May be you need a mixture of solvents: a primary solvent consisting of benzene, toluene, acetone, or methylene chloride, the improvement which comprises adding to said solvent solution before the copolymerization reaction, an effective amount of a different secondary solvent consisting of lower alkanols, dimethyl formamide, or water depending on molecular weight of the resulting copolymer.

In order to be able to discuss the possibility of the formation of charge-transfer complexes researcher needs to know not only the solvent but also the monomers involved in the copolymerization, name them, please. It is also necessary to remember that the existence of such complexes is possible only at low temperatures.

Best regards

Hi Akshatha, to form charge transfer complex you need to have electron donor and electron accepter molecule.therefore the solvent you want must be electron acceptor like nitrobenzene .