More Like this

1. Aperiodic metal–organic frameworks

   https://doi.org/10.1039/d0sc04798h  

   Oppenheim, Julius J.; Skorupskii, Grigorii; Dincă, Mircea (October 2020, Chemical Science)

   null (Ed.)

   Metal–organic frameworks (MOFs) represent one of the most diverse structural classes among solid state materials, yet few of them exhibit aperiodicity, or the existence of long-range order in the absence of translational symmetry. From this apparent conflict, a paradox has emerged: even though aperiodicity frequently arises in materials that contain the same bonding motifs as MOFs, aperiodic structures and MOFs appear to be nearly disjoint classes. In this perspective, we highlight a subset of the known aperiodic coordination polymers, including both incommensurate and quasicrystalline structures. We further comment upon possible reasons for the absence of such structures and propose routes to potentially access aperiodic MOFs. 

   more » « less
2. Metal–Organic Framework Nanoparticles

   https://doi.org/10.1002/adma.201800202  

   Wang, Shunzhi; McGuirk, C_Michael; d'Aquino, Andrea; Mason, Jarad_A; Mirkin, Chad_A (June 2018, Advanced Materials)

   Abstract Due to their well‐defined 3D architectures, permanent porosity, and diverse chemical functionalities, metal–organic framework nanoparticles (MOF NPs) are an emerging class of modular nanomaterials. Herein, recent developments in the synthesis and postsynthetic surface functionalization of MOF NPs that strengthen the fundamental understanding of how such structures form and grow are highlighted; the internal structure and external surface properties of these novel nanomaterials are highlighted as well. These fundamental advances have resulted in MOF NPs being used as components in chemical sensors, biological probes, and membrane separation materials, as well as building blocks for colloidal crystal engineering. 

   more » « less
3. Design and Characterization of Metal Nanoparticle Infiltrated Mesoporous Metal–Organic Frameworks

   https://doi.org/10.1021/acs.inorgchem.1c01433  

   Varghese, Juby R.; Wendt, Christian; Dix, Fletcher B.; Aulakh, Darpandeep; Sazama, Uta; Yakovenko, Andrey A.; Fröba, Michael; Wochnowski, Jörn; Goia, Dan V.; Wriedt, Mario (September 2021, Inorganic Chemistry)
4. Metal–Organic Frameworks with Low‐Valent Metal Nodes

   https://doi.org/10.1002/anie.202206353  

   Sikma, R. Eric; Balto, Krista P.; Figueroa, Joshua S.; Cohen, Seth M. (July 2022, Angewandte Chemie International Edition)

   Abstract Metal–organic frameworks (MOFs) are crystalline, 2‐ and 3‐dimensional coordination polymers formed by bonding interactions between metals and multitopic organic ligands. These are typically formed using hard Lewis basic organic ligands with high oxidation state metal ions. The use of low‐valent metals as structural elements in MOFs is far less common, despite the widespread use of such metals for catalysis, luminescence, and other applications. This Minireview focuses on recent advances in the field of low‐valent MOFs and offers a perspective on the future development of these materials. 

   more » « less
5. Statistical copolymer metal organic nanotubes

   https://doi.org/10.1039/D2SC06084A  

   Barrett, Jacob A.; Rosenmann, Nathan D.; Gnanasekaran, Karthikeyan; Carroll, Xian B.; Gianneschi, Nathan C.; Jenkins, David M. (January 2023, Chemical Science)

   Metal–organic nanotubes (MONTs) are 1-dimensional crystalline porous materials that are formed from ligands and metals in a manner identical to more typical 3-dimensional metal–organic frameworks (MOFs). MONTs form anisotropically in one dimension making them excellent candidates for linker engineering for control of chemical composition and spacing. A novel series of MONTs was synthesized utilizing a mixture of 1,2,4-ditriazole ligands containing both a fully protonated aryl moiety and its tetrafluorinated analog in ratios of, 0 : 1, 1 : 4, 1 : 1, 4 : 1, and 1 : 0, respectively. All MONTs were characterized by both bulk and nanoscale measurements, including SCXRD, PXRD, ssNMR and TEM, to determine the resulting co-polymer architecture (alternating, block, or statistical) and the ligand ratios in the solid materials. All characterization methods point towards statistical copolymerization of the materials in a manner analogous to 3D MOFs, all of which notably could be achieved without destructive analytical methods. 

   more » « less