Hierarchy of Asymmetry at Work: Chain-Dependent Helix-to-Helix Interactions in Supramolecular Polymers
作者:Sandra Díaz-Cabrera、Yeray Dorca、Joaquín Calbo、Juan Aragó、Rafael Gómez、Enrique Ortí、Luis Sánchez
DOI:10.1002/chem.201706070
日期:2018.2.26
A detailed investigation of the hierarchy of asymmetry operating in the self‐assembly of achiral (1) and chiral ((S)‐2 and (R)‐3) 1,3,5‐triphenylbenzenetricarboxamides (TPBAs) is reported. The aggregation of these TPBAs is conditioned by the point chirality at the peripheral side chains for (S)‐2 and (R)‐3. An efficient helix‐to‐helix interaction that goes further in the organization of fibrillar bundles
报告了对非手性(1)和手性((S)-2和(R)-3)1,3,5-三苯基苯三甲酰胺(TPBAs)自组装过程中不对称性层次的详细研究。这些TPBA的聚集取决于(S)-2和(R)-3的外围侧链的点手性。实验上检测到有效的螺旋-螺旋相互作用在原纤维束的组织中更进一步,理论上仅非手性TPBA支持1。非手性脂族侧链的有效相互指配产生社会自选,从而优先形成异手性大分子聚集体。