RT Journal Article
T1 An Ultra‐Long‐Lived Triplet Excited State in Water at Room Temperature: Insights on the Molecular Design of Tridecafullerenes
A1 Ramos Soriano, Javier
A1 Pérez Sánchez, Alfonso
A1 Ramírez Barroso, Sergio
A1 Illescas, Beatriz M.
A1 Azmani, Khalid
A1 Rodríguez Fortea, Antonio
A1 Poblet, Josep M.
A1 Hally, Cormac
A1 Nonell, Santi
A1 García Fresnadillo, David
A1 Rojo, Javier
A1 Martín León, Nazario
AB 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 C60 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 O2 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.
PB Wiley-VCH
SN 1433-7851
YR 2021
FD 2021
LK https://hdl.handle.net/20.500.14352/6843
UL https://hdl.handle.net/20.500.14352/6843
LA eng
NO CRUE-CSIC (Acuerdos Transformativos 2021)
NO Ministerio de Economía y Competitividad (MINECO)
NO Centro de Excelencia Severo Ochoa
NO Generalitat de Catalunya
NO European Social Funds and the SUR del DEC de la Generalitat de Catalunya
DS Docta Complutense
RD 28 abr 2024