Highly stable deep red-to-NIR OLEDs with an external quantum efficiency of 4.9% from room temperature nanostructured columnar fluids based on hetero atom bay-annulated perylene bisimides

A series of electron deficient perylene bisimides, bay-annulated with hetero atoms such as N, S, and Se exhibiting deep red to NIR electroluminescence with high EQE and room temperature columnar mesomorphism are reported.