Dicyanopyrazine-Containing Fused Aromatic Molecules: Potential n-Type Materials for Use in Optoelectronic Devices

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 organic light-emitting diodes.

Keywords:

• Blue
• high electron affinity
• n-type
• optoelectronic devices

ACKNOWLEDGMENTS

We thank the National Natural Science Foundation of China (20704002 and 21072026) and the Fundamental Research Funds for the Central Universities (DUT10LK16) for financial support of this work.

Notes

^a Measured in CH₂Cl₂ at a concentration of 1.0 × 10⁻⁵ mol L⁻¹.

^b Related to quinine sulfate as a standard.

^a Energy band gap, determined from solid films by absorption edge technique.

^b Onset potential of the first reduction wave.

^c .

^d IP = EA + E _g .