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二维材料以其优异的物理化学性能受到人们的广泛关注.二维共价有机框架(2D COFs)是近年来发展的一类通过共价键连接的多孔有机晶体材料.2D COFs材料的多孔性、结晶性及二维方向的π电子共轭体系、层间有序的π-π柱状堆积,赋予了该材料优良的物理化学性质.通过拓扑结构设计和单体选择制备的2D COFs材料具有密度低、结构有序、比表面积大、孔径尺寸和结构可调等特点,并可以通过后合成修饰、孔穴客体填充或负载、材料复合等方式实现对2D COFs材料的功能化.另外,基于表面合成等方法,还可以在一定的基底表面制备出取向、有序的2D COFs单分子层或薄膜.本文综述了2D COFs材料的分子结构设计及功能化,及其在物质吸附储存和输运、催化、能量存储与转化、光电子学等领域的应用.
Two-dimensional materials have drawn much attention due to their excellent physicochemical properties.Double-dimensional covalent organic frameworks (2D COFs) are a series of porous organic crystalline materials that have been covalently bonded in recent years.The porosity of 2D COFs , Crystalline and two-dimensional π-electron conjugate system, and the orderly π-π column stacking, giving the material excellent physical and chemical properties of 2D COFs prepared by topology design and monomer selection has the density Low structure, orderly structure, large specific surface area, adjustable aperture size and structure, and functionalization of 2D COFs materials can be achieved by post-synthesis modification, filling or loading of cavities, material compounding, etc. In addition, And other methods, but also can be prepared on a certain substrate surface orientation, orderly 2DCOFs monolayers or films.In this paper, 2DCOFs molecular structure design and functionalization, and its material adsorption storage and transport, catalytic , Energy storage and conversion, optoelectronics and other fields.