Abstract
Recently, organic semiconductors have been studied extensively as materials for electro luminescence and field-effect transistors. The organic semiconductors which are the component of organic transistors have advantages such as lightness, flexibility, application for a large area. However, they have disadvantage such as a low electric conductivity, a low stability in the atmosphere and a low reproducibility. On the other hand pyrenes have characteristics such as large -conjugated systems and stability in air. Thus, in this study novel fused aromatic ring compounds consisting of the pyrene unit have been synthesized and characterized by their UV-vis spectra, CV and the displacement current measurement (DCM) technique. The expansion of the conjugated system in those compounds was indicated by the UV-vis spectra. And the stability in the atmosphere was much increased.
