Synthesis of Poly(3-(2-benzotriazolovinyl)thiophene) (PBVT) Copolymers Containing the Alkyl, Electron-transporting, and Hole-transporting Groups

摘要

(3-(2-Benzotriazolovinyl)thiophene) (BVT) containing an electron-transporting moiety was polymerized through FeCl3 oxidation. In addition, BVT was copolymerized with different functional groups: 3-octylthiophene (OT) containing alkyl groups for improving the solubility in common organic solvents; N-octylcarbazolylene (OcCz) containing hole-transporting groups for improving the optical property; and the alkyl groups for improving the solubility. Soluble p-conjugated poly(3-(2-benzotriazolovinyl)thiophene-co-3-(2-benzotriazoloethylthiophene)-co-N-octylcarbazolene) ([(BVT)(n)-(BET)(m)-OcCz(2))(y)) copolymer was synthesized. (HNMR)-H-1 analysis was used to verify the structure of the polyBVT copolymers. Especially, the emission of the ([(BVT)(n)-(BET)(m)-OcCz(2)](y)) copolymer (662 nm) was red-shifted by about 64 nm, compared to that of poly(3-(2-benzotriazolo-ethyl) thiophene) (polyBET, 598 nm).