| 초록 |
Triphenylamine-based monomers, containing electron-withdrawing side groups such as cyano and trifluoromethyl were prepared and utilized to synthesize conjugated polymers with 4,7-bis(2-thienyl)-2,1,3-benzothiadiazole (DBT). First, 4-(diphenylamino)benzonitrile (CNTPA) and N,N-diphenyl-4-(trifluoromethyl)benzenamine (3FTPA) were prepared by reacting diphenylamine with 1-bromobenzonitrile or 4-bromobenzotrifluoride, respectively via Pd-catalyzed coupling reaction, followed by bromonation and boration. Next, they were utilized to prepare polymers with DBT by Suzuki coupling reaction. Finally, the polymers were characterized by NMR, FT-IR, GC-MS, TGA, DSC and solubility measurements. In addition, optical and electrical properties were evaluated by fluorescence spectroscopy, UV-Vis spectroscopy and cyclovoltametry (CV). |
