Highly sensitive and selective fluorescent sensor for Zn2+/Cu2+ and new approach for sensing Cu2+ by central metal displacement

Chem Commun (Camb). 2011 May 28;47(20):5798-800. doi: 10.1039/c1cc10696a. Epub 2011 Mar 29.

Abstract

An "off-on" Zn(2+) and "on-off" Cu(2+) fluorescent chemosensor C was designed and synthesized. The binding of C and Zn(2+)/Cu(2+) is chemically reversible by the addition of EDTA disodium solution; moreover, the fluorescence emission signal of ZnC decreased with the addition of Cu(2+), demonstrating that ZnC could detect Cu(2+)via metal displacement.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Copper / chemistry*
  • Edetic Acid / chemistry
  • Fluorescent Dyes / chemistry*
  • Ions / chemistry
  • Pyridines / chemical synthesis
  • Pyridines / chemistry*
  • Spectrometry, Fluorescence
  • Terphenyl Compounds / chemical synthesis
  • Terphenyl Compounds / chemistry*
  • Zinc / chemistry*

Substances

  • Fluorescent Dyes
  • Ions
  • Pyridines
  • Terphenyl Compounds
  • Copper
  • Edetic Acid
  • Zinc