Spatio-selective surface modification of glass assisted by laser-induced deposition of gold nanoparticles

Hironobu Takahashi, Yasuro Niidome, Hideyuki Hisanabe, Keita Kuroiwa, Nobuo Kimizuka, Sunao Yamada

Research output: Contribution to journalArticlepeer-review

Abstract

Using pulsed laser irradiation (532 nm), dodecanethiol-capped gold nanoparticles (DT-Au) were deposited on the laser-irradiated region of a hydrophobic glass substrate modified with dimethyloctadecylchlorosilane (DMOS). After removal of deposited DT-Au, the laser-deposited region on the substrate was hydrophilic, as verified by static water contact angles. X-ray photoelectron spectroscopy suggested that the naked glass surface was not exposed at the hydrophilic region. Immersion of the substrate into gold nanorod (NR) solution selectively immobilized NRs on the hydrophilic surface via electrostatic interactions, indicating that the hydrophilic region was an anionic surface. From these results, it is expected that some immobilized DMOS groups on the laser-irradiated region of the substrate were oxidized during DT-Au deposition and fragmentation of the deposited DT-Au.

Original languageEnglish
Pages (from-to)1618-1622
Number of pages5
JournalThin Solid Films
Volume515
Issue number4
DOIs
Publication statusPublished - Dec 5 2006

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

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