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Title

Perylene π‐Bridges Equally Delocalize Anions and Cations: Proportioned Quinoidal and Aromatic Content

AuthorsMayorga, Paula; Zeng, Wangdong; Moos, Michael; Holzapfel, Marco; Canola, Sofia; Negri, Fabrizia; Rovira, Concepció ; Veciana, Jaume ; Phan, Hoa; Wu, Jishan; Lambert, Christoph; Casado, Juan
Issue Date7-Oct-2019
AbstractA complete experimental and theoretical study has been carried out for aromatic and quinoidal perylene‐based bridges substituted with bis(diarylamine) and bis(arylimine) groups respectively. The through‐bridge inter‐redox site electronic couplings (VAB) have been calculated for their respective mixed‐valence radical cation and radical anion species. The unusual similitudes of the resulting VAB values for the given structures reveal the intervention of molecular shapes with balanced semi‐quinoidal/semi‐aromatic structures in the charge delocalization. An identical molecular object equally responding to the injection of either positive or negative charges is rare in the field of organic π‐conjugated molecules. However, once probed herein for perylene‐based systems, it can be extrapolated to other π‐conjugated bridges. As a result, this work opens the door to the rational design of true ambipolar bulk and molecular conductors.
Publisher version (URL)http://dx.doi.org/10.1002/anie.201905657
URIhttp://hdl.handle.net/10261/203115
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