Simic Vesna, Bouteiller Laurent, Jalabert Matthieu
Laboratoire de Chimie des Polymères, UMR 7610, Université Pierre et Marie Curie, 4 place Jussieu, 75252 Paris Cedex 05, France.
J Am Chem Soc. 2003 Oct 29;125(43):13148-54. doi: 10.1021/ja037589x.
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.
已经合成了十一种双脲，并报道了它们的一些性质。其中几种化合物在有机溶剂中形成超分子聚合物。傅里叶变换红外光谱表明，自缔合在两个层面上表现出协同性。第一个协同层面是由于单个分子的两个脲官能团的协同缔合。第二个协同层面是由二聚体的形成不如长链低聚物的形成更有利这一事实揭示的。
