13-Membered crown ethers with azo or azoxy unit in the macrocycle - synthesis, membrane electrodes, voltammetry and Langmuir monolayers

Abstract
A facile way to obtain substituted azo- and azoxycrown ethers has been developed. Applicability of these crown ethers in sodium-sensitive membrane electrodes has been studied. Voltammetric behavior of the crown ethers bearing azo- and azoxy- subunits in the macrocyclic system has been characterized. Formation of Langmuir-Blodgett monolayers of amphiphilic azocrown ethers on aqueous subphase has been investigated.