Fujian Provincial University Engineering Research Center of Industrial Biocatalysis, College of Chemistry and Materials Science, Fujian Normal University, Fuzhou 350007, PR China; Beijing National Laboratory for Molecular Sciences (BNLMS), State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, PR China.
Fujian Provincial University Engineering Research Center of Industrial Biocatalysis, College of Chemistry and Materials Science, Fujian Normal University, Fuzhou 350007, PR China.
J Colloid Interface Sci. 2022 Mar;609:627-636. doi: 10.1016/j.jcis.2021.11.073. Epub 2021 Nov 19.
General strategies leading to 2D assemblies promise a significant step forward in the development of supramolecular materials with diversity and superiority. Considering molecular packing parameter indicates a connection between molecular geometry and aggregate morphology, we predict the introduction of ionic surfactants as assembly crosslinker would be endowed to develop a methodology of 2D supramolecular assembles.
In this work, by introducing ionic surfactants such as sodium dodecylsulfate (SDS), the molecular packing parameter P in bolaamphiphile (A2G) system was increased, which successfully manipulated the transformation of the 3D vesicles into 2D membranes. This 2D membranes further showed excellent light and enzyme response, and thus 2D to 3D morphological conversion can be rationally controlled via UV/Vis light irradiation and alternate addition of β-CD and α-amylase. Significantly, the 2D feature revealed not only a remarkable fluorescence enhancement to luminescent molecules but also the ability to effectively remove pollutants from water through filtration.
We report a general and facile strategy for the construction of 2D supramolecular membranes, initiated by introducing ionic surfactants as assembly crosslinker to increase P. In the existence of stimulus response factors, 2D↔3D morphological conversion can be further controlled in a flexible manner, which opens up a new paradigm leading to interconvertible supramolecular materials.
通用策略可将二维组装体作为发展具有多样性和优越性的超分子材料的重要手段。考虑到分子堆积参数表明分子几何形状与聚集形态之间存在联系，我们预测引入离子型表面活性剂作为组装交联剂将赋予开发二维超分子组装体的方法。
在这项工作中，通过引入离子型表面活性剂，如十二烷基硫酸钠（SDS），可以增加两亲分子（A2G）体系中的分子堆积参数 P，从而成功地将 3D 囊泡转化为 2D 膜。这些 2D 膜进一步显示出优异的光和酶响应性能，因此可以通过紫外/可见光照射和交替添加β-CD 和α-淀粉酶来合理控制 2D 到 3D 形态的转换。重要的是，二维特性不仅显著增强了发光分子的荧光强度，而且还能够通过过滤有效地从水中去除污染物。
我们报告了一种构建二维超分子膜的通用且简便的策略，该策略通过引入离子型表面活性剂作为组装交联剂来增加 P。在存在刺激响应因素的情况下，可以进一步灵活地控制 2D↔3D 形态转换，这为可相互转化的超分子材料开辟了新的范例。
