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1. Li ⁺ Ion-Conducting Sulfonate-Based Neutral Metal–Organic Framework

   https://doi.org/10.1021/acssuschemeng.8b06254  

   Panda, Dillip K.; Maity, Krishnendu; Palukoshka, Andrei; Ibrahim, Faysal; Saha, Sourav (February 2019, ACS Sustainable Chemistry & Engineering)
2. A New Electrically Conducting Metal–Organic Framework Featuring U-Shaped cis-Dipyridyl Tetrathiafulvalene Ligands

   https://doi.org/10.3389/fchem.2021.726544  

   Gordillo, Monica A.; Benavides, Paola A.; Spalding, Kaybriana; Saha, Sourav (October 2021, Frontiers in Chemistry)

   null (Ed.)

   A new electrically conducting 3D metal-organic framework (MOF) with a unique architecture was synthesized using 1,2,4,5-tetrakis-(4-carboxyphenyl)benzene (TCPB) a redox-active cis -dipyridyl-tetrathiafulvalene ( Z -DPTTF) ligand. While TCPB formed Zn 2 (COO) 4 secondary building units (SBUs), instead of connecting the Zn 2 -paddlewheel SBUs located in different planes and forming a traditional pillared paddlewheel MOF, the U-shaped Z -DPTTF ligands bridged the neighboring SBUs formed by the same TCPB ligand like a sine-curve along the b axis that created a new sine -MOF architecture. The pristine sine -MOF displayed an intrinsic electrical conductivity of 1 × 10 −8  S/m, which surged to 5 × 10 −7  S/m after I 2 doping due to partial oxidation of electron rich Z -DPTTF ligands that raised the charge-carrier concentration inside the framework. However, the conductivities of the pristine and I 2 -treated sine -MOFs were modest possibly because of large spatial distances between the ligands that prevented π-donor/acceptor charge-transfer interactions needed for effective through-space charge movement in 3D MOFs that lack through coordination-bond charge transport pathways. 

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3. 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. 

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4. Metal-organic framework portable chemical sensor

   https://doi.org/10.1016/j.snb.2020.128608  

   Zhu, Chen; Gerald, Rex E.; Chen, Yizheng; Huang, Jie (October 2020, Sensors and Actuators B: Chemical)

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5. Metal Organic Framework Derivative Improving Lithium Metal Anode Cycling

   https://doi.org/10.1002/adfm.201907579  

   Zhong, Yiren; Lin, Fang; Wang, Maoyu; Zhang, Yifang; Ma, Qing; Lin, Julia; Feng, Zhenxing; Wang, Hailiang (January 2020, Advanced Functional Materials)

   Abstract This work demonstrates a new approach in using metal organic framework (MOF) materials to improve Li metal batteries, a burgeoning rechargeable battery technology. Instead of using the MIL‐125‐Ti MOF structure directly, the material is decomposed into intimately‐mixed amorphous titanium dioxide and crystalline terephthalic acid. The resulting composite material outperforms the oxide alone, the organic component alone, and the parent MOF in suppressing Li dendrite growth and extending cycle life of Li metal electrodes. Coated on a commercial polypropylene separator, this material induces the formation of a desirable solid electrolyte interphase layer comprising mechanically flexible organic species and ionically conductive lithium nitride species, which in turn leads to Li||Cu and Li||Li cells that can stably operate for hundreds of charging–discharging cycles. In addition, this material strongly adsorbs lithium polysulfides and can also benefit the cathode of lithium–sulfur batteries. 

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