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Abstract:

Upconverting nanoparticles (UCNPs) present emission in the visible region upon irradiation with NIR light through a multiphoton mechanism. However, the long characteristic time of their emission has prevented the use of this kind of entities as multiphoton probes. We present a study on the use of erbium-containing UCNPs under pulsed excitation, showing that both the power density and the duration of the excitation pulse are key factors to understand the emission behavior. By adjusting power and excitation rate, we can obtain typical multiphoton z-axis focal exclusive excitation. These findings open the possibility of using UCNPs as probes for controlled localization of uncaging and imaging with multiphoton z-axis sectioning. We show that this can be achieved even at power densities several orders of magnitude lower than traditional multiphoton microscopies. © 2015 American Chemical Society.

Registro:

Documento: Artículo
Título:Multiphoton Excitation of Upconverting Nanoparticles in Pulsed Regime
Autor:Hodak, J.; Chen, Z.; Wu, S.; Etchenique, R.
Filiación:Departamento de Química Inorgánica, Analítica y Química Física, INQUIMAE, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria Pabellón 2, Buenos Aires, AR1428EHA, Argentina
Max Planck Institute for Polymer Research, Ackermannweg 10, Mainz, 55128, Germany
Palabras clave:Probes; Characteristic time; Emission behavior; Excitation pulse; Multi-photon microscopy; Multiphoton excitation; Orders of magnitude; Under pulsed excitations; Upconverting nanoparticles; Nanoparticles
Año:2016
Volumen:88
Número:2
Página de inicio:1468
Página de fin:1475
DOI: http://dx.doi.org/10.1021/acs.analchem.5b04485
Título revista:Analytical Chemistry
Título revista abreviado:Anal. Chem.
ISSN:00032700
CODEN:ANCHA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00032700_v88_n2_p1468_Hodak

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Citas:

---------- APA ----------
Hodak, J., Chen, Z., Wu, S. & Etchenique, R. (2016) . Multiphoton Excitation of Upconverting Nanoparticles in Pulsed Regime. Analytical Chemistry, 88(2), 1468-1475.
http://dx.doi.org/10.1021/acs.analchem.5b04485
---------- CHICAGO ----------
Hodak, J., Chen, Z., Wu, S., Etchenique, R. "Multiphoton Excitation of Upconverting Nanoparticles in Pulsed Regime" . Analytical Chemistry 88, no. 2 (2016) : 1468-1475.
http://dx.doi.org/10.1021/acs.analchem.5b04485
---------- MLA ----------
Hodak, J., Chen, Z., Wu, S., Etchenique, R. "Multiphoton Excitation of Upconverting Nanoparticles in Pulsed Regime" . Analytical Chemistry, vol. 88, no. 2, 2016, pp. 1468-1475.
http://dx.doi.org/10.1021/acs.analchem.5b04485
---------- VANCOUVER ----------
Hodak, J., Chen, Z., Wu, S., Etchenique, R. Multiphoton Excitation of Upconverting Nanoparticles in Pulsed Regime. Anal. Chem. 2016;88(2):1468-1475.
http://dx.doi.org/10.1021/acs.analchem.5b04485