作者:Renatus W. Sinkeldam、Michel H. C. J. van Houtem、Koen Pieterse、Jef A. J. M. Vekemans、E. W. Meijer
DOI:10.1002/chem.200600476
日期:2006.8.7
studies in THF demonstrate the dynamic nature of the secondary architecture, a characteristic of foldamers. In addition, the bisignated Cotton effect in water is opposite in sign to that in THF, suggestive for a solvent-dependent preference for one helical handedness. Mixing experiments prove the dominance of water in determining the handedness of the helical architecture. The solvent allows for control over
合成了具有亲水性侧链的聚(脲基邻苯二甲酰亚胺),以确保其在水性介质中的溶解度,并且已经通过UV / Vis和圆二色谱(CD)光谱进行了表征。水中依赖于温度和浓度的CD测量值显示出几乎不受温度和浓度影响的棉花效应,这表明分子内组织很强。THF中的类似研究表明,二级结构的动态性质是折叠剂的特征。此外,在水中双向作用的棉花效应与在THF中相反,这暗示着溶剂依赖性偏爱一种螺旋惯性。混合实验证明了水在确定螺旋结构的惯用性方面的优势。