Acenes and in particular heteroacenes are in the picture as organic electron-carrier materials. The pyrazine compound on the left recently described by Shaobin Miao et al. (DOI) is a promising candidate. In the solid state the intrastack distance is only 330 picometer compared to 380 pm for the same acene without the alkyne side groups and better pi stacking means better electron mobility.
As a sort of side show the researchers compared the diazine with its dihydroazine cousin which can be obtained by hydrogenation using Wilkinson's catalyst. This compound is unstable and easily converts back to the diazine by oxydation with air.