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首页> 外文期刊>Chemistry: A European journal >Synthesis of Doubly Ethyl-Bridged Bis(p-sulfonatocalix[4]arene) and Its Supramolecular Polymerization with Viologen Dimer
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Synthesis of Doubly Ethyl-Bridged Bis(p-sulfonatocalix[4]arene) and Its Supramolecular Polymerization with Viologen Dimer

机译：双乙基桥联双（对-磺基杯[4]芳烃）的合成及其与紫精二聚体的超分子聚合

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摘要

A water-soluble supramolecular polymer with a high degree of polymerization and viscosity has been constructed based on the strong host–guest interaction between p-sulfonatocalix[4]arenes (SC4As) and viologen. A homoditopic doubly ethyl-bridged bis(p-sulfonatocalix[4]arene) (d-SC4A) was prepared and its binding behavior towards methyl viologen compared with the singly ethyl-bridged bis(p-sulfonatocalix[4]arene) (s-SC4A) by NMR spectroscopy and isothermal titration calorimetry. By employing a viologen dimer (bisMV~(4+)) as the homoditopic guest, two linear AA/BB-type supramolecular polymers, d-SC4AつbisMV~(4+) and s-SC4AつbisMV~(4+), were successfully constructed. Compared with s-SC4AつbisMV~(4+), d-SC4AつbisMV~(4+) shows much higher solubility and viscosity, and has also been characterized by viscosity, diffusion-ordered NMR spectroscopy, dynamic light scattering, and atomic force microscopy measurements. Furthermore, the polymer is responsive to electrostimulus as viologen is electroactive, which was studied by cyclic voltammetry. This study represents a proof-of-principle as the polymer can potentially be applied as a self-healing and degradable polymeric material.
机译：基于对-磺基对杯[4]芳烃（SC4As）和紫精之间强的主体-客体相互作用，构建了具有高聚合度和粘度的水溶性超分子聚合物。制备了同位双双乙基桥双（对-磺基杯[4]芳烃）（d-SC4A），与单乙基桥双（对-磺基杯[4]芳烃）（s- SC4A）通过NMR光谱和等温滴定量热法。通过使用紫精二聚体（bisMV〜（4+））作为同位异位客体，两种线性AA / BB型超分子聚合物d-SC4AつbisMV〜（4+）和s-SC4AつbisMV〜（4+），被成功建造。与s-SC4AつbisMV〜（4+）相比，d-SC4AつbisMV〜（4+）具有更高的溶解度和粘度，并且具有粘度，扩散有序NMR光谱，动态光散射和原子性等特点。力显微镜测量。此外，由于紫精是电活性的，因此聚合物对电刺激具有响应性，这已通过循环伏安法进行了研究。这项研究代表了一项原则证明，因为该聚合物可以潜在地用作自修复和可降解的聚合物材料。

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