Supramolecular Chirality Transfer toward Chiral Aggregation: Asymmetric Hierarchical Self-Assembly.
Supramolecular Chirality Transfer toward Chiral Aggregation: Asymmetric Hierarchical Self-Assembly.
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超分子手性向手性聚集的转移：不对称分层自组装
DOI：
10.1002/advs.202002132
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发表时间：
2021-04
期刊：
影响因子：
--
通讯作者：
Li Q
中科院分区：
文献类型：
--
作者：
Huang S;Yu H;Li Q
自组装作为一种典型的自底向上的功能材料制造策略，已被应用于具有精细手性纳米结构的手性材料的制造。手性纳米结构在不对称催化、手性传感、手性电子学、光子学，甚至多种生物功能的实现等方面都显示出巨大的潜力。根据现有的研究，超分子手性转移过程结合层次自组装在多尺度手性结构的制造中起着至关重要的作用。本进展报告重点关注手性或非手性分子的分层自组装，这些分子在不同环境中以不对称空间结构聚集，如扭曲带、螺旋和超螺旋。本文综述了近年来基于各种超分子相互作用的手性转移诱导自组装的研究进展。此外，还探讨了不同环境和系统状态（包括溶液、凝聚态、凝胶体系、界面）对不对称分层自组装的影响以及手性的表达。此外，本文还讨论了促进手性偏倚的驱动力以及在手性感觉的表达、转移和扩增中起重要作用的超分子相互作用。超分子和聚集性手性产生于初始的手性偏置，通过超分子手性转移导致各种层次自组装结构，这受到不同环境的显著影响。例如，溶液中的手性组合、凝聚态中的螺旋结构、凝胶中的手性网络和界面处的手性排列都是有利的。
Self‐assembly, as a typical bottom‐up strategy for the fabrication of functional materials, has been applied to fabricate chiral materials with subtle chiral nanostructures. The chiral nanostructures exhibit great potential in asymmetric catalysis, chiral sensing, chiral electronics, photonics, and even the realization of several biological functions. According to existing studies, the supramolecular chirality transfer process combined with hierarchical self‐assembly plays a vital role in the fabrication of multiscale chiral structures. This progress report focuses on the hierarchical self‐assembly of chiral or achiral molecules that aggregate with asymmetric spatial structures such as twisted bands, helices, and superhelices in different environments. Herein, recent studies on the chirality transfer induced self‐assembly based on a variety of supramolecular interactions are summarized. In addition, the influence of different environments and the states of systems including solutions, condensed states, gel systems, interfaces on the asymmetric hierarchical self‐assembly, and the expression of chirality are explored. Moreover, both the driving forces that facilitate chiral bias and the supramolecular interactions that play an important role in the expression, transfer, and amplification of the chiral sense are correspondingly discussed. Supramolecular and aggregation chirality, that emerges from an initial chiral bias, leads to a variety of hierarchically self‐assembled structures through a supramolecular chirality transfer, which is significantly influenced by different environments. For example, chiral assemblies are favored in solution, helical structures in the condensed state, chiral networks in gel, and chiral arrangement at the interface.
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