| 초록 |
A novel dimaine monomer, 4-bithiophenyl-diaminotriphenylamine (2TDATPA) was synthesized and utilized to prepare polyimides. First, 4-bromo-dinitrotriphenylamine (BDNTPA) was prepared from 4-bromoaniline and 1-fluoro-4-nitrobenzene. Then, it was reacted with 5-trimethylstannyl-2-bithiophene (S2T) via Stille coupling reaction, resulting in 4-bithiophenyl-dinitrotriphenylamine (2TDNTPA). Then, it was hydrogenated to afford 4-bithiophenyl-diaminotriphenylamine (2TDATPA). The monomer was characterized by FT-IR, NMR, melting point analyzer and GC/MS, and utilized to prepare polyimides with dianhydrides such as 3,4,9,10-perylenetetracarboxylic dianhydride (PTCDA) and 2,2-bis(3,4-dicarboxyphenyl) hexafluoropropane dianhydride (6FDA). The polymers were synthesized via a conventional two-step process; preparation of poly(amic-acid), followed by solution imidization, and characterized by FT-IR, NMR, TGA, DSC and GPC. In addition, optoelectrical properties were also evaluated by CV, UV-vis and PL. |
