Article
Chemistry, Multidisciplinary
Karen D. J. Hindricks, Andreas Schaate, Peter Behrens
Summary: The availability of highly adaptable materials in suitable shapes is essential for fabricating next-generation MOF-based devices. In this study, thin films of a photoreactive benzophenone unit-containing metal-organic framework (MOF) were presented. Crystalline, oriented, and porous films of the zirconium-based bzpdc-MOF were prepared by direct growth on silicon or glass substrates. Through photochemical modification of the Zr-bzpdc-MOF films, various properties can be tuned by covalently attaching modifying agents, including small molecules and grafting-from polymerization reactions. Furthermore, 2D structuring and photo-writing of defined structures, such as micro-patterned MOF surfaces, are possible via a photolithographic approach.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Sophia S. Boyadjieva, Francesca C. N. Firth, Mohammad R. Alizadeh Kiapi, David Fairen-Jimenez, Sanliang Ling, Matthew J. Cliffe, Ross S. Forgan
Summary: Careful control of synthetic conditions can enhance the structural diversity of metal-organic frameworks (MOFs). In this study, hcp topology MOFs of Zr(iv) and Hf(iv) linked by (ethyne-1,2-diyl)dibenzoate were prepared using modulated self-assembly. The addition of acetic acid and water was crucial in generating phase pure hcp topology materials with high crystallinity and porosity. Quantitative bromination of the linker resulted in partial degradation of the hcp phase, but new materials were discovered through adjustment of synthetic parameters.
Article
Chemistry, Multidisciplinary
Belen Lerma-Berlanga, Carolina R. Ganivet, Neyvis Almora-Barrios, Sergio Tatay, Yong Peng, Josep Albero, Oscar Fabelo, Javier Gonzalez-Platas, Hermenegildo Garcia, Natalia M. Padial, Carlos Marti-Gastaldo
Summary: Metal-Organic Frameworks are used as crystalline matrices to synthesize multiple component or multivariate solids, allowing for property customization. By optimizing synthesis through high-throughput methods, it is possible to create multivariate frameworks with efficient light sensitization, chemical stability, and porosity for photocatalysis applications. Solvent-assisted linker exchange reactions can control the distribution of linkers in crystals, affecting their performance in photocatalytic activities.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Nanoscience & Nanotechnology
Matthew J. Hurlock, Leiduan Hao, Kyle W. Kriegsman, Xiaofeng Guo, Michael O'Keeffe, Qiang Zhang
Summary: Two new zirconium MOFs, WSU-6 and WSU-7, were synthesized through postsynthetic modifications, with different topologies and secondary building units. The structures and photoluminescence properties of these materials were studied.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Inorganic & Nuclear
Felix Steinke, Ali Javed, Stephan Woehlbrandt, Michael Tiemann, Norbert Stock
Summary: The tetratopic linker H8TPPE was used to synthesize three new porous metal-organic frameworks under hydrothermal conditions. The crystal structures showed small differences and proton conductivity measurements revealed different mechanisms. Thorough characterization through various methods was conducted.
DALTON TRANSACTIONS
(2021)
Article
Chemistry, Multidisciplinary
Nikita Hanikel, Daria Kurandina, Saumil Chheda, Zhiling Zheng, Zichao Rong, S. Ephraim Neumann, Joachim Sauer, J. Ilja Siepmann, Laura Gagliardi, Omar M. Yaghi
Summary: A linker extension strategy is proposed to generate metal-organic frameworks (MOFs) with enhanced moisture-capturing properties. The design approach results in MOF-LA2-1 {[Al(OH)(PZVDC)], featuring a 50% increase in water capacity compared to MOF-303, the state-of-the-art water-harvesting material. The strategy not only increases the pore volume of the MOF, but also retains its ability to capture and release water in arid environments, while reducing regeneration heat and temperature.
ACS CENTRAL SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
R. Eric Sikma, Seth M. Cohen
Summary: This study reports the rational design and synthesis of three-dimensional metal-organic frameworks (MOFs) with Pd-0 and Pt-0 nodes using tetratopic phosphine ligands. Five new MOFs have been synthesized by varying the phosphine ligands and metal precursors, and they are the first examples of phosphine-metal bonded MOFs. These MOFs exhibit solid-state luminescence with significantly red-shifted emission maxima compared to Pd(PPh3)(4). Additionally, a Rh-I low-valent coordination solid based on the same linker design is reported, which displays solid-state luminescence not observed in the molecular analogue.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Review
Chemistry, Inorganic & Nuclear
Ahmed Alzamly, Maram Bakiro, Salwa Hussein Ahmed, Lamia A. Siddig, Ha L. Nguyen
Summary: This review provides a comprehensive overview of the application of metal-organic frameworks (MOFs) as catalysts for alpha-olefin oligomerization and polymerization. Designed MOFs, MOFs with postsynthetic modification, and MOFs with mixed-metal clusters are discussed. The use of MOFs as non-selective catalysts for alpha-olefin oligomerization and polymerization is also presented. Challenges and perspectives for future research are highlighted.
COORDINATION CHEMISTRY REVIEWS
(2022)
Review
Chemistry, Multidisciplinary
G. Shreeraj, Arkaprabha Giri, Abhijit Patra
Summary: Covalent organic frameworks (COFs) are a rapidly developing family of porous organic materials that have attracted significant research interest. The use of dynamic covalent chemistry (DCC) and postsynthetic linker exchange (PLE) technique allows for the construction and control of COFs' properties. This article highlights the recent advancements (from 2017 to 2023) in the PLE strategy for highly crystalline and porous COFs, discussing mechanistic insights and future applications.
Article
Materials Science, Composites
Ying Li, Bo Jiang, Yudong Huang
Summary: In this study, a carbon fiber/epoxy composite system with interfacial self-healing based on Diels-Alder reaction was constructed. The use of metal-organic frameworks (MOF) as nanofillers improved the mechanical properties of the interface and enhanced the surface energy of the carbon fiber. The self-healing efficiency of the interface was demonstrated to be 90.60%.
COMPOSITES SCIENCE AND TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Hoai T. B. Pham, Ji Yong Choi, Shaofeng Huang, Xubo Wang, Adam Claman, Michael Stodolka, Sadegh Yazdi, Sandeep Sharma, Wei Zhang, Jihye Park
Summary: The development of 2D electrically conductive metal-organic frameworks (EC-MOFs) has expanded the applications of MOFs. This study presents a new EC-MOF with a large surface area, high electrical conductivity, and tunable particle size. The framework also utilizes functional groups to host heterometal ions, providing new opportunities for expanding the library of EC-MOFs and exploring electronic applications.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Li-Hui Cao, Yan Yang, Xiao-Han Tang, Xu Wang, Zheng Yin
Summary: By controlling the length of the substituents on organic ligands, the framework structure of metal-organic frameworks (MOFs) can be transformed, resulting in changes in pore size and structural stability.
CRYSTAL GROWTH & DESIGN
(2022)
Article
Chemistry, Physical
Kanghui Xiong, Yuexin Wang, Fulin Zhang, Xia Li, Xianjun Lang
Summary: This study synthesized three beta-ketoenamine COFs with different linker lengths and compared their photocatalytic activities. The results showed that the linker length plays an important role in the photocatalytic performance of COFs, and a moderate linker length can enhance the photocatalytic conversion rate.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Multidisciplinary
Sara Rojas, Amalia Garcia-Garcia, Tania Hidalgo, Maria Rosales, Daniel Ruiz-Camino, Pablo Salcedo-Abraira, Helena Montes-Andres, Duane Choquesillo-Lazarte, Roberto Rosal, Patricia Horcajada, Antonio Rodriguez-Dieguez
Summary: Metal-organic frameworks (MOFs) can serve as reservoirs for metal ions with antibacterial effects. Two novel Zn-based MOFs, GR-MOF-8 and GR-MOF-9, were synthesized and characterized. Both materials exhibited antibacterial activity against Staphylococcus aureus and Escherichia Coli, with GR-MOF-8 showing the highest inhibitory action.
Article
Chemistry, Inorganic & Nuclear
Huai-Ming Li, Guan-Dong Li, Jun-Yu Li, Teng Zhang
Summary: An iodine-functionalized metal-organic framework (MOF), UiO-68-I, was synthesized and showed good catalytic activity for dibromination of alkenes and alkynes. Its low catalyst loading of 1% allows for efficient recycling and recovery. Mechanistic studies suggest that UiO-68-I may accelerate the reaction by triggering the formation of molecular bromine through a radical intermediate. The activity and stability of UiO-68-I surpasses previous reports on organoiodine catalysts, highlighting the potential of iodine-functionalized MOFs as recyclable heterogeneous hypervalent iodine reagents or catalysts.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Ruben Heimboeckel, Sebastian Kraas, Frank Hoffmann, Michael Froeba
APPLIED SURFACE SCIENCE
(2018)
Article
Chemistry, Multidisciplinary
Thorsten von Drathen, Frank Hoffmann, Malte Brasholz
CHEMISTRY-A EUROPEAN JOURNAL
(2018)
Article
Chemistry, Multidisciplinary
Oussama Yahiaoui, Andrew N. Fitch, Frank Hoffman, Michael Froeba, Arne Thomas, Jerome Roeser
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2018)
Article
Chemistry, Applied
Anika C. Juhl, Carl-Philipp Elverfeldt, Frank Hoffmann, Michael Froeba
MICROPOROUS AND MESOPOROUS MATERIALS
(2018)
Article
Chemistry, Physical
Arafat Hossain Khan, Katharina Peikert, Frank Hoffmann, Michael Froeba, Marko Bertmer
JOURNAL OF PHYSICAL CHEMISTRY C
(2019)
Article
Chemistry, Multidisciplinary
Eva Schendera, Lisa-Natascha Unkel, Phung Phan Huyen Quyen, Gwen Salkewitz, Frank Hoffmann, Alexander Villinger, Malte Brasholz
CHEMISTRY-A EUROPEAN JOURNAL
(2020)
Article
Chemistry, Multidisciplinary
Mario Frahm, Thorsten von Drathen, Lisa Marie Gronbach, Alice Voss, Felix Lorenz, Jonas Bresien, Alexander Villinger, Frank Hoffmann, Malte Brasholz
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2020)
Article
Chemistry, Multidisciplinary
Artem S. Poryvaev, Eva Gjuzi, Daniil M. Polyukhov, Frank Hoffmann, Michael Froba, Matvey V. Fedin
Summary: This study proposes using radical-grafted mesoporous silica as a versatile nanoplatform for spin-based QC/QIP, utilizing stable organic radicals for efficient spin manipulation with long electron spin decoherence time. The mesoporous structure of these composites is nuclear-spin free and allows for embedding guest molecules, promoting robustness and tunability as highly promising nanoplatforms for future QC/QIP developments.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Applied
Natascha Speil, Frank Hoffmann, Felix J. Brieler, Michael Froeba
Summary: Pseudomorphic transformation of silica materials is a versatile approach for the fabrication of porous phases, which allows independent control of particle morphology and pore structure. The mechanism and models for the transformation process are still controversial, with pure homogeneous distribution and core-shell models being extreme poles in the debate. Time-resolved conversion of parent silica materials provides insights into the detailed mechanism of pseudomorphic transformation.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Multidisciplinary Sciences
Frank Hoffmann
Summary: This chapter provides an overview of how framework-like crystalline compounds can be considered as nets, and how this topological approach helps to categorize and develop new framework structures.
PHYSICAL SCIENCES REVIEWS
(2022)
Article
Nanoscience & Nanotechnology
Artem S. Poryvaev, Eva Gjuzi, Anastasiya A. Yazikova, Daniil M. Polyukhov, Yana N. Albrekht, Aleksandr A. Efremov, Nikita A. Kudriavykh, Vadim V. Yanshole, Frank Hoffmann, Michael Froeba, Matvey Fedin
Summary: This work proposes a new type of mesoporous material that can capture nitrogen monoxide (NO) from air. The material combines a robust silica scaffold and radicals acting as NO traps, making it highly promising for environmental applications.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Ram R. R. Prasad, Charlotte Pleass, Amber L. Rigg, David B. Cordes, Magdalena M. Lozinska, Veselina M. Georgieva, Frank Hoffmann, Alexandra M. Z. Slawin, Paul A. Wright
Summary: The interpenetrated multicomponent MIL-142(Sc) MOFs were synthesized using various linkers, resulting in different structures and porosity as revealed by single crystal X-ray diffraction analysis. The study highlights the influence of different ligands on the properties of metal-organic frameworks.
Article
Chemistry, Inorganic & Nuclear
Timo Stein, Frank Hoffmann, Michael Froeba
DALTON TRANSACTIONS
(2019)
Article
Chemistry, Physical
Ram R. R. Prasad, Sarah E. Seidner, David B. Cordes, Magdalena M. Lozinska, Daniel M. Dawson, Megan J. Thompson, Tina Duren, Kristina K. Chakarova, Mihail Y. Mihaylov, Konstantin I. Hadjiivanov, Frank Hoffmann, Alexandra M. Z. Slawin, Sharon E. Ashbrook, Matthew L. Clarke, Paul A. Wright
JOURNAL OF MATERIALS CHEMISTRY A
(2019)
Article
Chemistry, Physical
Ruben Heimboeckel, Frank Hoffmann, Michael Froeba
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2019)