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Calix[ n ]bipyrroles: Synthesis, Characterization, and Anion‐Binding Studies
Author(s) -
Sessler Jonathan L.,
An Deqiang,
Cho WonSeob,
Lynch Vincent
Publication year - 2003
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.200350941
Subject(s) - characterization (materials science) , chemistry , combinatorial chemistry , materials science , nanotechnology
Bigger is better: Preliminary anion‐binding studies reveal that bipyrrole‐containing macrocycle calix[3]bipyrrole 2 binds large halide anions (for example, Br − ) with affinities that are substantially enhanced relative to those of the smaller pyrrole‐containing calix[4]pyrrole 1 . The complexation has been studied by 1 H NMR spectroscopy, isothermal titration calorimetry, and X‐ray crystallography. In addition, the synthesis of the even larger calix[4]bipyrrole was achieved.