A series of calix\ 1,4 crown based polymers with stable conformations were synthesized by reacting calix\ 1,4 crown tetraester with poly(ethyleneimine), and their adsorption capabilities were studied . Their structures and shapes were characterized by elemental analyses, IR and SEM techniques. Their adsorption selectivities were found to be higher than that of calix\arene polymer without stable conformation. All of them showed good selective adsorption capability towards Cu 2+ among the tested cations. The adsorption capacity of compound 2a towards Cu 2+ at concentration of 0 2 mmol/L were 64 5×10 -5 mol/mg.
Under the action of CS2 and KOH in dioxane solution, calixarene derivative 2 was converted into calixarene derivative containing xanthate salt (3) and its Ni2+ complex compound 4 was prepared by self-assembled reaction with NiSO4 further. The structures of new compounds were confirmed by elemental analyses, IR, UV, 1H NMR, MS techniques. The Ni2+ of complex compound 4 was in high-spin state by its ESR spectrum.
A new type of resin containing calixarene carboxylate and chitosan was synthesized for the first time and adsorption behavior of them for K+,Na+,Hg2+,Ag+,Ni2+,Cd2+and Pb2+was investigated.It was found calixarene-chitosan show high adsorption capablilities and some adsorption selectivity comparing with chitosan and other calixarene polymers.
