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Electric Field Modulation of Semiconductor Quantum Dot Photoluminescence: Insights Into the Design of Robust Voltage-Sensitive Cellular Imaging Probes.
Rowland, Clare E; Susumu, Kimihiro; Stewart, Michael H; Oh, Eunkeu; Mäkinen, Antti J; O'Shaughnessy, Thomas J; Kushto, Gary; Wolak, Mason A; Erickson, Jeffrey S; Efros, Alexander L; Huston, Alan L; Delehanty, James B.
Afiliación
  • Rowland CE; Center for Bio/Molecular Science and Engineering, Naval Research Laboratory , Code 6900, 4555 Overlook Avenue SW, Washington, DC 20375, United States.
  • Susumu K; Optical Sciences Division, Naval Research Laboratory , Code 5600, 4555 Overlook Avenue SW, Washington, DC 20375, United States.
  • Stewart MH; Optical Sciences Division, Naval Research Laboratory , Code 5600, 4555 Overlook Avenue SW, Washington, DC 20375, United States.
  • Oh E; Optical Sciences Division, Naval Research Laboratory , Code 5600, 4555 Overlook Avenue SW, Washington, DC 20375, United States.
  • Mäkinen AJ; Optical Sciences Division, Naval Research Laboratory , Code 5600, 4555 Overlook Avenue SW, Washington, DC 20375, United States.
  • O'Shaughnessy TJ; Materials Science and Technology Division, Naval Research Laboratory , Code 6300, 4555 Overlook Avenue SW, Washington, DC 20375, United States.
  • Kushto G; Optical Sciences Division, Naval Research Laboratory , Code 5600, 4555 Overlook Avenue SW, Washington, DC 20375, United States.
  • Wolak MA; Optical Sciences Division, Naval Research Laboratory , Code 5600, 4555 Overlook Avenue SW, Washington, DC 20375, United States.
  • Erickson JS; Center for Bio/Molecular Science and Engineering, Naval Research Laboratory , Code 6900, 4555 Overlook Avenue SW, Washington, DC 20375, United States.
  • Efros AL; Materials Science and Technology Division, Naval Research Laboratory , Code 6300, 4555 Overlook Avenue SW, Washington, DC 20375, United States.
  • Huston AL; Optical Sciences Division, Naval Research Laboratory , Code 5600, 4555 Overlook Avenue SW, Washington, DC 20375, United States.
  • Delehanty JB; Center for Bio/Molecular Science and Engineering, Naval Research Laboratory , Code 6900, 4555 Overlook Avenue SW, Washington, DC 20375, United States.
Nano Lett ; 15(10): 6848-54, 2015 Oct 14.
Article en En | MEDLINE | ID: mdl-26414396
The intrinsic properties of quantum dots (QDs) and the growing ability to interface them controllably with living cells has far-reaching potential applications in probing cellular processes such as membrane action potential. We demonstrate that an electric field typical of those found in neuronal membranes results in suppression of the QD photoluminescence (PL) and, for the first time, that QD PL is able to track the action potential profile of a firing neuron with millisecond time resolution. This effect is shown to be connected with electric-field-driven QD ionization and consequent QD PL quenching, in contradiction with conventional wisdom that suppression of the QD PL is attributable to the quantum confined Stark effect.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Semiconductores / Sondas Moleculares / Puntos Cuánticos Tipo de estudio: Diagnostic_studies Idioma: En Revista: Nano Lett Año: 2015 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Estados Unidos
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Semiconductores / Sondas Moleculares / Puntos Cuánticos Tipo de estudio: Diagnostic_studies Idioma: En Revista: Nano Lett Año: 2015 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Estados Unidos