Tetrazolo[1,5-]pyridine-Containing π-Conjugated Systems: Synthesis, Properties, and Semiconducting Characteristics.

The incorporation of an electron-accepting unit into π-conjugated systems is an important approach to modulate the physical properties of such molecules. To investigate the potential of tetrazolo[1,5-]pyridine as an electron-accepting unit, a series of diarylated tetrazolo[1,5-]pyridine derivatives was synthesized by treating the corresponding diarylated pyridine -oxide with diphenylphosphoryl azide. Thermogravimetric analyses of these molecules indicated that they possessed good thermal stability. The bithiophene-substituted tetrazolo[1,5-]pyridine compound showed stable transistor characteristics under repeated bias conditions.