Synthesis of branched conjugated copolymers based on triphenylamine and 3-hexylthiophene units

Abstract The branched conjugated copolymer based on triphenylamine and 3-hexylthiophene has been synthesized via Suzuki polycondensation reaction in the presence of Pd(PPh3)4 and K2CO3 as catalytic system. This conjugated polymer named poly(triphenylamine-branched-3-hexylthiophene) (P(TP-b-3HT)). The reaction was carried out at 100oC in 24 hours in the toluene media. The average molecular weight of obtained polymers was 42000 g/mol by gel permeation chromatography (GPC) with polydispersity index of 2.2. The structure of P(TP-b-3HT) was determined by 1H NMR, and optical properties of obtained polymer was characterized via UV-Vis.Tóm tát Mot loai polyme dan dien moi voi cau truc mach nhanh duoc tong hop tren cac don vi triphenylamine va 3-hexylthiophene bang phan ung trung hop Suzuki trong su hien dien cua he xuc tac Palladium phosphine (Pd(PPh3)4) va muoi kalicarbonate (K2CO3). Polyme dan dien nay duoc dat ten la poly(triphenylamine-branched-3-hexylthiophene) (P(TP-b-3HT)). Phan ung trung hop polyme duoc tien hanh o 100oC trong 24 gio trong dung moi toluene. Trong luong phan tu khoi trung binh cua polyme thu duoc la 24000 g/mol duoc phan tich qua phuong phap sac ky cot (GPC), polyme co do da phan tan trong luong phan tu la 1.8. Cau truc hoa hoc cua polyme duoc xac dinh qua pho cong huong tu hat nhan proton (1H NMR), va tinh chat quang cua polyme duoc danh gia qua cac phuong phap phan tich nhu la pho hap thu UV-vis.