1. Fluorescence properties of aromatic amine adsorbed on metallic and semiconducting single-walled carbon nanotubes
- Author
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Kubota, Satoshi, Maruyama, Takafumi, Nishikiori, Hiromasa, Ito, Fuyuki, Tanaka, Nobuaki, Endo, Morinobu, and Fujii, Tsuneo
- Subjects
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FLUORESCENCE , *AROMATIC amines , *SEMICONDUCTORS , *CARBON nanotubes , *PYRENE , *ADSORPTION (Chemistry) , *AMINO group , *GRAPHENE , *HYDROGEN bonding - Abstract
Abstract: Semiconducting single-walled carbon nanotubes (SWNTs) have been enriched by 1-aminopyrene treatment of the mildly oxidized SWNTs due to removal of metallic SWNTs having a higher affinity for 1-aminopyrene. The enrichment was caused by the differences in the adsorption properties of 1-aminopyrene on the metallic and semiconducting SWNTs. The fluorescence properties of 1-aminopyrene adsorbed on the metallic and semiconducting SWNTs have been investigated in order to clarify its adsorption mechanism. 1-Aminopyrene was adsorbed on the metallic SWNTs through the interaction of the amino group with the graphene surface and through a hydrogen bonding interaction between the amino group and the carboxyl group on the graphene surface. On the other hand, in the case of semiconducting SWNTs, 1-aminopyrene was adsorbed through a π–π interaction on the graphene surface in addition to the hydrogen bonding interaction with the carboxyl groups. [Copyright &y& Elsevier]
- Published
- 2011
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