ИСТИНА

The rapid proliferation of various wearable electronic devices necessitates the utilization of high-performance organic light-emitting diodes (OLEDs), which involves the exploration of novel materials.1,2 Three generations of OLED materials exist: fluorescent organic materials (1st generation), phosphorescent organo-metallic complexes (2nd generation), and organic molecules featuring thermally activated delayed fluorescence (TADF; 3th generation). It is known that the latest material class can attain 100% internal quantum efficiency due to its ability to enhance emission from the singlet state via reverse intersystem crossing and a small energetic gap between singlet and triplet states. Polymeric light-emitting diodes (PLEDs) constitute a promising subset of OLED technologies consisting of polymers endowed with electroluminescent properties enhanced by TADF. Several PLEDs with various acceptor content have been synthesized and characterized.3-5 Synthetic scheme includes concurrent obtaining of precursors. Acceptor prototype is synthesized via sequential cyanuric acid substitution using 4-bromostyrene and phenylboronic acid.6 Donor prototype is synthesized via Buchwald–Hartwig reaction under various conditions. Polymers are obtained by free-radical polymerization and hydrosililation addition to polymethylsiloxane-60. Purity and structures are identified by GPC and 1H NMR analysis accordingly. The optical study and TADF properties of polymers are carried out for THF solutions and films. Acknowledgements This work was supported by FFSM (project FFSM-2024-0003).