Assessing Single Upconverting Nanoparticle Luminescence by Optical Tweezers

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Assessing Single Upconverting Nanoparticle Luminescence by Optical Tweezers

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Title: Assessing Single Upconverting Nanoparticle Luminescence by Optical Tweezers
Author: Rodríguez-Sevilla, Paloma; Rodríguez-Rodríguez, H.; Pedroni, Marco; Speghini, A.; Bettinelli, M.; Solé, J.G.; Jaque, D.; Haro-González, Patricia
Entity: UAM. Departamento de Física de Materiales
UAM Author: Haro González, Patricia
Publisher: American Chemical Society
Date: 2015-08-12
Citation: Nano Letters 15.8 (2015): 5068-5074
ISSN: 1530-6984 (print); 1530-6992 (online)
DOI: 10.1021/acs.nanolett.5b01184
Funded by: This work was supported by the Spanish Ministerio de Educación y Ciencia (MAT2010–16161 and MAT2013–47395-C4–1-R). P.H.G. thanks the Spanish Ministerio de Economía y Competitividad (MINECO) for the Juan de la Cierva program. P.R.S thanks the Spanish Ministerio de Economía y Competitividad (MINECO) for the “Promoción 14 del talento y su Empleabilidad en I+D+i” statal program. Fondazione Cariverona (Verona, Italy) is gratefully acknowledged for financial support in the frame of the project “Verona Nanomedicine Initiative”
Project: Gobierno de España. MAT2010–16161; Gobierno de España. MAT2013–47395-C4–1-R
Editor's Version: http://dx.doi.org/10.1021/acs.nanolett.5b01184
Subjects: Upconverting nanoparticle; Optical tweezers; Single particle fluorescence; Física
URI: http://hdl.handle.net/10486/674299
Rights: © 2015 American Chemical Society

Abstract:

We report on stable, long-term immobilization and localization of a single colloidal Er3+/Yb3+ codoped upconverting fluorescent nanoparticle (UCNP) by optical trapping with a single infrared laser beam. Contrary to expectations, the single UCNP emission differs from that generated by an assembly of UCNPs. The experimental data reveal that the differences can be explained in terms of modulations caused by radiation-trapping, a phenomenon not considered before but that this work reveals to be of great relevance

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G o o g l e ™ Scholar: Rodríguez-Sevilla, Paloma - Rodríguez-Rodríguez, H. - Pedroni, Marco - Speghini, A. - Bettinelli, M. - Solé, J.G. - Jaque, D. - Haro-González, Patricia

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