Zha Xinlin, Chen Yuanli, Fan Hui, Yang Yonggang, Xiong Yi, Xu Guilin, Yan Kun, Wang Yuedan, Xie Yi, Wang Dong
Hubei Key Laboratory of Advanced Textile Materials & Application, Wuhan Textile University, Yangguang Road 1, Wuhan, 430200, P. R. China.
College of Chemistry and Chemical Engineering, Suzhou University, Suzhou, 215123, P. R. China.
Angew Chem Int Ed Engl. 2021 Mar 29;60(14):7759-7769. doi: 10.1002/anie.202013790. Epub 2021 Feb 25.
Precise adjustment of microstructure and handedness of chiral nanomaterials is important to regulate their properties and performance. Herein, helical 3-aminophenol formaldehyde resin (APF) nanotubes and corresponding carbonaceous nanotubes with controllable handedness and optical activity were obtained via an external metal ion-mediated supramolecular co-templating method in an enantiomerically pure template system, in which an appropriate amount of Mn (Co or Ni ) with moderate coordination abilities can reverse the spatial arrangement of the phenylglycine-based amphiphilic template molecules through metal coordination. Different stacking modes of coordination complexes in disparate metal ion systems lead to diverse helical senses (diameter and pitch) of the obtained helical APF. In addition, this coordination mode of metal intervention can be applied to other amine-based helical polymer synthesis systems, which paves the way for the design of high-quality chiral nanomaterials with satisfactory physical parameters and properties.
精确调整手性纳米材料的微观结构和手性对于调控其性质和性能至关重要。在此，通过在对映体纯的模板体系中采用外部金属离子介导的超分子共模板法，获得了具有可控手性和光学活性的螺旋状3-氨基苯酚甲醛树脂（APF）纳米管及相应的碳质纳米管，其中适量具有适度配位能力的Mn（Co或Ni）可通过金属配位作用逆转基于苯甘氨酸的两亲性模板分子的空间排列。不同金属离子体系中配位复合物的不同堆积模式导致所获得的螺旋状APF具有不同的螺旋方向（直径和螺距）。此外，这种金属干预的配位模式可应用于其他基于胺的螺旋聚合物合成体系，为设计具有令人满意的物理参数和性质的高质量手性纳米材料铺平了道路。
