Enhancement of Raman scattering from single-walled carbon nanotubes on densely-arranged two-dimensional gold nanoparticle assemblies
| Autor: | Koji Uchida, Joe Otsuki, Kosuke Sugawa, Shuto Igari, Wataru Inoue |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Nanoparticle 02 engineering and technology General Chemistry Carbon nanotube 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences law.invention Optical properties of carbon nanotubes Coupling (electronics) symbols.namesake chemistry.chemical_compound chemistry Chemical engineering Colloidal gold law symbols General Materials Science 0210 nano-technology Raman spectroscopy Raman scattering Carbon monoxide |
| Zdroj: | Molecular Crystals and Liquid Crystals. 654:151-156 |
| ISSN: | 1563-5287 1542-1406 |
| DOI: | 10.1080/15421406.2017.1358022 |
| Popis: | We investigated surface-enhanced Raman scattering properties of single-stranded DNA-functionalized single-walled carbon nanotubes (ssDNA-SWCNTs) modified on densely-arranged two-dimensional Au nanoparticle assemblies. The ssDNA-SWCNTs was prepared by sonicating a mixture solution of the ssDNA and high-pressure carbon monoxide (Hipco) SWNTs. The Au nanoparticle assemblies were prepared by an organic solvent-mediated liquid-liquid interface assembly technique. The assemblies showed a strong longitudinal dipole coupling mode, which lead to the generation of hot spots at a near infrared region. The Raman signals characteristic of the SWCNTs were significantly enhanced (average enhancement factor: 199) by the coupling mode. |
| Databáze: | OpenAIRE |
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