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Assessing Single Upconverting Nanoparticle Luminescence by Optical Tweezers

Autor (es)
Rodríguez-Sevilla, Paloma; Rodríguez-Rodríguez, H.; Pedroni, Marco; Speghini, A.; Bettinelli, M.; Solé, J.G.; Jaque García, DanielAutoridad UAM; Haro-González, Patricia
Entidad
UAM. Departamento de Física de Materiales
Editor
American Chemical Society
Fecha de edición
2015-08-12
Cita
Nano Letters 15.8 (2015): 5068-5074
ISSN
1530-6984 (print); 1530-6992 (online)
DOI
10.1021/acs.nanolett.5b01184
Financiado por
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”
Proyecto
Gobierno de España. MAT2010–16161; Gobierno de España. MAT2013–47395-C4–1-R
Versión del editor
http://dx.doi.org/10.1021/acs.nanolett.5b01184
Materias
Upconverting nanoparticle; Optical tweezers; Single particle fluorescence; Física
URI
http://hdl.handle.net/10486/674299
Derechos
© 2015 American Chemical Society

Resumen

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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Google™ Scholar:Rodríguez-Sevilla, Paloma - Rodríguez-Rodríguez, H. - Pedroni, Marco - Speghini, A. - Bettinelli, M. - Solé, J.G. - Jaque García, Daniel - Haro-González, Patricia

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