RT Journal Article
T1 Upconverting nanoparticle to quantum dot Förster resonance energy transfer
A1 Marin, Riccardo
A1 Labrador Páez, Lucía
A1 Skripka, Artiom
A1 Haro González, Patricia
A1 Benayas, Antonio
A1 Canton, Patrizia
A1 Jaque, Daniel
A1 Vetrone, Fiorenzo
AB We propose two effective approaches to enhance the Förster resonance energy transfer (FRET) efficiency from near-infrared excited upconverting nanoparticles (UCNPs, namely, LiYF4:Yb3+,Tm3+) to CuInS2 quantum dots (QDs) upon engineering of the donor’s architecture. The study of the particles’ interaction highlighted a radiative nature of the energy transfer among the moieties under investigation when in solution. However, analyses performed on dry powders allowed observing clear evidence of a FRET mechanism. In particular, photoluminescence lifetime measurements showed that FRET efficiency could be effectively increased by both reducing the size of the UCNPs and directly controlling the distribution of the active ions throughout the donor’s volume, i.e., doping them only in the outer shell of a core/shell system. Both strategies resulted at least in a more than doubled FRET efficiency compared to larger core-only UCNPs. Obtained experimental values were compatible with those predicted from geometrical considerations on the active ions’ distribution over the UCNP volume. These results provide a concrete proof of the potential of a UCNP–QD FRET pair when the system is properly designed, hence setting a solid base for the development of robust and efficient all-inorganic probes for FRET-based assays.
PB American Chemical Society
YR 2018
FD 2018-03-30
LK https://hdl.handle.net/20.500.14352/116497
UL https://hdl.handle.net/20.500.14352/116497
LA eng
NO Marin, Riccardo, et al. «Upconverting Nanoparticle to Quantum Dot Förster Resonance Energy Transfer: Increasing the Efficiency through Donor Design». ACS Photonics, vol. 5, n.o 6, junio de 2018, pp. 2261-70. DOI.org (Crossref), https://doi.org/10.1021/acsphotonics.8b00112.
NO Ministerio de Educación y Ciencia
NO Ministerio de Economia y Competitividad
NO Unión Europea
DS Docta Complutense
RD 29 abr 2025