Heptagon-Containing Nanographene Embedded into [10]Cycloparaphenylene

Mora-Fuentes JP, Codesal MD, Reale M, Cruz CM, Jiménez VG, Sciortino A, Cannas M, Messina F, Blanco V, Campaña AG (2023)

Publication Type: Journal article

Publication year: 2023

Journal

Angewandte Chemie International Edition Wiley

Book Volume: 62

Article Number: e202301356

Journal Issue: 21

DOI: 10.1002/anie.202301356

Abstract

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.

Authors with CRIS profile

Juan Pedro Mora Fuentes

Involved external institutions

Università degli Studi di Palermo IT Italy (IT) Universidad de Granada ES Spain (ES)

How to cite

APA:

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, 62(21). https://dx.doi.org/10.1002/anie.202301356

MLA:

Mora-Fuentes, Juan P., et al. "Heptagon-Containing Nanographene Embedded into [10]Cycloparaphenylene." Angewandte Chemie International Edition 62.21 (2023).

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