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Doubly Docked Pseudorotaxanes
Author(s) -
Ashton Peter R.,
Fyfe Matthew C. T.,
MartínezDíaz M.Victoria,
Menzer Stephan,
Schiavo Cesare,
Stoddart J. Fraser,
White Andrew J. P.,
Williams David J.
Publication year - 1998
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/(sici)1521-3765(19980807)4:8<1523::aid-chem1523>3.0.co;2-v
Subject(s) - cationic polymerization , chemistry , hydrogen bond , supramolecular chemistry , ammonium , stereochemistry , phenylene , polymer chemistry , crystallography , combinatorial chemistry , molecule , organic chemistry , crystal structure , polymer
The snug fit of two suitably spaced dialkylammonium centers within the cavity of the macrocyclic polyether bis‐ p ‐phenylene[34]crown‐10 (BPP34C10) generates [2]pseudorotaxanes in which each cationic ammonium center “docks” with one of the macrocycle's two polyether loops (right), for the most part by means of hydrogen bonds. One such doubly docked [2]pseudorotaxane forms the basis of a prototypical chromophoric supramolecular switch triggered by alterations to the surrounding pH.