Open AccessPreorganized and immobilized ligands for metal ion separations. Final report, June, 1994--May, 1997
Author(s) -
Robert T. Paine
Publication year - 1997
Language(s) - English
Resource type - Reports
DOI - 10.2172/555339
Subject(s) - lanthanide , chemistry , combinatorial chemistry , bifunctional , chelation , coordination complex , actinide , metal ions in aqueous solution , extraction (chemistry) , ion , metal , nanotechnology , organic chemistry , materials science , inorganic chemistry , catalysis
Historically, much of the interest shown in f-element ion coordination chemistry has been driven by practical needs to devise separation schemes for lanthanide (Ln) and actinide (An) ions. However, few of the separations are completely satisfactory, and the basic chemical framework needed to achieve improvements is still poorly developed. As a result, studies of the fundamental aspects of f-element coordination chemistry are still pertinent not only to the evolution of improved separations, but also waste remediation, biological and medical applications of Ln ions, biochemistry of An ion decorporation, and new solid state materials preparations. The research objectives during the present grant period were to (1) synthesize new bifunctional and trifunctional chelating ligands, particularly in the class of new phosphonopyridine N-oxides; (2) characterize the structural features of the Ln and An coordination complexes formed by these ligands; (3) determine the extraction efficacy of these ligands; and (4) explore synthetic approaches for formation of dendritic polymers containing phosphoryl terminating groups. Some highlights of recently accomplished work and still-in-progress research are outlined