Rajalingam Agneeswari, Vellaiappillai Tamilavan, Myungkwan Song, Jae-Wook Kang, Sung-Ho Jin and Myung Ho Hyun Synthesis of polymers containing 1,2,4-oxadiazole as an electron-acceptor moiety in their main chain and their solar cell applications Journal of Polymer Science Part A: Polymer Chemistry 51
New electron-accepting monomer incorporating 1,2,4-oxadiazole as an electron-accepting moiety was prepared and copolymerized with electron rich N-aryl dithieno pyrrole-based monomer to afford P1. To extend the absorption of P1, thiophene-benzothiadiazole-thiophene and benzothiadiazole units were incorporated in P1 main chain to afford P2 and P3, respectively. P4 was prepared to evaluate the potential of the N-aryl dithienopyrrole unit of P3. Among them, P3 showed broad absorption and high photovoltaic performances.
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