Fluorescence quenching of 1,4-dihydroxy-2,3-dimethyl-9,10-anthraquinone by silver nanoparticles: size effect

J Fluoresc. 2009 Jan;19(1):3-10. doi: 10.1007/s10895-008-0372-8. Epub 2008 Jul 19.

Abstract

Size effect of silver nano particles on the photophysical properties of 1,4-dihydroxy-2,3-dimethyl-9,10-anthraquinone (DHDMAQ) have been investigated using optical absorption and fluorescence emission techniques. Silver nanoparticles of different sizes have been prepared by Creighton method using magnetic stirrer and ultrasonic field. Quenching of fluorescence of DHDMAQ has been found to increase with decrease in the size of the silver nanoparticles. Stern-Volmer quenching constants have also been calculated.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Anthraquinones / chemistry*
  • Fluorescence*
  • Metal Nanoparticles / chemistry*
  • Molecular Structure
  • Particle Size
  • Quantum Theory
  • Silver / chemistry*
  • Spectrometry, Fluorescence

Substances

  • 1,4-dihydroxy-2,3-dimethyl-9,10-anthraquinone
  • Anthraquinones
  • Silver