Design Rules of Hydrogen-Bonded Organic Frameworks with High Chemical and Thermal Stabilities

Journal of the American Chemical Society, Journal Year: 2022, Volume and Issue: 144(24), P. 10663 - 10687

Published: June 8, 2022

Hydrogen-bonded organic frameworks (HOFs), self-assembled from strategically pre-designed molecular tectons with complementary hydrogen-bonding patterns, are rapidly evolving into a novel and important class of porous materials. In addition to their common features shared other functionalized materials constructed modular building blocks, the intrinsically flexible reversible H-bonding connections endow HOFs straightforward purification procedures, high crystallinity, solution processability, recyclability. These unique advantages have attracted considerable attention across broad range fields, including gas adsorption separation, catalysis, chemical sensing, electrical optical However, relatively weak interactions within can potentially limit stability potential use in further applications. To that end, this Perspective highlights recent advances development chemically thermally robust HOF systematically discusses relevant design rules synthesis strategies access highly stable HOFs.

Language: Английский

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Zirconium-based metal-organic frameworks for fluorescent sensing

Coordination Chemistry Reviews, Journal Year: 2022, Volume and Issue: 476, P. 214930 - 214930

Published: Nov. 15, 2022

Language: Английский

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Building a Pyrazole–Benzothiadiazole–Pyrazole Photosensitizer into Metal–Organic Frameworks for Photocatalytic Aerobic Oxidation

Journal of the American Chemical Society, Journal Year: 2021, Volume and Issue: 143(50), P. 21340 - 21349

Published: Dec. 8, 2021

Charge separation plays a crucial role in regulating photochemical properties and therefore warrants consideration designing photocatalysts. Metal-organic frameworks (MOFs) are emerging as promising candidates for heterogeneous photocatalysis due to their structural designability tunability of photon absorption. Herein, we report the design pyrazole-benzothiadiazole-pyrazole organic molecule bearing donor-acceptor-donor conjugated π-system fast charge separation. Further attempts integrate such photosensitizer into MOFs afford more effective photocatalyst (JNU-204). Under visible-light irradiation, three aerobic oxidation reactions involving different oxygenation pathways were achieved on JNU-204. Recycling experiments conducted demonstrate stability reusability JNU-204 robust photocatalyst. Furthermore, illustrate its applications facile synthesis pyrrolo[2,1-a]isoquinoline-containing heterocycles, core skeletons family marine natural products. is an exemplary MOF platform with good absorption, suitable band gap, separation, extraordinary chemical proceeding under irradiation.

Language: Английский

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Catalytic ozone decomposition and adsorptive VOCs removal in bimetallic metal-organic frameworks

Nature Communications, Journal Year: 2022, Volume and Issue: 13(1)

Published: Aug. 25, 2022

Abstract Atmospheric ozone has long been a threat to human health, however, rational design of high-performance O 3 -decomposition catalysts remains challenging. Herein, we demonstrate the great potential series isomorphous bimetallic MOFs denoted as PCN-250(Fe 2 M) (M = Co 2+ , Ni Mn ) in catalytic decomposition. Particularly, Co) showed 100% removal efficiency for continuous air flow containing 1 ppm over wide humidity range (0 ‒ 80% RH) at room temperature. Mechanism studies suggested that high performance originated from introduction open Co(II) sites well its porous structure. Additionally, low pressures around 10 Pa, exhibited adsorption capacities (89 241 mg g −1 most VOCs, which are not only class hazardous pollutants but also precursor . This work opens up new avenue develop advanced purification materials and VOCs one.

Language: Английский

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An overview of metal-organic frameworks and their magnetic composites for the removal of pollutants

Separation and Purification Technology, Journal Year: 2023, Volume and Issue: 320, P. 124144 - 124144

Published: May 24, 2023

As a result of serious pollution in the water environment, sewage disposal has been receiving lot attention from industry. Metal-organic frameworks (MOFs) attract interest adsorption and separation due to their complex structures easily adjustable pore sizes. Magnetic MOFs inheriting advantages both large surface area easy recovery have great potentials pollutants. This paper reviews recent research progress on ions, dyes other contaminants by different types (magnetic non-magnetic MOFs) magnetic composites (Fe3O4@MOF) aqueous environments. The factors affecting pollutants, thermodynamic kinetic effects are discussed with detailed examples. Finally, challenges opportunities for further development elucidated.

Language: Английский

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Photo‐Stimuli‐Responsive Dual‐Emitting Luminescence of a Spiropyran‐Encapsulating Metal–Organic Framework for Dynamic Information Encryption

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(26)

Published: March 9, 2023

The development of photo-stimuli-responsive luminescent materials is essential to address emerging demands in encryption security. Here, a novel dual-emitting material ZJU-128⊃SP (SP = spiropyran) reported, which obtained by encapsulating spiropyran molecules into cadmium-based metal-organic framework (MOF), [Cd3 (TCPP)2 ]·4DMF·4H2 O (ZJU-128, H4 TCPP 2,3,5,6-tetrakis (4-carboxyphenyl)pyrazine). This MOF/dye composite exhibits blue emission from the ligand ZJU-128 at 447 nm and red around 650 spiropyran. Utilizing photoisomerization ring-closed ring-open form under UV-light irradiation, significant fluorescence resonance energy transfer (FRET) process between achieved. As result, gradually decreased while increases. dynamic fluorescent behavior can fully recover original state following exposure visible light (>405 nm). By taking advantage time-dependent fluorescence, dynamical anti-counterfeiting patterns multiplexed coding are successfully developed based on film. work provides an inspiring point for design information with higher security requirements.

Language: Английский

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Recent progress on porous MOFs for process-efficient hydrocarbon separation, luminescent sensing, and information encryption

Chemical Communications, Journal Year: 2021, Volume and Issue: 58(6), P. 747 - 770

Published: Dec. 13, 2021

Metal-organic frameworks (MOFs), as an emerging class of porous materials, excel in designability, regulatability, and modifiability terms their composition, topology, pore size, surface chemistry, thus affording a huge potential for addressing environment energy-related challenges. In particular, MOFs can be applied adsorbents the purification industrially important hydrocarbons through certain process-efficient separation schemes based on selectivity-reversed adsorption multicomponent separation. Moreover, vast combination possibilities controllable engineerable luminescent units make them versatile platform to develop functionally tailored materials sensing optical data encryption. this feature article, we summarize recent progress use acetylene (C2H2) ethylene (C2H4) strategies. highlight advances over past three years field MOF-based thermometry, turn-on sensing, information

Language: Английский

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The stability of MOFs in aqueous solutions—research progress and prospects

Green Chemical Engineering, Journal Year: 2023, Volume and Issue: 5(2), P. 187 - 204

Published: Aug. 1, 2023

Metal-organic frameworks (MOFs) are favored in the fields of adsorption, separation, catalysis, electrochemistry, and magnetism due to their advantages large specific surface area, high porosity, controllable pore size adjustment, dispersion metal active sites. The application MOFs involves multiple fields, which requires that have good water stability, as gaseous liquid inevitably exist industrial processes. In this paper, research status stability aqueous solutions reviewed recent years, including design synthesis, influencing factors, applications stability.

Language: Английский

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Recent progress in metal-organic frameworks (MOFs) for CO2 capture at different pressures

Journal of environmental chemical engineering, Journal Year: 2022, Volume and Issue: 10(6), P. 108930 - 108930

Published: Nov. 6, 2022

Global climate change ensued by the rise in atmospheric CO2 levels is one of greatest challenges our planet facing today. This worldwide distress demands technologies that can contribute to society toward "negative carbon emissions". Carbon capture and storage (CCS) are important role for capturing from existing emission sources, such as industrial energy production point before new more prominent modifications infrastructure be implemented. Recently, alongside source capture, direct air (DAC) processes have emerged highly sought-after able ambient air. Alongside traditional inorganic adsorbents, a class solid porous called metal-organic frameworks (MOFs) recent years also, group potentially very efficient materials CO2. The promising results MOF-based adsorbents already achieved great interest contributed their ever-accelerating research develop even better both DAC recovery technologies. review highlights has been focused on utilizing MOFs processes, particularly targeting applicable low partial pressures but also pure (1 bar) will reviewed, because it widely used test condition characterizing sorption properties MOF adsorbents. Herein, we outline four major approaches, through which adsorption capacity selectivity boosted, including targeted metal centers, pore size control, proper selection substitution linker units, functionalization amines. mechanisms event reviewed perspective physisorption chemisorption phenomena. At end review, briefly examine variables related coordination technical-economical, process-technical, physicochemical researchers engineers should consider when developing with emphasis material processing, capacity, selectivity, regeneration cyclicity, cost.

Language: Английский

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Stable Metal–Organic Frameworks for Fluorescent Detection of Tetracycline Antibiotics

Inorganic Chemistry, Journal Year: 2022, Volume and Issue: 61(20), P. 8015 - 8021

Published: May 11, 2022

The rapid detection of antibiotics in agricultural products is great significance. In this work, two stable fluorescent metal-organic frameworks (MOFs), BUT-178 and BUT-179, are synthesized used to detect tetracycline antibiotics. Among them, BUT-179 exhibits better performance the different water eggs. limits toward tetracycline, aureomycin, oxytetracycline, doxycycline all reach nanomolar level. Furthermore, cycling tests confirm that can be easily recovered repeatedly without an obvious loss. This work demonstrates excellent application potential MOFs for food safety, especially fluorescence foods.

Language: Английский

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