Autor según el artículo: Ramos-Soriano, Javier; Perez-Sanchez, Alfonso; Ramirez-Barroso, Sergio; Illescas, Beatriz M.; Azmani, Khalid; Rodriguez-Fortea, Antonio; Poblet, Josep M.; Hally, Cormac; Nonell, Santi; Garcia-Fresnadillo, David; Rojo, Javier; Martin, Nazario;

Departamento: Química Física i Inorgànica

Autor/es de la URV: Poblet Rius, Josep Maria / Rodríguez Fortea, Antonio

Palabras clave: Triplet quenching Triplet lifetime Photosensitizers Photochemistry Phosphorescence Luminescence Light Hexa-adduct Glycoconjugates Fullerenes Cycloaddition Complexes Carbon C-60 Azide

Resumen: Suitably engineered molecular systems exhibiting triplet excited states with very long lifetimes are important for high-end applications in nonlinear optics, photocatalysis, or biomedicine. We report the finding of an ultra-long-lived triplet state with a mean lifetime of 93 ms in an aqueous phase at room temperature, measured for a globular tridecafullerene with a highly compact glycodendrimeric structure. A series of three tridecafullerenes bearing different glycodendrons and spacers to the C-60 units have been synthesized and characterized. UV/Vis spectra and DLS experiments confirm their aggregation in water. Steady-state and time-resolved fluorescence experiments suggest a different degree of inner solvation of the multifullerenes depending on their molecular design. Efficient quenching of the triplet states by O-2 but not by waterborne azide anions has been observed. Molecular modelling reveals dissimilar access of the aqueous phase to the internal structure of the tridecafullerenes, differently shielded by the glycodendrimeric shell.

Áreas temáticas: Química Medicina ii Medicina i Materiais Interdisciplinar General medicine General chemistry Farmacia Engenharias ii Ciências biológicas iii Ciências biológicas ii Ciências biológicas i Chemistry, multidisciplinary Chemistry (miscellaneous) Chemistry (all) Chemistry Catalysis Astronomia / física

Acceso a la licencia de uso: https://creativecommons.org/licenses/by/3.0/es/

Direcció de correo del autor: antonio.rodriguezf@urv.cat josepmaria.poblet@urv.cat

Identificador del autor: 0000-0001-5884-5629 0000-0002-4533-0623

Página final: 12

Fecha de alta del registro: 2023-02-19

Volumen de revista: 60

Versión del articulo depositado: info:eu-repo/semantics/publishedVersion

Enlace a la fuente original: https://onlinelibrary.wiley.com/doi/10.1002/anie.202104223

URL Documento de licencia: http://repositori.urv.cat/ca/proteccio-de-dades/

Referencia al articulo segun fuente origial: Angewandte Chemie (International Ed. Print). 60 (29): 16109-16118

Referencia de l'ítem segons les normes APA: Ramos-Soriano, Javier; Perez-Sanchez, Alfonso; Ramirez-Barroso, Sergio; Illescas, Beatriz M.; Azmani, Khalid; Rodriguez-Fortea, Antonio; Poblet, Josep (2021). An Ultra-Long-Lived Triplet Excited State in Water at Room Temperature: Insights on the Molecular Design of Tridecafullerenes. Angewandte Chemie (International Ed. Print), 60(29), 16109-16118. DOI: 10.1002/anie.202104223

DOI del artículo: 10.1002/ange.202104223

Entidad: Universitat Rovira i Virgili

Año de publicación de la revista: 2021

Página inicial: 2

Tipo de publicación: Journal Publications