Highly efficient extraction of sulfate ions with a tripodal hexaurea receptor

Chuandong Jia, Biao Wu*, Shaoguang Li, Xiaojuan Huang, Qilong Zhao, Qian Shu Li, Xiao Juan Yang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

172 Citations (Scopus)

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 languageEnglish
Pages (from-to)486-490
Number of pages5
JournalAngewandte Chemie - International Edition
Volume50
Issue number2
DOIs
Publication statusPublished - 10 Jan 2011
Externally publishedYes

Keywords

  • anion recognition
  • chelate effect
  • host-guest chemistry
  • hydrophobic effect
  • receptors

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