Selective anion sensing by chiral macrocyclic receptors with multiple hydrogen-bonding sites

Org Lett. 2014 Mar 7;16(5):1302-5. doi: 10.1021/ol403643d. Epub 2014 Feb 14.

Abstract

Chiral macrocycles featuring sulfonamide and/or amide groups as anion-binding sites were synthesized. X-ray crystal structures and DFT calculations have shown that they adopt different conformations that may lead to unique binding behavior. Indeed, various anions could be sensed by their colorimetric and/or fluorescence signal output. The chiral macrocycles showed chiral recognition for chiral anions. Furthermore, a multisensor array with two or four chiral receptors discriminated seven phosphate anions (AMP, ADP, ATP, CMP, GMP, Pi, and PPi) with 100% classification accuracy.

Publication types

  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Amides / chemistry
  • Anions / chemistry
  • Crystallography, X-Ray
  • Hydrogen Bonding
  • Macrocyclic Compounds / chemistry*
  • Magnetic Resonance Spectroscopy
  • Molecular Conformation
  • Molecular Structure
  • Phosphates / chemistry

Substances

  • Amides
  • Anions
  • Macrocyclic Compounds
  • Phosphates