title: Chitosan and Its Derivatives as Highly Efficient Polymer Ligands.
abstract: The polyfunctional nature of chitosan enables its application as a polymer ligand not only for the recovery, separation, and concentration of metal ions, but for the fabrication of a wide spectrum of functional materials. Although unmodified chitosan itself is the unique cationic polysaccharide with very good complexing properties toward numerous metal ions, its sorption capacity and selectivity can be sufficiently increased and turned via chemical modification to meet requirements of the specific applications. In this review, which covers results of the last decade, we demonstrate how different strategies of chitosan chemical modification effect metal ions binding by O-, N-, S-, and P-containing chitosan derivatives, and which mechanisms are involved in binding of metal cation and anions by chitosan derivatives.
authors.affiliation: I.Ya. Postovsky Institute of Organic Synthesis, Ural Branch of Russian Academy of Sciences, Yekaterinburg 620990, Russia. pestov@ios.uran.ru.|Institute of Chemistry, Far East Branch of Russian Academy of Sciences, Vladivostok 690022, Russia. pestov@ios.uran.ru.
authors.forename: Alexander
authors.initials: A
authors.lastname: Pestov
authors.affiliation: Institute of Chemistry, Far East Branch of Russian Academy of Sciences, Vladivostok 690022, Russia. sbratska@ich.dvo.ru.
authors.forename: Svetlana
authors.initials: S
authors.lastname: Bratskaya
mesh_terms: D000327:Adsorption; D048271:Chitosan / Q000737:chemistry*; D003432:Cross-Linking Reagents; D008024:Ligands; D008670:Metals / Q000737:chemistry; D015394:Molecular Structure; D011108:Polymers / Q000737:chemistry
chemical_list: D003432:Cross-Linking Reagents; D008024:Ligands; D008670:Metals; D011108:Polymers; D048271:Chitosan
keywords: chemical modification; chitosan; chitosan derivatives; complexation; ion binding mechanism; metal ions; selectivity; sorption