Enhancement of Raman scattering from single-walled carbon nanotubes on densely-arranged two-dimensional gold nanoparticle assemblies. (2nd September 2017)

• Record Type: Journal Article
• Authors: Inoue, Wataru; Igari, Shuto; Uchida, Koji; Sugawa, Kosuke; Otsuki, Joe
• Is Part Of: Molecular crystals and liquid crystals. Volume 654(2017)
• Page Start: 151
• Page End: 156
• Publication Date: 2017-09-02
• Subjects: Gold nanoparticles -- hot spots -- single-stranded DNA -- single-walled carbon nanotube -- surface-enhanced Raman scattering; Molecular crystals -- Periodicals; Liquid crystals -- Periodicals; Liquid crystals; Molecular crystals; Periodicals; 548
• DOI: 10.1080/15421406.2017.1358022
• Languages: English
• ISSNs: 1542-1406

Abstract

ABSTRACT: 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.