Coexistence of structurally similar but electronically distinct isomers of delocalized cation radicals as a basis for the development of functional materials.

Certain low-symmetry aromatic molecules with a small HOMO/HOMO-1 energy gap might co-exist as electronic isomers in their cation radical states that differ only in bond lengths yet have distinct optical and electronic properties. These electronic isomers are sensitive to the environment and might be used for the development of novel functional materials.