| 초록 |
Recently, conjugated copolymers with electron donor-acceptor have attracted for bulk heterojunction photovoltaic cells because their intramolecular delocalization over the electron-donating and electron-accepting segments can lead to low-band-gap conjugated polymers that enable efficient harvesting of the solar spectrum. Phenothiazine has low and highly reversible first oxidation potentials with pronounced propensities to form stable radical cations. Also, phenothiazine and its derivatives serve as good intramolecular reductive quenchers because they show a facile one electron oxidation, and the PTZ radical cation (PTZ +) is known to have a strong absorption in the visible region. A poly[cyclopenta(2,1-b:3,4-b’)dithiophene] derivative containing phenothiazine units, synthesized by Suzuki coupling reaction, and characterized NMR, UV vis- and photoluminescence spectroscopy. And also, the polymers was used as electron donor to fabricate PSCs with PCBM as electron acceptors. |
