Pyrene-Fullerene C(60) Dyads as Light-Harvesting Antennas

A series of pyrene-fullerene C(60) dyads bearing pyrene units (PyFC(12), PyFPy, Py(2)FC(12) and PyFN) were synthesized and characterized. Their optical properties were studied by absorption and fluorescence spectroscopies. Dyads were designed in this way because the pyrene moeities act as light-harv...

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Detalles Bibliográficos
Autores principales: Zaragoza-Galán, Gerardo, Ortíz-Palacios, Jesús, Valderrama, Bianca X., Camacho-Dávila, Alejandro A., Chávez-Flores, David, Ramos-Sánchez, Víctor H., Rivera, Ernesto
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2013
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6271591/
https://www.ncbi.nlm.nih.gov/pubmed/24381052
http://dx.doi.org/10.3390/molecules19010352
Descripción
Sumario:A series of pyrene-fullerene C(60) dyads bearing pyrene units (PyFC(12), PyFPy, Py(2)FC(12) and PyFN) were synthesized and characterized. Their optical properties were studied by absorption and fluorescence spectroscopies. Dyads were designed in this way because the pyrene moeities act as light-harvesting molecules and are able to produce “monomer” (PyFC(12)) or excimer emission (PyFPy, Py(2)FC(12) and PyFN). The fluorescence spectra of the dyads exhibited a significant decrease in the amount of pyrene monomer and excimer emission, without the appearance of a new emission band due to fullerene C(60). The pyrene fluorescence quenching was found to be almost quantitative, ranging between 96%–99% depending on the construct, which is an indication that energy transfer occurred from one of the excited pyrene species to the fullerene C(60).

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