Circularly conjugated compounds with s are known as aromatic compounds. Since they are generally stable, they are widely used in our daily life, from plastics to pharmaceuticals, dyes, and organic electronics materials. On the other hand, antiaromatic compounds with 4n pi-electrons are not stable and thus are known to decompose or change their structures, which leads to losing their “antiaromatic” properties. From recent studies, it has been proven that antiaromatic compounds exhibit absorption in the near-infrared region, high charge transport properties, and redox properties, but only a limited number of examples is reported.
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Source: Phys.org