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Title: Anion separation with metal-organic frameworks

Abstract

The application of metal-organic frameworks (MOFs) to anion separations with a special emphasis on anion selectivity is reviewed. The coordination frameworks are classified on the basis of the main interactions to the included anion, from weak and non-specific van der Waals forces to more specific interactions such as coordination to Lewis acid metal centers or hydrogen bonding. The importance of anion solvation phenomena to the observed anion selectivities is highlighted, and strategies for reversing the Hofmeister bias that favors large, less hydrophilic anions, and for obtaining peak selectivities based on shape recognition are delineated. Functionalization of the anion-binding sites in MOFs with strong and directional hydrogen-bonding groups that are complementary to the included anion, combined with organizational rigidity of the coordination framework, appears to be the most promising approach for achieving non-Hofmeister selectivity.

Authors:
 [1];  [1]
  1. ORNL
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
931318
DOE Contract Number:  
DE-AC05-00OR22725
Resource Type:
Journal Article
Resource Relation:
Journal Name: European Journal of Inorganic Chemistry; Journal Volume: 10; Journal Issue: 10
Country of Publication:
United States
Language:
English
Subject:
08 HYDROGEN; ANIONS; BONDING; HYDROGEN; LEWIS ACIDS; SHAPE; SOLVATION; VAN DER WAALS FORCES

Citation Formats

Custelcean, Radu, and Moyer, Bruce A. Anion separation with metal-organic frameworks. United States: N. p., 2007. Web. doi:10.1002/ejic.200700018.
Custelcean, Radu, & Moyer, Bruce A. Anion separation with metal-organic frameworks. United States. doi:10.1002/ejic.200700018.
Custelcean, Radu, and Moyer, Bruce A. Mon . "Anion separation with metal-organic frameworks". United States. doi:10.1002/ejic.200700018.
@article{osti_931318,
title = {Anion separation with metal-organic frameworks},
author = {Custelcean, Radu and Moyer, Bruce A},
abstractNote = {The application of metal-organic frameworks (MOFs) to anion separations with a special emphasis on anion selectivity is reviewed. The coordination frameworks are classified on the basis of the main interactions to the included anion, from weak and non-specific van der Waals forces to more specific interactions such as coordination to Lewis acid metal centers or hydrogen bonding. The importance of anion solvation phenomena to the observed anion selectivities is highlighted, and strategies for reversing the Hofmeister bias that favors large, less hydrophilic anions, and for obtaining peak selectivities based on shape recognition are delineated. Functionalization of the anion-binding sites in MOFs with strong and directional hydrogen-bonding groups that are complementary to the included anion, combined with organizational rigidity of the coordination framework, appears to be the most promising approach for achieving non-Hofmeister selectivity.},
doi = {10.1002/ejic.200700018},
journal = {European Journal of Inorganic Chemistry},
number = 10,
volume = 10,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2007},
month = {Mon Jan 01 00:00:00 EST 2007}
}