Fluorescent gold nanoparticles: Synthesis of composite materials of two-component disulfide gels and gold nanoparticles

Koji Yamamoto, Zengjian An, Nozomi Saito, Masahiko Yamaguchi

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

Pseudoenantiomeric ethynylhelicene oligomers containing a disulfide group formed two-component gels, which showed different solvent properties from gels without the disulfide group. The disulfide gels reacted with gold nanoparticles, and the resulting organic-inorganic composite materials exhibited fluorescence emission between 600-800 nm, along with emission from the oligomers at 450 nm. The disulfide gels and isolated gold nanoparticles loaded with the oligomers did not show the former emission. The 600-800 nm emission reversibly disappeared upon sol formation with heating, which was accompanied by an enhancement of the emission at 450 nm. The novel emission was also observed in the solid state.

Original languageEnglish
Pages (from-to)10580-10588
Number of pages9
JournalChemistry - A European Journal
Volume19
Issue number32
DOIs
Publication statusPublished - 2013 Aug 5

Keywords

  • composite materials
  • disulfide bonds
  • fluorescent gold nanoparticles
  • gels
  • helicenes

ASJC Scopus subject areas

  • Catalysis
  • Organic Chemistry

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