Artículo
Multiphoton Excitation of Upconverting Nanoparticles in Pulsed Regime
Fecha de publicación:
01/2016
Editorial:
American Chemical Society
Revista:
Analytical Chemistry
ISSN:
0003-2700
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
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.
Palabras clave:
Erbium
,
Microscopy
,
Sectioning
,
Two-Photon
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(INQUIMAE)
Articulos de INST.D/QUIM FIS D/L MATERIALES MEDIOAMB Y ENERGIA
Articulos de INST.D/QUIM FIS D/L MATERIALES MEDIOAMB Y ENERGIA
Citación
Hodak, Jose Hector; Chen, Zhijun; Wu, Si; Etchenique, Roberto Argentino; Multiphoton Excitation of Upconverting Nanoparticles in Pulsed Regime; American Chemical Society; Analytical Chemistry; 88; 2; 1-2016; 1468-1475
Compartir
Altmétricas