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FRET distance dependence from upconverting nanoparticles to quantum dots

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Melle Hernández, Sonia and Gómez Calderón, Óscar and Laurenti, Marco and Méndez González, Diego and Egatz-Gómez, Ana and López Cabarcos, Enrique and Cabrera Granado, Eduardo and Díaz García, Elena and Rubio Retama, Jorge (2018) FRET distance dependence from upconverting nanoparticles to quantum dots. Journal of physical chemistry C . 26 p.. ISSN 1932-7447 (Submitted)

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Abstract

Förster resonant energy transfer (FRET) with upconverting nanoparticles (UCNPs) as donors and quantum dots (QDs) as acceptors has been regarded as a promising tool for biosensing applications. In this work, we use time-resolved fluorescence spectroscopy to analyze the UCNP-to-QD FRET and we focus on the most relevant parameter of the FRET phenomenon, UCNP-QD distance. This distance is controlled by a nanometric silica shell around the UCNP surface. We theoretically reproduce the experimental results applying FRET theory to the distribution of emitting erbium ions in the UCNP. This simple model allows us to estimate the contribution of every erbium ion to the final FRET response and to explore different strategies to improve FRET efficiency.


Item Type:Article
Additional Information:

Submitted on 25 May 2018

Uncontrolled Keywords:Förster resonance energy transfer, Upconversion, Quantum dot
Subjects:Sciences > Physics > Optics
Sciences > Physics > Particles
Sciences > Physics > Quantum theory
ID Code:48581
Deposited On:19 Jul 2018 08:10
Last Modified:20 Jul 2018 07:15

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