found to be an excellent Cu(II) carrier in the transportthrough a chloroform liquidmembrane. It can selectively and efficientlytransport Cu(II) from a weakly acidic aqueous solution containing Cu(II), Zn(II), Ni(II), and Co(II). Several N,N′-di(8-quinolyl)glutaramide derivatives and their analogues have been prepared for comparison of this transport ability, which largely depends not only upon the