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The effects of cyclic conjugation and bending on the optoelectronic properties of paraphenylenes.

Cycloparaphenylenes (CPPs) have optoelectronic properties that are unique when compared to their acyclic oligoparaphenylene counterparts. The synthesis and characterization of two bent heptaphenyl-containing macrocycles has been achieved in order to probe the effects of bending and cyclic conjugation on the properties of the CPPs. The study suggests that both bending and cyclic conjugation play a role in the novel properties of the CPPs.