Hampson Elizabeth, Cameron Jamie M, Amin Sharad, Kyo Joungman, Watts Julie A, Oshio Hiroki, Newton Graham N
GSK Carbon Neutral Laboratory for Sustainable Chemistry, University of Nottingham, Nottingham, NG7 2GA, UK.
Graduate School of Pure and Applied Sciences, University of Tsukuba, Tennodai 1-1-1, Tsukuba, 305-8571, Japan.
Angew Chem Int Ed Engl. 2019 Dec 9;58(50):18281-18285. doi: 10.1002/anie.201912046. Epub 2019 Oct 24.
Access to asymmetrically functionalized polyoxometalates is a grand challenge as it could lead to new molecular nanomaterials with multiple or modular functionality. Now, a simple one-pot synthetic approach to the isolation of an asymmetrically functionalized organic-inorganic hybrid Wells-Dawson polyoxometalate in good yield is presented. The cluster bears two organophosphonate moieties with contrasting physical properties: a chelating metal-binding group, and a long aliphatic chain that facilitates solvent-dependent self-assembly into soft nanostructures. The orthogonal properties of the modular system are effectively demonstrated by controlled assembly of POM-based redox-active nanoparticles. This simple, high-yielding synthetic method is a promising new approach to the preparation of multi-functional hybrid metal oxide clusters, supermolecular systems, and soft-nanomaterials.
获得不对称功能化的多金属氧酸盐是一项巨大的挑战，因为这可能会产生具有多种或模块化功能的新型分子纳米材料。现在，本文介绍了一种简单的一锅合成方法，能够以良好的产率分离出一种不对称功能化的有机-无机杂化韦尔斯-道森型多金属氧酸盐。该簇合物带有两个具有不同物理性质的有机膦酸酯部分：一个螯合金属结合基团和一个长脂肪链，后者有助于溶剂依赖性自组装成软纳米结构。基于多金属氧酸盐的氧化还原活性纳米颗粒的可控组装有效地证明了模块化系统的正交性质。这种简单、高产率的合成方法是制备多功能杂化金属氧化物簇、超分子系统和软纳米材料的一种有前途的新方法。
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