Multimodal Light-Harvesting Soft Hybrid Materials: Assisted Energy Transfer upon Thermally Reversible Gelation
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Other documents of the author: Felip-León, Carles; Guzzetta, F.; Julian-Lopez, Beatriz; Galindo, Francisco; Miravet, Juan
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comunitat-uji-handle2:10234/7053
comunitat-uji-handle3:10234/8639
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Title
Multimodal Light-Harvesting Soft Hybrid Materials: Assisted Energy Transfer upon Thermally Reversible GelationAuthor (s)
Date
2017Publisher
American Chemical SocietyBibliographic citation
FELIP-LEÓN, Carles, et al. Multimodal Light-Harvesting Soft Hybrid Materials: Assisted Energy Transfer upon Thermally Reversible Gelation. The Journal of Physical Chemistry C, 2017, vol. 121, no 39, p. 21154-21159.Type
info:eu-repo/semantics/articlePublisher version
http://pubs.acs.org/doi/abs/10.1021/acs.jpcc.7b06441Version
info:eu-repo/semantics/submittedVersionSubject
Abstract
Multimodal light-harvesting soft systems able to absorb UV-to-NIR radiations and convert into visible emissions have drawn much attention in the last years in order to explore new areas of application in energy, ... [+]
Multimodal light-harvesting soft systems able to absorb UV-to-NIR radiations and convert into visible emissions have drawn much attention in the last years in order to explore new areas of application in energy, photonics, photocatalysis, sensors, and so forth. Here, we present a new hybrid system combining a supramolecular photonic gel of naphthalimidederived molecules self-assembled into fibers and upconverting NaYF4:Yb/Tm nanoparticles (UCNPs). The hybrid system presented here manipulates light reversibly as a result of an optical communication between the UCNPs and the photoactive gel network. Upon UV irradiation, the system shows the characteristic emission at 410 nm from the photoactive organomolecule. This emission is also activated upon 980 nm excitation thanks to an efficient energy transfer from the UCNPs to the fibrillary network. Interestingly, the intensity of this emission is thermally regulated during the reversible assembly or disassembly of the organogelator molecules, in such a way that gelator emission is only observed in the aggregated state. Additionally, the adsorption of the UCNPs with the supramolecular gel fibers enhances their emissive properties, a behavior ascribed to the isolation from solvent quenchers and surface defects, as well as an increased IR light scattering promoted by the fibrillary network. The reported system constitutes a unique case of a thermally regulated, reversible, dual UV and IR light-harvesting hybrid soft material. [-]
Investigation project
Ministerio de Economía y Competitividad of Spain (grants CTQ2015-71004-R and MAT2015-64139-C4-1-R) and Universitat Jaume I (grants P1.1B2015-76 and P1.1B2014-21)Rights
© 2017 American Chemical Society.
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