The current study represents fascinating young and fast growing scientific field - Organic Electronics. Three main goals were pursued in the present work: design, synthesis and characterization of well-defined benchmark conjugated polymers; design, synthesis and characterization of new highly efficient molecular p-dopants; investigation of the doping process of conjugated polymers in film and solution; study of charge-transfer complexes upon their interactions. As a result of the study, development in synthesis of DA conjugated copolymers and new dopants as well as improvements in understanding of the structure-property relationship upon the molecular doping of process are expected.