Acenes [n]ac, consisting of linearly fused benzene rings, are important materials for organic electronics and are currently in the focus of materials research. Reactivity increases among the acene series significantly with length, causing instability for acenes longer than hexacene.
The acenes beyond hexacene are assumed to be notoriously unstable, but are valuable for studying the transition from stable organic molecules to zig-zag graphene nanoribbons that may be metallic in the limit of infinite length. To allow experimental investigations of larger acenes, we have developed synthetic access to acenes up to undecacene ac. We report on the properties of those higher acenes, in particular with respect to their optical and magnetic properties.
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