Polyacrylonitrile (PAN, average Mw 150 000), dimethylformamide (DMF, >99.9%), Tween® 80, zirconium tetrachloride (ZrCl4, >99.5%), cobalt nitrate hexahydrate (Co(NO3)2·6H2O, 98%), neodymium nitrate hexahydrate (N3NdO9·6H2O, 99.9%), dysprosium nitrate hydrate (DyN3O9·xH2O, 99.9%)...