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Naphthalene diimides have received much attention due to their high electron affinities, high electron mobility, and good thermal and oxidative stability, therefore making them promising candidates for a variety of organic electronic applications. However, π-extended naphthalene diimides with lower HOMO-LUMO gaps and higher stability have only been developed recently because of the synthetic difficulties. This account describes recent developments in the structures, synthesis, properties, and applications of π-extended naphthalene diimides, including pure-carbon and heterocyclic acene diimides, from our research group.
Li et al. (Thu,) studied this question.