Fluorescent sensors for Ca(2+) and Pb(2+) based on binaphthyl derivatives

Spectrochim Acta A Mol Biomol Spectrosc. 2009 Mar;72(2):322-6. doi: 10.1016/j.saa.2008.09.013. Epub 2008 Oct 14.

Abstract

Two novel binaphthyl compounds have been synthesized for the selective fluorescent recognition of Ca(2+) or Pb(2+). By introducing different terminal groups to the receptor unit, the fluorescence signals of the receptors are significantly changed: 1 is fluorescence enhancement for Ca(2+), 2 is fluorescence quenching for Pb(2+). The binding properties for metal ions were examined by the absorption and fluorescence spectra. The fluorescence intensity enhancement was ascribed to the complex formation between Ca(2+) and 1 which blocked the photo-induced electron transfer process.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Calcium / analysis*
  • Fluorescent Dyes / chemical synthesis
  • Fluorescent Dyes / chemistry*
  • Lead / analysis*
  • Naphthalenes / chemical synthesis
  • Naphthalenes / chemistry*
  • Optics and Photonics
  • Photochemistry

Substances

  • Fluorescent Dyes
  • Naphthalenes
  • Lead
  • Calcium