Abstract
Fatal extraction: The Hofmeister bias for sulfate ions in aqueous environments can be overcome by using a tripodal hexaurea receptor (L) that completely encapsulates the sulfate ion in a complementary cavity protected by hydrophobic aromatic rings (see picture; C-gray, N-blue, O-red, S-yellow). Almost quantitative extraction of sulfate ions from an aqueous to an organic phase is achieved when this receptor is used as a liquid-liquid extractant.
Original language | English |
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Pages (from-to) | 486-490 |
Number of pages | 5 |
Journal | Angewandte Chemie - International Edition |
Volume | 50 |
Issue number | 2 |
DOIs | |
Publication status | Published - 10 Jan 2011 |
Externally published | Yes |
Keywords
- anion recognition
- chelate effect
- host-guest chemistry
- hydrophobic effect
- receptors