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Highly Efficient Extraction of Sulfate Ions with a Tripodal Hexaurea Receptor
Author(s) -
Jia Chuandong,
Wu Biao,
Li Shaoguang,
Huang Xiaojuan,
Zhao Qilong,
Li QianShu,
Yang XiaoJuan
Publication year - 2011
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201004461
Subject(s) - sulfate , aqueous solution , chemistry , extraction (chemistry) , ion , aqueous two phase system , inorganic chemistry , chromatography , organic chemistry
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.