Direct CH arylation method using palladium-based catalyst

A method for producing a copolymer of the following Chemical Formula 10 including reacting a first monomer with a second monomer using a Pd-based catalyst, wherein the first monomer is a compound of the following Chemical Formula 3;

• and the second monomer is selected from compounds of the following Chemical Formulas 5 to 9 or a mixture thereof,
• in the Chemical Formula 10, the A has a structure of the following Chemical Formula 13;
• the B is selected from the following Chemical Formulas 15 to 19 or a combination thereof;
• mark * represents a coupled portion;
• and the n is an integer of 30 to 500,
• in the Chemical Formulas, Y, Y′ are each selected from S, O, and N independently;
• the R, R′ each are an alkyl group of C1 to C6 independently;
• the R″ represents a phenyl group;
• the X, X′ are each selected from Br, Cl, and I independently;
• the m is an integer of 1 to 4;
• the Z is selected from Si, C, and N;
• the Ar represents benzene;
• and the X and X′ coupled with the Ar is coupled at position 1,3- or position 1,4- of the Ar.