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超声诱导的多金属氧簇基交联超分子聚合物凝胶
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摘要
我们设计合成了含柱[5]芳烃的多金属氧簇复合物(SiS EP,Figure 1a),研究了它们和不同中性双配位客体的主客体化学,我们发现客体可以进入SiS EP中柱[5]芳烃的腔体里形成贯穿的轮烷结构,这意味着我们可能得到多金属氧簇封端的超分子聚轮烷。在高浓度下,我们得到了SiS EP?G2交联的超分子聚合物,超声处理后,交联的超分子复合物转化成凝胶。凝胶的透射电镜显示为交联的纤维结构(Figure 1b)。该研究结果不仅丰富了多金属氧簇复合物的主客体化学~([1]),而且为构筑离子有机无机骨架化合物~([2])提供了可能。
A new pillar[5]arene contained polyoxometalate complex(SiS EP, Figure 1a) has been successfully prepared, and then the host-guest chemistry of SiS EP host with different neutral ditopic guest were well investigated. Guest G2 axle can fully thread the cavity of pillar[5]arene, to form a interpenetrated structure, which means that POM locked supramolecular polyrotaxane may be obtained. The cross-linked supramolecular polymer SiS EP?G2 was constructed at high concentration, furthermore, supramolecular gel formed after ultrasound. TEM image shows the cross-linked fibers of the gel(Figure 1b). This research not only enrichs the host-guest chemistry of polyoxometalate complex, but also provides the opportunity to construct ionic organic-inorganic hybrid framework.
引文
[1]He,Z.F.;Li,B.;Ai,H.;Li,H.L.;Wu,L.X.Chem.Comm.2013,49:8039.
    [2]Yue,L.;Wang,S.;Zhou,D.;Zhang,H.;Li,B.;Wu,L.X.Nat.Commun.2016,7:10742.

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