Two-Dimensional Metal-Organic Framework Materials: Synthesis, Structures, Properties and Applications

Abstract

Among the recent developments in metal-organic frameworks (MOFs), porous layered coordination polymers (CPs) have garnered attention due to their modular nature and tunable structures. These factors enable a number of properties and applications, including gas and guest sorption, storage and separation of gases and small molecules, catalysis, luminescence, sensing, magnetism, and energy storage and conversion. Among MOFs, two-dimensional (2D) compounds are also known as 2D CPs or 2D MOFs. Since the discovery of graphene in 2004, 2D materials have also been widely studied. Several 2D MOFs are suitable for exfoliation as ultrathin nanosheets similar to graphene and other 2D materials, making these layered structures useful and unique for various technological applications. Furthermore, these layered structures have fascinating topological networks and entanglements. This review provides an overview of different aspects of 2D MOF layered architectures such as topology, interpenetration, structural transformations, properties, and applications.

Solvent‐Controlled Construction of Molecular Chains and Bowls/Sieves from a Bent Dipyridyl Ligand†

“…Self‐assembly of fascinating polymeric and discrete molecular architectures has attracted continuous research interests. [ 1‐10 ] While numerous porous coordination polymers have been constructed and widely used for guest storage and separation, [ 11‐15 ] discrete molecular containers are relatively few. [ 16‐18 ] Generally, metal/ligand building blocks with specific angularity are used to construct topologically simple structures such as rings and cages with high symmetries.…”

Luminescent, Helical and Highly Stable Zn(II) and Cd(II) Coordination Polymers: Structural Diversity and Selective Sensing of 4‐Nitroaniline in Water

“…For a few decades, coordination polymers (CPs) and metal organic frameworks (MOFs) have become the target materials for their potential applications in catalysis, separation, sensors, gas storage, luminescence, ion exchange, magnetism, etc. [1][2][3][4][5] Luminescent CPs (LCPs) and MOFs (LMOFs) are designed for sensing on the basis of their structural diversity, tailorable pore size and tuneable chemical and physical properties. For the development of LCPs and LMOFs, the introduction of either πelectron rich aromatic moieties with some recognition site into the frameworks or metal ions (Zn 2 + , Cd 2 + or Ln 3 + ) or the combination of both can be used to detect the emission signal during sensing.…”

“…For a few decades, coordination polymers (CPs) and metal organic frameworks (MOFs) have become the target materials for their potential applications in catalysis, separation, sensors, gas storage, luminescence, ion exchange, magnetism, etc [1–5] . Luminescent CPs (LCPs) and MOFs (LMOFs) are designed for sensing on the basis of their structural diversity, tailorable pore size and tuneable chemical and physical properties.…”

“…Luminescent CPs (LCPs) and MOFs (LMOFs) are designed for sensing on the basis of their structural diversity, tailorable pore size and tuneable chemical and physical properties. For the development of LCPs and LMOFs, the introduction of either π‐electron rich aromatic moieties with some recognition site into the frameworks or metal ions (Zn 2+ , Cd 2+ or Ln 3+ ) or the combination of both can be used to detect the emission signal during sensing [2d,4–15] …”

Coordination polymers with embedded recognition sites: lessons from cyclotriveratrylene-type ligands

“…1 Potential applications for such materials are wide-ranging and include catalysis, separations and extractions, medicinal applications, sensors, energy materials and gas storage. 2 MOFs and some coordination polymers are porous with robust channels and cavities that withstand post-construction removal of solvent molecules. A number of the applications for coordination polymers and MOFs are dependent on their ability to bind or host other molecular or ionic species within these pore-spaces.…”