Multifunctional ruthenium(II) polypyridine complex-based core-shell magnetic silica nanocomposites: magnetism, luminescence, and electrochemiluminescence

ACS Nano. 2008 May;2(5):905-12. doi: 10.1021/nn800123w.

Abstract

Multifunctional nanoparticles (NPs) that consist of silica-coated magnetic cores and luminescent ruthenium(II) polypyridine complexes have been prepared. These multifunctional nanocomposites were shown to exhibit superparamagnetic behavior, high emission intensity, and electrochemiluminescence. An intense low-oxidation-potential electrochemiluminescence signal was observed by attachment of these functional NPs onto a fluorosurfactant-modified gold (Au(m)) electrode via application of an external magnetic field.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Crystallization / methods
  • Electrochemistry / methods*
  • Luminescent Measurements / methods*
  • Macromolecular Substances / chemistry
  • Magnetics / methods*
  • Materials Testing
  • Molecular Conformation
  • Nanostructures / chemistry*
  • Nanostructures / ultrastructure*
  • Nanotechnology / methods
  • Particle Size
  • Pyridines / chemistry*
  • Ruthenium / chemistry*
  • Silicon Dioxide / chemistry*
  • Surface Properties

Substances

  • Macromolecular Substances
  • Pyridines
  • Silicon Dioxide
  • Ruthenium
  • pyridine