作者:Fátima García、Julia Buendía、Luis Sánchez
DOI:10.1021/jo201055t
日期:2011.8.5
Two amphiphilic C3-symmetric OPE-based trisamides have been synthesized and their self-assembling features investigated in solution and on surface. Variable-temperature UV–vis experiments demonstrate the cooperative supramolecular polymerization of these trisamides that self-assemble by the operation of triple C═O···H–N H-bonding arrays between the amide functional groups and π–π stacking between the
合成了两种两亲性的基于C 3对称的OPE的三酰胺,并研究了它们在溶液中和表面上的自组装特征。可变温度的UV-vis实验表明,这些三酰胺的协同超分子聚合是通过酰胺官能团之间的三重C═O···H–N H键阵列的操作以及芳族化合物之间的π–π堆积而自组装的单位。聚集体的螺旋组织已通过低至1×10 –4的浓度的圆二色性证明乙腈中的M。在已报道的三酰胺中,大的疏水性芳族核充当疏溶剂性模块,阻碍了极性TEG链与酰胺H键之间的相互作用。该策略使得不需要通过链烷烃片段将酰胺官能团分离成极性三(乙二醇)链。非手性三酰胺1自组装成扁平的带状结构,通过添加少量生成扭曲条纹的手性2,手性会增强。