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首页> 外文期刊>Chemistry: A European journal >Chiral Assembly of AIE-Active Achiral Molecules: An Odd Effect in Self-Assembly
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Chiral Assembly of AIE-Active Achiral Molecules: An Odd Effect in Self-Assembly

机译：AIE活性成型分子的手性组装：自组装中的奇数效果

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摘要

The induction of chirality in supramolecular structures through hierarchical self-assembly of achiral compounds and the control of their handedness are closely related to the evolution of life and the chiral amplification found in nature. Herein, it is shown that the combination of achiral tetraphenylethylene, an aggregation-induced emission (AIE)-active luminophore bearing four alkyl chains with an odd or even number of carbon atoms via an amide linkage in the molecular structure allows the induction and control of supramolecular chirality in well-defined helical superstructures by controlling the solvent composition and polarity. In particular, right-handed supramolecular structures were produced for an even number of carbon atoms in the alkyl chains, whereas an odd number led to the assembly of lefthanded superstructures. The twisted superstructure was visualised by SEM, and circular dichroism was used to observe chirality in the assembly. These controlled assemblies of AIEactive molecules are of potential practical value, such as templates for helical crystallisation, catalysis and formation of chiral mechanochromic luminescent superstructures.
机译：通过成型化合物的分层自组装和其手性质的等分子结构在超分子结构中的诱导与生命的演变和本质上的手性扩增密切相关。在此，示出了成立四苯基乙烯，聚集诱导的发射（AIE） - 活性发光体携带四个烷基链的聚集诱导的发光体通过分子结构中的酰胺键具有奇数或偶数碳原子的碳原子允许诱导和控制通过控制溶剂组合物和极性，通过定义螺旋上部结构的超分子手性。特别地，为烷基链中的偶数碳原子产生右手超分子结构，而奇数导致左旋式上层建筑的组装。通过SEM可视化扭曲的上部结构，并使用圆形二色性观察组装中的手性。可控制的AIeactive分子的组件具有潜在的实用价值，例如用于螺旋结晶，催化和形成手性机械亮度升级结构的模板。

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