Sayin, SerkanDogan, Vildan2020-03-262020-03-2620151300-0527https://dx.doi.org/10.3906/kim-1405-69https://hdl.handle.net/20.500.12395/32594A new calix[4]arene derivative, 3, which functionalized at the lower rim with 2-(2-aminoethyl amino)-5-nitropyridine, was synthesized and characterized by a combination of FTIR, H-1 NMR, C-13 NMR, and elemental analysis. Then the calix[4]arene 3 was grafted onto [3-(2,3-epoxypropoxy)propylltrimethoxysilane-modified Fe3O4- nanoparticles (EPPTMS-MN) to produce new calixarene-adorned magnetic nanoparticles (MN-DiNoPy-Calix (4)). The structure of the calixarene-adorned magnetic nanoparticles 4 was determined by a combination of FTIR, TEM, and elemental analysis. Moreover, a study regarding the removal of toxic HCr2O7- anion from aqueous solution was also carried out with the calixarene-adorned magnetic nanoparticles in solid liquid extraction studies.en10.3906/kim-1405-69info:eu-repo/semantics/openAccessCalixareneproton-switchablemagnetic nanoparticlesdichromate anionsolid-liquid extractionArticle391130138Q3WOS:000349741100012Q3