Molecular Design of Chromogenic Calix[4]crowns Which Show Very High Na+ Selectivity
- 1 July 1995
- journal article
- Published by Oxford University Press (OUP) in Chemistry Letters
- Vol. 24 (7), 497-498
- https://doi.org/10.1246/cl.1995.497
Abstract
Chromogenic calix[4]crowns bearing a short crown strap for the metal recognition and an azophenol unit for the optical reading-out were designed and synthesized. Two-phase solvent-extraction established that they show remarkably high Na+/K+(>103.1) selectivity. This discrimination ability is high enough to apply them as a Na+-selective ionophore for optical sensing systems.This publication has 5 references indexed in Scilit:
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