ИСТИНА

At present, a wide range of organic hole transport materials based on triphenylamine (TPA) derivatives have been developed, which are important components of organic electronics and photonics devices. Due to the presence of such material properties as high thermal stability, good solubility in organic solvents, film-forming ability, and improved adhesion to the substrate, particular attention is paid to polymers based on TPA. By changing the structure of polymer side chains by introducing various π-spacers and electron-withdrawing groups, the optoelectronic properties of materials can be effectively tuned. By means of donor-acceptor (D-A) interactions, as well as by increasing conjugation in the molecule, it is possible to change the light absorption region, vary the energy of the HOMO and LUMO levels, reduce the band gap of hole-transport materials and improve the output parameters of organic photovoltaic devices. Oxidative polymerization with FeCl3 is the simplest method for the synthesis of polymers based on TPA. This method, unlike cross-coupling reactions, does not require the use of expensive catalysts and toxic organoelement compounds. This work presents D-A polymers based on TFA obtained by oxidative polymerization. Their optical, electrochemical and thermal properties were studied, and primary data were obtained from studying the resulting materials in optoelectronic devices. This work was supported by the Ministry of Science and Higher Education of the Russian Federation (FFSM-2021-0005).