Novel macrocyclic carriers for proton-coupled liquid membrane transport. Final report

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Description

The objective of this research program is to elucidate the chemical principles which are responsible for the cation selectivity and permeability of liquid membranes containing macrocyclic carriers. Several new macrocyclic carriers were synthesized during the last three year period. In addition, new, more convenient synthetic routes were achieved for several nitrogen-containing bicyclic and tricyclic macrocycles. The cation binding properties of these macrocycles were investigated by potentiometric titration, calorimetric titration, solvent extraction and NMR techniques. In addition, hydrophobic macrocycles were incorporated into dual hollow fiber and other membrane systems to investigate their membrane performance, especially in the proton-coupled transport mode. A ... continued below

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Medium: P; Size: 22 p.

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Lamb, J.D.; Izatt, R.M.; Bradshaw, J.S. & Shirts, R.B. August 24, 1996.

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Description

The objective of this research program is to elucidate the chemical principles which are responsible for the cation selectivity and permeability of liquid membranes containing macrocyclic carriers. Several new macrocyclic carriers were synthesized during the last three year period. In addition, new, more convenient synthetic routes were achieved for several nitrogen-containing bicyclic and tricyclic macrocycles. The cation binding properties of these macrocycles were investigated by potentiometric titration, calorimetric titration, solvent extraction and NMR techniques. In addition, hydrophobic macrocycles were incorporated into dual hollow fiber and other membrane systems to investigate their membrane performance, especially in the proton-coupled transport mode. A study of the effect of methoxyalkyl macrocycle substituents on metal ion transport was completed. A new calorimeter was constructed which made it possible to study the thermodynamics of macrocycle-cation binding to very high temperatures. Measurements of thermodynamic data for the interaction of crown ethers with alkali and alkaline earth cations were achieved to 473 K. Molecular modeling work was begun for the first time on this project and fundamental principles were identified and developed for the establishment of working models in the future.

Physical Description

Medium: P; Size: 22 p.

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OSTI as DE97001768

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  • Other Information: PBD: 24 Aug 1996

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  • Other: DE97001768
  • Report No.: DOE/ER/13463--T3
  • Grant Number: FG02-86ER13463
  • DOI: 10.2172/418398 | External Link
  • Office of Scientific & Technical Information Report Number: 418398
  • Archival Resource Key: ark:/67531/metadc681995

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  • August 24, 1996

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  • July 25, 2015, 2:20 a.m.

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  • Nov. 5, 2015, 1:34 p.m.

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Lamb, J.D.; Izatt, R.M.; Bradshaw, J.S. & Shirts, R.B. Novel macrocyclic carriers for proton-coupled liquid membrane transport. Final report, report, August 24, 1996; United States. (digital.library.unt.edu/ark:/67531/metadc681995/: accessed September 19, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.