Macrocyclic Polyoxometalates: Selective Polyanion Binding and Ultrahigh Proton Conduction
Macrocyclic Polyoxometalates: Selective Polyanion Binding and Ultrahigh Proton Conduction
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大环多金属氧酸盐：选择性聚阴离子结合和超高质子传导
DOI：
10.1002/anie.202200666
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发表时间：
2022
期刊：
影响因子：
--
通讯作者：
Fang Xikui
中科院分区：
文献类型：
--
作者：
Zhu Minghui;Iwano Tsukasa;Tan Mengjin;Akutsu Daiki;Uchida Sayaka;Chen Guanying;Fang Xikui
用于构建大环的阴离子模板策略的合理开发在历史上仅限于小阴离子，但是大的多氧阴离子可以提供无与伦比的结构多样性和充足的结合位点。在这里，我们报告的{Mo 22 Fe 8}大环的形成使用Preyssler阴离子，[NaP 5 W30 O 110]14-（{P5 W30}），作为超分子模板。{Mo 22 Fe 8}大环在溶液中表现出选择性的阴离子结合行为。在固态下，1：2主体-客体复合物{P5 W30}2 {Mo 22 Fe 8}通过扩展的氢键网络比客体完全封装的相关1：1复合物更有效地传输质子。结果突出了巨大的潜力，这种阴离子模板的方法在生产大环系统的选择性阴离子识别和质子传导的目的。
The rational development of an anion templation strategy for the construction of macrocycles has been historically limited to small anions, but large polyoxoanions can offer unmatched structural diversity and ample binding sites. Here we report the formation of a {Mo22Fe8} macrocycle by using the Preyssler anion, [NaP5W30O110]14−({P5W30}), as a supramolecular template. The {Mo22Fe8} macrocycle displays selective anion binding behavior in solution. In the solid state, the 1 : 2 host–guest complex, {P5W30}2⊂{Mo22Fe8}, transports protons more effectively, through an extended hydrogen‐bonding network, than a related 1 : 1 complex where the guest is completely encapsulated. The results highlight the great potential this anion templation approach has in producing macrocyclic systems for selective anion recognition and proton conduction purposes.