Heptagon-Containing Nanographene Embedded into [10]Cycloparaphenylene
Metadatos
Mostrar el registro completo del ítemAutor
Mora Fuentes, Juan P.; Domínguez Codesal, Marcos; Moreno Cruz, Carlos; Jiménez, Vicente G.; Blanco Suárez, VíctorEditorial
Wyley
Fecha
2023Referencia bibliográfica
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]
Patrocinador
Junta de Andalucia-Consejeria de Universidad, Investigacion e Innovacion and FEDER(ERDF) "A way of making Europe" P18-FR-2877; ERDF "A way of making Europe"; Universidad de Granada / CBUAResumen
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.