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.

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

Two cadmium(II) coordination polymers as multi-functional luminescent sensors for the detection of Cr(VI) anions, dichloronitroaniline pesticide, and nitrofuran antibiotic in aqueous media.

A hydrolytically stable amino-functionalized Zinc(II) metal-organic framework containing nanocages for selective gas adsorption and luminescent sensing

Luminescent binuclear Zinc(II) organic framework as bifunctional water-stable chemosensor for efficient detection of antibiotics and Cr(VI) anions in water.

Development of a controllable drug delivery system is imperative and important to reduce the side-effects and enhance the therapeutic efficacy of drugs. Metal–organic frameworks (MOFs) and nanoscale MOFs (NMOFs), as porous hybrids constructed by polydentate bridging ligands and metal-connecting nodes, have attracted significant attention from the scientific community due to their tailorable compositions and structures, excellent porosity, and easier surface modification. Significant progress has been achieved in the past decade, but most attempts still remain in the proof-of-concept stage. This review highlights the latest advances in NMOFs for drug delivery systems and classifies the current drug-loading method into three strategies according to the location of the cargos and cargo-carrier interactions: encapsulation strategy, direct assembly strategy, and post-synthesis strategy. Each feature and the latest advances in these strategies are highlighted. Finally, the challenges and future perspectives in this field have been discussed.

Nanoscale metal–organic frameworks for drug delivery: a conventional platform with new promise

Ln-CPs constructed from unsymmetrical tetracarboxylic acid ligand: Tunable white-light emission and highly sensitive detection of CrO42-, Cr2O72-, MnO4- in water.

Yan-Ning Wang

Papers

Ln-CPs constructed from unsymmetrical tetracarboxylic acid ligand: Tunable white-light emission and highly sensitive detection of CrO42-, Cr2O72-, MnO4- in water.

Two new Zn2+/Cd2+ Metal-Organic Frameworks (MOFs) constructed from asymmetrical tricarboxylic acid ligands

A New Fluorescence MOF for Highly Sensitive Detection of Acetylacetone

Two Cu(II) coordination polymers assembled by 5-(3,4-dicarboxylphenoxy) nicotic acid: Synthesis, crystal structure and photoluminescence property