National Technical Reports Library

The National Technical Information Service acquires, indexes, abstracts, and archives the largest collection of U.S. government-sponsored technical reports in existence. The NTRL offers online, free and open access to these authenticated government technical reports. Technical reports and documents in its repository may be available online for free either from the issuing federal agency, the U.S. Government Publishing Office’s Federal Digital System website, or through search engines.

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Role of Bifunctionality in the Design of Ion-Selective Complexants.

DE2005833775

Publication Date	2003
Personal Author	Aleandratos, S. D.
Page Count	76
Abstract	The importance of multi-functionality in the preparation of ion-selective polymers is evident from the structure of enzymes where specific metal ions are bound through cooperative interactions among different amino acids. In synthetic polymers, ionic selectivity is enhanced when a chemical reaction is superimposed on an ion-exchange process. The concept of reactive ion exchange has been extended through the synthesis of crosslinked polymers whose metal ion selectivity is a function of reduction, coordination or precipitation reactions as determined by various covalently bound ligands. Development of three classes of dual mechanism bifunctional polymers, a new series of bifunctional diphosphonate polymers, and novel bifunctional ion-selective polymers with enhanced ionic accessibility has been accomplished.
Keywords	Polymers Ion exchange Amino acids Chemical reactions Design Enzymes Ligands Ions Precipitation Synthesis(Chemistry)
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Tennessee Univ., Knoxville. Dept. of Chemistry.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200526

Role of Bifunctionality in the Design of Ion-Selective Complexants.

Role of Bifunctionality in the Design of Ion-Selective Complexants.
DE2005833775

Publication Date	2003
Personal Author	Aleandratos, S. D.
Page Count	76
Abstract	The importance of multi-functionality in the preparation of ion-selective polymers is evident from the structure of enzymes where specific metal ions are bound through cooperative interactions among different amino acids. In synthetic polymers, ionic selectivity is enhanced when a chemical reaction is superimposed on an ion-exchange process. The concept of reactive ion exchange has been extended through the synthesis of crosslinked polymers whose metal ion selectivity is a function of reduction, coordination or precipitation reactions as determined by various covalently bound ligands. Development of three classes of dual mechanism bifunctional polymers, a new series of bifunctional diphosphonate polymers, and novel bifunctional ion-selective polymers with enhanced ionic accessibility has been accomplished.
Keywords	Polymers Ion exchange Amino acids Chemical reactions Design Enzymes Ligands Ions Precipitation Synthesis(Chemistry)
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Tennessee Univ., Knoxville. Dept. of Chemistry.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200526