Fluorescent or not? Size-dependent fluorescence switching for polymer-stabilized gold clusters in the 1.1-1.7 nm size range

Chem Commun (Camb). 2008 Sep 14:(34):3986-8. doi: 10.1039/b809876j. Epub 2008 Aug 1.

Abstract

The synthesis of fluorescent water-soluble gold nanoparticles by the reduction of a gold salt in the presence of a designed polymer ligand is described, the size and fluorescence of the particles being controlled by the polymer to gold ratio; the most fluorescent nanomaterial has a 3% quantum yield, a 1.1 nm gold core and a 6.9 nm hydrodynamic radius.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Diagnostic Imaging / methods*
  • Fluorescence
  • Fluorescent Dyes / chemistry*
  • Gold / chemistry*
  • Ligands
  • Nanoparticles / chemistry*
  • Nanotechnology / methods*
  • Particle Size
  • Polymethacrylic Acids / chemistry*
  • Solubility
  • Spectrometry, Fluorescence
  • Spectrophotometry, Atomic
  • Water / chemistry

Substances

  • Fluorescent Dyes
  • Ligands
  • Polymethacrylic Acids
  • Water
  • Gold