Abstract Two dicyanopyrazine-containing aromatic compounds, pyrazino [2′, 3′: 9, 10] phenanthro [4, 5-fgh] quinoxaline-5, 6, 12, 13-tetracarbonitrile (PPQD) and pyrazino [2′, 3′: 9, 10] phenanthro [4, 5-fgh] quinoxaline-5, 6, 12, 13-tetracarbonitrile, 2, 9-bis (1, 1- dimethylethyl)(PPQB), which have remarkably high electron affinity and ionization potential, were synthesized and qualified as potential n-type materials for use in solar cells and ...
