Premium
Anion‐Responsive Supramolecular Gels
Author(s) -
Maeda Hiromitsu
Publication year - 2008
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/chem.200801333
Subject(s) - supramolecular chemistry , stacking , van der waals force , hydrogen bond , molecule , ion , chemistry , amide , conjugated system , supramolecular assembly , metal ions in aqueous solution , urea , crystallography , polymer , organic chemistry
Supramolecular gels that change their state or structure in response to anion stimuli have been highlighted. Only a few examples exist of such supramolecular gels, the structures and properties of which can be controlled and modulated by interactions with anions. To form anion‐responsive dimensionally‐controlled organized structures, the constituent low‐molecular‐weight gelator molecules must act as anion receptors by possessing one or more of van der Waals interaction units (aliphatic chains), stacking π planes, hydrogen‐bonding sites, and metal‐coordination units. This Concept focuses on the gelation and transition behaviors of amide‐ and urea‐based anion‐stimulated systems, metal‐coordinated systems, and novel acyclic π‐conjugated oligopyrroles that act as “molecular flippers.”