Heptagon-Containing Nanographene Embedded into [10]Cycloparaphenylene Mora Fuentes, Juan P. Domínguez Codesal, Marcos Moreno Cruz, Carlos Jiménez, Vicente G. Blanco Suárez, Víctor We report the synthesis and characterization of a novel type of nanohoop, consisting of a cycloparaphenylene derivative incorporating a curved heptagon-containing π-extended polycyclic aromatic hydrocarbon (PAH) unit. We demonstrate that this new macrocycle behaves as a supramolecular receptor of curved π-systems such as fullerenes C60 and C70, with remarkably large binding constants (ca. 107 M−1), as estimated by fluorescence measurements. Nanosecond and femtosecond spectroscopic analysis show that these host-guest complexes are capable of quasi-instantaneous charge separation upon photoexcitation, due to the ultrafast charge transfer from the macrocycle to the complexed fullerene. These results demonstrate saddle-shaped PAHs with dibenzocycloheptatrienone motifs as structural components for new macrocycles displaying molecular receptor abilities and versatile photochemical responses with promising electron-donor properties in host-guest complexes. 2023-06-06T10:17:52Z 2023-06-06T10:17:52Z 2023 journal article Mora-Fuentes, J. P., Codesal, M. D., Reale, M., Cruz, C. M., Jiménez, V. G., Sciortino, A., ... & Campaña, A. G. (2023). Heptagon‐Containing Nanographene Embedded into [10] Cycloparaphenylene. Angewandte Chemie International Edition, e202301356.[https://doi.org/10.1002/ange.202301356] https://hdl.handle.net/10481/82278 10.1002/ange.202301356 eng http://creativecommons.org/licenses/by-nc/4.0/ open access Atribución-NoComercial 4.0 Internacional Wyley