A. Favrereguillon et al., SYNTHESIS AND EVALUATION OF NEW POLYURETHANE-BASED MATERIAL FOR ION SEPARATION, Tetrahedron letters, 36(36), 1995, pp. 6439-6442
The polyaddition of macrocyclic diols with diisocyanates is an easy wa
y to prepare ionselective polymers bearing pendant crown ethers. Those
polymers can be readily immobilized on silicagel, with no change of i
onoselective properties.