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Anion Detection by a Fluorescent Poly(squaramide): Self‐Assembly of Anion‐Binding Sites by Polymer Aggregation
Author(s) -
Rostami Ali,
Wei Chu Jun,
Guérin Gérald,
Taylor Mark S.
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.201006884
Subject(s) - squaramide , fluorescence , ion , chemistry , aggregate (composite) , membrane , selectivity , materials science , nanotechnology , organic chemistry , biochemistry , physics , quantum mechanics , organocatalysis , enantioselective synthesis , catalysis
Winner by aggregate : Incorporating an anion‐binding squaramide group into a polymeric architecture results in drastic alterations in the selectivity and magnitude of its anion‐induced response, resulting in a sensitive and discriminating turn‐on fluorescence sensor for dihydrogenphosphate ions. This unusual behavior is the result of a cooperative, anion‐triggered aggregation process (see picture; scale bar: 1 μm).