Spontaneous Symmetry Breaking in the Formation of Supramolecular Polymers: Implications for the Origin of Biological Homochirality
作者:Suneesh C. Karunakaran、Brian J. Cafferty、Angela Weigert‐Muñoz、Gary B. Schuster、Nicholas V. Hud
DOI:10.1002/anie.201812808
日期:2019.1.28
macroscopic homochiral domains of supramolecular polymers. These assemblies exhibit a high degree of chiral amplification. Addition of a small quantity of one handedness of a chiral derivative of CyCo6 generates exclusively homochiral structures. This system exhibits the highest reported degree of chiral amplification for dynamic helical polymers or supramolecular helices. Significantly, homochiral
非手性,单体,核碱基模拟物(2,4,6-三氨基嘧啶,TAP和氰尿酸衍生物,CyCo6)的水溶液自发组装成超分子聚合物的宏观同手性结构域。这些组装物表现出高度的手性扩增。CyCo6的少量单手性手性衍生物的添加仅产生同手性结构。对于动态螺旋聚合物或超分子螺旋,该系统显示出最高的手性扩增程度。重要的是,由氰尿酸(Cy)和核糖核苷酸(l-,d‐pTARC)是TAP与糖类反应自发产生的。这些发现支持以下假设:核酸同手性是超分子聚合物水平上对称性破坏的结果。