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Bright fluorescence from individual single-walled carbon nanotubes.
Lee, Andrea J; Wang, Xiaoyong; Carlson, Lisa J; Smyder, Julie A; Loesch, Bradford; Tu, Xiaomin; Zheng, Ming; Krauss, Todd D.
Afiliación
  • Lee AJ; Department of Chemistry, University of Rochester, Rochester, New York 14627, United States.
Nano Lett ; 11(4): 1636-40, 2011 Apr 13.
Article en En | MEDLINE | ID: mdl-21417364
Single-walled carbon nanotubes (SWNTs) have unique photophysical properties but low fluorescence efficiency. We have found significant increases in the fluorescence efficiency of individual DNA-wrapped SWNTs upon addition of reducing agents, including dithiothreitol, Trolox, and ß-mercaptoethanol. Brightening was reversible upon removal of the reducing molecules, suggesting that a transient reduction of defect sites on the SWNT sidewall causes the effect. These results imply that SWNTs are intrinsically bright emitters and that their poor emission arises from defective nanotubes.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Iluminación / Nanotubos de Carbono / Mediciones Luminiscentes Idioma: En Revista: Nano Lett Año: 2011 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: Iluminación / Nanotubos de Carbono / Mediciones Luminiscentes Idioma: En Revista: Nano Lett Año: 2011 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Estados Unidos