Coordination Programming of Two-Dimensional Metal Complex Frameworks

Abstract

Since the discovery of graphene, two-dimensional materials with atomic thickness have attracted much attention because of their characteristic physical and chemical properties. Recently, coordination nanosheets (CONASHs) came into the world as new series of two-dimensional frameworks, which can show various functions based on metal complexes formed by numerous combinations of metal ions and ligands. This Feature Article provides an overview of recent progress in synthesizing CONASHs and in elucidating their intriguing electrical, sensing, and catalytic properties. We also review recent theoretical studies on the prediction of the unique electronic structures, magnetism, and catalytic ability of materials based on CONASHs. Future prospects for applying CONASHs to novel applications are also discussed.

Structural Engineering of Low‐Dimensional Metal–Organic Frameworks: Synthesis, Properties, and Applications

“…[188] Specifically, adding the aqueous solution of Zn(Ac) 2 to the CH 2 Cl 2 solution with dipyrrin ligand formed a water/oil interface, in which Zn 2+ and dipyrrin ligands spontaneously assembled at the interface and react to form 2D MOF films. [190][191][192] Additionally, 2D MOFs can be also prepared at liquid-solid interfaces. Recently, the same group prepared a bis-(terpyridine)zinc(II) [189] complex at the H 2 O/CH 2 Cl 2 interface relying on a similar procedure, demonstrating the versatility of this method.…”

Metal–Organic Nanosheets Formed via Defect-Mediated Transformation of a Hafnium Metal–Organic Framework

“…27−29 Metal–organic nanosheets have shown great promise as electronic sensors, 30 gas sorption membranes, 31 and catalysts, 32 but the range of metal–organic nanosheets is currently dramatically more constrained than for three-dimensional (3D) MOFs. Most current synthesis has focused on three routes: 33 assembly at an interface, 30,34 synthesis of nanosheets in bulk solution, 31,32 and liquid-phase exfoliation of weakly bound 2D layered materials (including with the assistance of surfactants). 35,36 To the best of our knowledge, there have been no reports of the synthesis of nanosheets from 3D framework materials, as this requires the breaking of strong metal–ligand bonds.…”

High temperature ferromagnetism in π-conjugated two-dimensional metal–organic frameworks

“…1 2D materials such as graphene and transition metal (TM) dichalcogenides exhibit fundamentally new properties that could be essential for next-generation electronic, photonic and renewable-energy applications. 2–6 Recently, 2D metal–organic frameworks (MOFs) 7–16 have emerged as a new class of hybrid inorganic–organic 2D materials marked by their intrinsic structural porosity, chemical tunability and high electrical conductivity. 17 These materials are synthesized through a bottom-up approach, by combining aromatic organic moieties that can ligate square-planar metal ions.…”