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Effective Gelation of Water Using a Series of Bis‐urea Dicarboxylic Acids
Author(s) -
Estroff Lara A.,
Hamilton Andrew D.
Publication year - 2000
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 - 10.1002/1521-3773(20001002)39:19<3447::aid-anie3447>3.0.co;2-x
Subject(s) - urea , ionic strength , chemistry , aqueous solution , dicarboxylic acid , polymer chemistry , chemical engineering , organic chemistry , engineering
At concentrations as low as 0.3 wt % a novel family of bis‐urea dicarboxylic acids gel water (see picture). The aggregation state (vesicles, gel, or fibers) depends on the pH, the ionic strength, and the molecular weight of the gelator. In this way, the gelation properties of an aqueous system are controlled by the molecular design.