| 초록 |
A novel dimaine monomer, 2,2'-bis(4,4'-diaminophenyl)bithiophene (2TDA), containing thiophene moiety, was synthesized and utilized to prepare polyimides with dianhydrides, containing fluorine groups. The monomer, 2TDA, prepared by bromination of bithiophene (2T), providing 2,2'-bromobithiophene (2Br2T) which was further reacted with 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborola-2-yl)aniline (BAP) via Suzuki coupling reaction. The monomer was characterized by FT-IR, NMR, melting point analyzer and GC/MS. Then, it was utilized to prepare polyimides with dianhydrides containing fluorine groups, such as 3,6-di(3',5'-bis(trifluoromethyl)phenyl pyromellitic dianhydride (12FPMDA) and 3,6-di(4'-trifluoro-methylphenyl)pyromellitic dianhydride (6FPMDA). The polyimides were characterized by FT-IR, NMR, TGA, DSC and GPC, and optoelectronic properties were also evaluated by CV, UV-vis and PL. |
