Obert Edouard, Bellot Mathilde, Bouteiller Laurent, Andrioletti Florence, Lehen-Ferrenbach Catherine, Boué François
Laboratoire de Chimie des Polymères, UMR 7610, CNRS, Université Pierre et Marie Curie, 4 place Jussieu, 75252 Paris Cedex 05, France.
J Am Chem Soc. 2007 Dec 19;129(50):15601-5. doi: 10.1021/ja074296l. Epub 2007 Nov 23.
A new bis-urea based supramolecular polymer is reported and shown by viscosimetry, neutron scattering (SANS), and calorimetry (ITC) to self-assemble in a wide range of solvents, encompassing the polarity scale from water to toluene. The presence of both hydrogen-bonding and hydrophobic groups ensures that self-assembly occurs in water, aprotic polar solvents, and nonpolar solvents. Both the driving force for the assembly and the exact structure of the filaments is solvent dependent, but whatever the solvent, long rigid filaments are formed in dynamic equilibrium with the monomer.
报道了一种新型的基于双脲的超分子聚合物，通过粘度测定法、中子散射（小角中子散射）和量热法（等温滴定量热法）表明，该聚合物能在包括从水到甲苯的极性范围内的多种溶剂中自组装。氢键和疏水基团的存在确保了自组装在水、非质子极性溶剂和非极性溶剂中都能发生。组装的驱动力和细丝的确切结构都取决于溶剂，但无论何种溶剂，都会形成长的刚性细丝，并与单体处于动态平衡。
