Optical field and chemical environment near the surface modified gold nanoparticle assembly revealed by two-photon induced photoluminescence and surface enhanced raman scattering

Atsuko Jimbo, Yui Nishikado, Kohei Imura*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Gold nanoparticle assemblies significantly enhance optical fields and have been applied for nano-optical devices, biosensing, and chemical reactions. The optical properties of the assembly are, however, less controllable once the assemblies are fabricated on a solid substrate. An assembly prepared at the water-organic solvent interface overcomes this restriction and provides flexible photochemical reaction fields. Additionally, the physical and chemical properties of the assembly can be controlled by modification of the nanoparticle surface. In this study, we investigated the optical properties of the assembly using two-photon-induced photoluminescence and surface-enhanced Raman scattering, and demonstrated that the optical field enhancement and chemical environment near the gold nanoparticle assembly can be finely controlled by surface-modification of the gold nanoparticles.

Original languageEnglish
Pages (from-to)2272-2278
Number of pages7
JournalBulletin of the Chemical Society of Japan
Volume94
Issue number9
DOIs
Publication statusPublished - 2021

Keywords

  • Gold nanoparticle
  • Plasmon
  • Two-photon induced photoluminescence

ASJC Scopus subject areas

  • Chemistry(all)

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