Hybrid Luminescent Materials by Incorporating Metal Halides into Metal-Organic and Covalent Organic Reticular Templates

We explore various reticular porous materials, such as metal-organic and covalent organic frameworks and polyhedra as molecular templates for formation of confined atomically defined solid-state structures within the pores by incorporation of main group metal halide (MH) compounds. MH materials are known to exhibit exceptional luminescence and other optoelectronic properties. Single crystals of the porous materials can be employed as molecular templates for crystallizing MHs within the cavities. In this way, geometry, functionality, electric charge and topology of the pores determines the structure of resulting metal halide units, what might enable rational synthesis of desired solids and gives access to structures which are not known to form otherwise, and thus further tailoring optoelectronic properties. Our current work focuses on explorations of various frameworks and polyhedra and MHs as hosts and guests, respectively, offering vast compositional and structural space to dive in.

本研究探索了多种网状多孔材料（reticular porous materials），包括金属有机框架（metal-organic frameworks）、共价有机框架（covalent organic frameworks）及其多面体，将其作为分子模板，通过掺入主族金属卤化物（main group metal halide, MH）化合物，在其孔道内构建受限的原子级精准固态结构。已知MH材料具备优异的发光性能与其他光电特性。可将该多孔材料的单晶用作分子模板，在其空腔内实现MH材料的结晶生长。通过该策略，孔道的几何结构、功能属性、电荷特性与拓扑结构将决定所得金属卤化物单元的结构，这有望实现目标固态材料的可控合成，并获得无法通过常规途径制备的结构，从而进一步调控其光电性能。本研究当前聚焦于探索以各类框架材料与多面体分别作为主体、MH材料作为客体的复合体系，该体系拥有极为广阔的组成与结构研究空间可供深入发掘。