Hybrid Porous Nanomaterials

由一种以上类型的积木构成的复合材料可以表现出变革性、加性和突发性。这种性质不仅取决于组成成分，而且还取决于跨越多个长度尺度的内部结构。当使用纳米颗粒(NP)构建块时，这一点尤其关键，因为它们的显著特性本质上取决于尺寸、维度和相互排列。因此，自下而上组装纳米颗粒构建块对于构建新材料是非常可取的。然而，由不止一类纳米粒子组成的材料很少见，因为我们仍然缺乏连接和精确排列化学上不同的纳米组件的通用方法。多孔材料对当前和未来的技术至关重要--从催化和气体分离到药物输送或下一代电池。网状设计彻底改变了具有高度有序内部晶体结构的多孔材料的结构。然而，几乎不可能生产出显示一种以上内部结构的多孔材料，或者将孔隙率与其他类型的构建块结合在一起。最近出现了多孔纳米粒子，这使得我们可以考虑一类全新的材料，将多孔单元与其他纳米级构建块相结合。本项目将把以前在伪球形金属核上开发的动态共价纳米粒子的概念扩展到多孔金属-有机骨架(MOF)NPs。金属纳米粒子和MOF纳米粒子将被开发为具有互补的物理化学性质。ON-NP物理-有机研究将建立NP结合反应的结构-反应性关系。然后将利用所产生的认识来构建由纳米MOF和通过特定的动态分子连接物连接的金属构建块组成的杂化材料。由此产生的材料将被赋予层次化的结构控制和适应性行为，这是潜在的动态分子连接的特征。

Composite materials constructed from more than one type of building block can exhibit transformative, additive and emergent properties. Such properties depend not only on compositional makeup but also on internal structuring across multiple length-scales. This is particularly critical when working with nanoparticle (NP) building blocks, because their remarkable properties intrinsically depend on size, dimensionality and mutual arrangement. Therefore, the bottom-up assembly of nanoparticle building blocks is highly desirable for constructing new materials. Yet, materials constructed from more than one class of nanoparticle are rare, because we still lack general methods for interfacing and precisely arranging chemically distinct nanoscale components.Porous materials are critical for current and future technologies alike - from catalysis and gas separation to drug delivery or next-generation batteries. Reticular design has revolutionised the construction of porous materials with highly ordered internal crystal structures. Yet, it is virtually impossible to produce a porous material displaying more than one internal structure, or to integrate porosity with other types of building block. Recently, porous nanoparticles have emerged, which now allows us to consider a whole new class of materials that combine porous units with other nanoscale building blocks.This project will extend the concept of dynamic covalent nanoparticles - previously developed on pseudo-spherical metal cores - to porous metal-organic framework (MOF) NPs. Metal NPs and MOF NPs will be developed to have complementary physicochemical properties. On-NP physical-organic studies will establish structure-reactivity relationships for NP-bound reactions. The arising understanding will then be exploited to construct hybrid materials composed of nano-sized MOF and metal building blocks linked by specific dynamic molecular linkers. The resulting materials will be endowed with hierarchical structural control and adaptive behaviours that are characteristic of the underlying dynamic molecular links.