Metal complex formation on the surface of amorphous aluminium hydroxide. Part III. Copper(II) complexes of O-phospho-L-serine and O-phospho-L-tyrosine

Electron spin resonance (ESR) and electronic spectra of gels of amorphous aluminium hydroxide after adsorption of copper(II), in the presence of O-phospho-L-serine or O-phospho-L-tyrosine, from aqeous solutions over the pH range 4-8, indicated the formation of complexes having 1:1 or 1:2 metal-to-ligand ratios. In these gels, the ligands bind to the surface through the phosphate groups and chelate the metal via the amino and carboxylate groups. The adsorption behaviour of copper(II) and ligands was compared to that observed previously for the analogous copper(II)-glutamic, aspartic or pyridinedicarboxylic acids-aluminium hydroxide systems. © 1988.