Due to their unique combination of plastic and semiconductor properties, conjugated polymers have become an interesting new class of materials for technological devices, with applications including light emitting diodes, photovoltaics, and near IR sensors.  Low band gap thieno[3,4-b]pyrazines have demonstrated potential in several device applications and thus development of new methods toward tuning their electronic properties is of great interest.  In 2008 the Rasmussen group produced a series of new thieno[3,4-b]pyrazine monomers which allow an increased control of the electronic properties by varying the side chains at the 2- and 3- positions. The use of side chains, rather than modification of the polymer backbone, should allow tuning of electronic properties while minimizing changes to bulk physical properties such as pi-stacking and morphology. Preparation and characterization of new series of thieno[3,4-b]pyrazine-based polymers will be presented in an attempt to illustrate potential tuning effects.

Application of side chains to tune properties of thieno[3,4-<i>b</i>]pyrazine-based polymers

243rd National Meeting (2012)

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Application of side chains to tune properties of thieno[3,4-b]pyrazine-based polymers