| 초록 |
In order to overcome the environmental pollution, extensive researches on renewable source of energies have been a greater attention for the scientists during the past decade. In case of indenoindene, it is possible to introduce four alkyl groups in the sp3 carbons in the bicycle, which will enhance the solubility of the polymer, without deforming the conjugation. New conjugated polymers, HS-5528 and HS-5529, were synthesized by the palladium-catalyzed Suzuki polymerization and characterized. The UV edge of HS-5528 was670 nm and band gap was narrow in 1.75eV. The UV edge of HS-5529 was 676 nm and band gap was narrow in 1.31eV. HS-5528 and HS-5529 base on bithiophene imide units show HOMO energy levels at -5.72 and -5.39eV, LUMO energy levels at -3.98 and -4.08 eV. The solubility of polymers is important for OPVs device applications. However, the polymers have poor solubility. It’s difficult to fabrication for solar cells. |
