| 초록 |
New semiconducting polymer with alkoxy substituted terthiophene,as the electron rich unit, and 2,2-(1,5-pentamethylene)-2H-benzimidazole (PMBI) ,as the electron deficient unit, was synthesized using Stille polymerization. The advantage of PMBI is higher solubility of the polymer while keeping the copla- narity of the backbone as compared to the benzothiadiazole moiety of PCDTBT. In PMBI, the sulfur at 2-position of BT unit was replaced with the carbon of cyclohexane to make a highly soluble electron defi-cient moiety while keeping the 1,2-quinoidform of BT unit. The polymer, PTBHOTPMBI, exhibits more red shifted absorption peak as compared to the polymers with benzothiadiazole unit. The PTBHOTPMBI thin film shows two broad absorption bands with peaks at 475 and 755nm and an absorption onset at 943 nm. |
