SYNTHESIS AND OPTICAL PROPERTIES OF HYPERBRANCHED DONOR - ACCEPTOR CONJUGATED POLYMERS BASED ON PHENOXAZINE, BENZO[C][1,2,5] THIADIAZOLE AND TRIPHENYLAMINE

SYNTHESIS AND OPTICAL PROPERTIES OF HYPERBRANCHED DONOR - ACCEPTOR CONJUGATED POLYMERS BASED ON PHENOXAZINE, BENZO[C][1,2,5] THIADIAZOLE AND TRIPHENYLAMINEThe novel hyperbranched conjugated polymers containing phenoxazine, triphenylamine and benzo[c] [1,2,5] thiadiazole moieties were successfully synthesized via the direct (hetero) arylation polymerization method. The obtained polymers were characterized via 1H NMR, GPC and FTIR to determine the chemical structure of polymers. In addition, the optical properties of polymers were investigated by UV-vis spectroscopies and fluorescent spectroscopies. The band gap of polymers were estimated about 1.93 to 2.5 eV due to the optical onset absorption of polymers. Moreover, the resulted conjugated polymers exhibited the thermal stability up to 350oC that are suitable for organic solar cells application.