Immobilization of gold nanoparticles on optical waveguides with organosilane monolayer

Takuya Nakanishi, Harumi Takada, Hironori Iida, Mayuki Kajiura, Tetsuya Osaka*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


Synthesis of Au nanoparticles (NPs) and their immobilization on optical waveguide (OWG) made of quartz plate were carried out aiming at application to sensing. Au NPs with diameters of ∼5 nm and ∼20 nm were synthesized by reduction of tetrachloroaurate ions with borohydride and immobilized on quartz OWG coated with monolayer of organosilane. With the OWG spectroscopy, the surface plasmon absorption of the Au NPs immobilized on OWG was suggested to be influenced by the particle size and the interparticle distance and to response to the refractive index of nanoparticle proximity sensitively.

Original languageEnglish
Pages (from-to)234-238
Number of pages5
JournalColloids and Surfaces A: Physicochemical and Engineering Aspects
Publication statusPublished - 2008 Feb 1


  • Gold nanoparticle
  • Immobilization
  • Optical waveguide spectroscopy
  • Surface plasmon resonance

ASJC Scopus subject areas

  • Surfaces and Interfaces
  • Physical and Theoretical Chemistry
  • Colloid and Surface Chemistry


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