Abstract
Recently, organic transistors controlling organic EL displays and electronic papers have been developed. Organic semiconductors which are the component of organic transistors have advantages such as lightness, flexibility, possibly applying being applied to a large area reasonably. However, they have disadvantages such as low solubility and a low electric conductivity. In this study t-butyl group was introduced into the polynuclear aromatic compounds in order to dissolve in various solvents. Improvement of an electric conductivity by the stacking the compounds employing expansion of the p conjugated system is also the another purpose of this study. At first, synthesis of novel polynuclear aromatic compounds was carried out. Their structure analyzed by 1H-NMR spectra and X-rays structure analysis. The expansion of the p conjugated system in compounds who confirmed by the UV spectrum measurement. In addition, Field effect transistor by compounds was composed and its electric conductivity was measured.
