Complexation properties of 1,3-dialkoxycalix[4] arene-crown derivatives: aSANS study

Calix[4]arene-crown ethers show strong affinity and high selectivity toward alkali, alkaline earth, and transition metal ions. We synthesised 1,3-dial koxycalix[4]arene-crowns-6(CAL). This compound presents high selectivity fo r Cs cations. Small-angle neutron-scattering (SANS) experiments have been p erformed on micellar solutions of cesium dodecylsulfate in the presence of the calixarene as a function of ligand-to-surfactant mole ratio. From the a nalysis of the experimental data, the micellar structure, the partition of the calixarenes at the micellar surface and the intermicellar interactions have been determined. (C) 2000 Elsevier Science B.V. All rights reserved.