Autor segons l'article: 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;
Departament: Química Física i Inorgànica
Autor/s de la URV: Poblet Rius, Josep Maria / Rodríguez Fortea, Antonio
Paraules clau: Triplet quenching Triplet lifetime Photosensitizers Photochemistry Phosphorescence Luminescence Light Hexa-adduct Glycoconjugates Fullerenes Cycloaddition Complexes Carbon C-60 Azide
Resum: 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.
Àrees temàtiques: 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
Accès a la llicència d'ús: https://creativecommons.org/licenses/by/3.0/es/
Adreça de correu electrònic de l'autor: antonio.rodriguezf@urv.cat josepmaria.poblet@urv.cat
Identificador de l'autor: 0000-0001-5884-5629 0000-0002-4533-0623
Pàgina final: 12
Data d'alta del registre: 2024-02-11
Volum de revista: 60
Versió de l'article dipositat: info:eu-repo/semantics/publishedVersion
Enllaç font original: https://onlinelibrary.wiley.com/doi/10.1002/anie.202104223
URL Document de llicència: http://repositori.urv.cat/ca/proteccio-de-dades/
Referència a l'article segons font original: Angewandte Chemie (International Ed. Print). 60 (29): 16109-16118
Referència 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 de l'article: 10.1002/anie.202104223
Entitat: Universitat Rovira i Virgili
Any de publicació de la revista: 2021
Pàgina inicial: 2
Tipus de publicació: Journal Publications
Repositori URV