride and an amine or alkylamine under conditions to provide (IB) or (IC); and    (4) a process-I for preparing furo-(3,4-c)pyrrole-4,6-dione-based or selenopheno-(3,4-c)pyrrole-4,6-dione-based copolymers, comprising reacting an activated furo-(3,4-c)pyrrole-4,6-dione or an activated selenopheno-(3,4-c)pyrrole-4,6-dione-derivative and an electron donating moiety in the presence of one or more catalysts and one or more ligands under conditions for direct heteroarylation polymerization of the furo-(3,4-c)pyrrole-4,6-dione derivative or selenopheno-(3,4-c)pyrrole-4,6-dione-derivative and the electron donating moiety.    R9 = H or 1-20C-alkyl.