HIGHLY OXYGEN PERMSELECTIVE MEMBRANE PREPARED FROM COBALT-COMPLEXED POLYAZOMETHINE CONTAINING A LIGAND AND A TRISILOXANE OR TETRASILOXANE IN THE MAIN-CHAIN

Two types of polyazomethines containing repetitive pairs of a tridenta ted ligand and an oligodimethylsiloxane in the backbone were synthesiz ed and complexed with cobalt ion. The resulting polymer complex membra nes showed very good oxygen permselectivity at 1 atm pressure differen ce, which is very close to the upper boundary line in an alpha vs. P-O 2 plot of data reported in the literature. The complexes are thought t o function as oxygen carrier.