An acridinium-based sensor as a fluorescent photoinduced electron transfer probe for proton detection modulated by anionic micelles

Org Biomol Chem. 2014 Sep 14;12(34):6677-83. doi: 10.1039/c4ob00559g.

Abstract

A water-soluble fluorescent pH sensor of 9-amino-10-methylacridinium chromophore with the 2-(diethylamine)ethyl chain as a receptor shows an "off-on" response going from basic to acidic solution. Photoinduced electron transfer has been directly demonstrated to be the quenching mechanism by the observation of the long-lived acridinyl radical. The interaction of the protonated sensor with anionic micelles causes a significant increase in the detection sensitivity of pH.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Aminacrine / analogs & derivatives*
  • Aminacrine / chemistry
  • Anions
  • Electron Transport
  • Electrons*
  • Fluorescent Dyes / analysis
  • Fluorescent Dyes / chemical synthesis*
  • Free Radicals / chemistry
  • Hydrogen-Ion Concentration
  • Micelles*
  • Molecular Structure
  • Protons*
  • Solutions
  • Water / chemistry*

Substances

  • Anions
  • Fluorescent Dyes
  • Free Radicals
  • Micelles
  • Protons
  • Solutions
  • Water
  • Aminacrine
  • 9-amino-10-methylacridinium