Polyfluorene, polythiophene, and polybenzotriazole syntheses were attempted with the goal of creating a block copolymer. Synthesis of polyfluorene was unsuccessful; it is believed that the presence of moisture in the air caused the reaction to fail. Due to this failure, polythiophene was focused on as the donor block of the block copolymer. Polybenzotriazole was used as the acceptor block of the block copolymer. Successful synthesis of each of these molecules was characterized with <sup>1</sup>H and <sup>13</sup>C nuclear magnetic resonance (NMR), mass spectrometry, gel permeation chromatography (GPC), and uv-visible absorption spectroscopy. UV-visible absorption analysis further confirmed polybenzotriazole and polythiophene synthesis with the observance of a shift in wavelength and higher extinction coefficient. The attachment of the donor and acceptor block polymers together to form D-A type copolymer was attempted, and will be studied further in future.

Development in poly-thiophene and poly-benzotriazole block copolymer for use in polymer solar cell

249th National Meeting (2015)

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