Abstract
Anion coordination chemistry has attracted much attention because anions play important roles in biology, medicine, catalysis, and environmental science. A large number of anion receptors that employ ureas, amides, indoles, pyrroles and other groups as the binding sites have been reported. Urea can be used as an effective unit to build anion receptors because of its ability of binding anions by donating two parallel hydrogen bonds to oxoanions. Thus the urea-based receptors have been greatly explored in recent years. By proper functionalization of urea-based receptors, they are supposed to be applied in environmental monitoring, membrane transporters, organocatalysis, supramolecular gelation and soft materials. This review highlights the developments of anion binding, recognition and separation by mono-, di-, and poly-ureas, and metal-assisted urea-containing receptors in recent years.
Original language | English |
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Pages (from-to) | 1939-1949 |
Number of pages | 11 |
Journal | Kao Teng Hsueh Hsiao Hua Heush Hsueh Pao/ Chemical Journal of Chinese Universities |
Volume | 32 |
Issue number | 9 |
Publication status | Published - Sept 2011 |
Externally published | Yes |
Keywords
- Anion receptor
- Binding
- Recognition
- Separation
- Urea