Highly Cooperative Formation of Bis-Urea Based Supramolecular Polymers
- 1 October 2003
- journal article
- Published by American Chemical Society (ACS) in Journal of the American Chemical Society
- Vol. 125 (43) , 13148-13154
- https://doi.org/10.1021/ja037589x
Abstract
Eleven bis-ureas have been synthesized, and some of their properties are reported. Several of these compounds form supramolecular polymers in organic solvents. The self-association is shown by FTIR spectroscopy to display cooperativity at two levels. The first level of cooperativity is due to the synergistic association of the two urea functions of a single molecule. The second level of cooperativity is revealed by the fact that the formation of dimers is less favored than that of long oligomers.Keywords
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