Linker functionalized metal-organic frameworks

Coordination Chemistry Reviews, Journal Year: 2019, Volume and Issue: 399, P. 213023 - 213023

Published: Sept. 4, 2019

Language: Английский

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Potassium 4,4′‐Bis(dinitromethyl)‐3,3′‐azofurazanate: A Highly Energetic 3D Metal–Organic Framework as a Promising Primary Explosive

Angewandte Chemie International Edition, Journal Year: 2016, Volume and Issue: 55(18), P. 5565 - 5567

Published: March 23, 2016

Abstract Environmentally acceptable alternatives to toxic lead‐based primary explosives are becoming increasingly important for energetic materials. In this study, potassium 4,4′‐bis(dinitromethyl)‐3,3′‐azofurazanate, comprising two dinitromethyl groups and an azofurazan moiety, was synthesized isolated as a new 3D metal–organic framework (MOF). Several attractive properties, including density of 2.039 g cm −3 , decomposition temperature 229 °C, detonation velocity 8138 m s −1 pressure 30.1 GPa, impact sensitivity 2 J, friction 20 N make 4 good candidate green explosive.

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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Explosives in the Cage: Metal–Organic Frameworks for High‐Energy Materials Sensing and Desensitization

Advanced Materials, Journal Year: 2017, Volume and Issue: 29(36)

Published: July 21, 2017

An overview of the current status coordination polymers and metal-organic frameworks (MOFs) pertaining to field energetic materials is provided. The explosive applications MOFs are discussed from two aspects: one for detection explosives, other desensitization. By virtue their adjustable pore/cage sizes, high surface area, tunable functional sites, rich host-guest chemistry, have emerged as promising candidates both sensing challenges perspectives in these areas thoroughly discussed, processing methods practical also briefly.

Language: Английский

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Time for pairing: cocrystals as advanced energetic materials

CrystEngComm, Journal Year: 2016, Volume and Issue: 18(33), P. 6124 - 6133

Published: Jan. 1, 2016

Energetic materials that can store and rapidly release large amounts of chemical energy on demand play a vital role in both military civilian fields. Modern energetic should have high density, heat formation possess molecular stability allow them to be manufactured, stored handled safely. Recently, cocrystallization technology offers promising platform for achieve desired balance between detonation performance low sensitivity. This paper highlights recent developments cocrystals details intermolecular interactions, physical parameters properties. The major part the discussion relates different types including composed molecules solvents, 2,4,6,8,10,12-hexanitrohexaazaisowurtzitane (CL-20)-based azole-based cocrystals, et al. In addition, resonant acoustic mixing (RAM) technique, bead milling spray flash evaporation technique are also introduced as means large-scale production nanosized cocrystals.

Language: Английский

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3,6‐Dinitropyrazolo[4,3‐c]pyrazole‐Based Multipurpose Energetic Materials through Versatile N‐Functionalization Strategies

Angewandte Chemie International Edition, Journal Year: 2016, Volume and Issue: 55(41), P. 12895 - 12897

Published: Sept. 15, 2016

Abstract A family of 3,6‐dinitropyrazolo[4,3‐c]pyrazole‐based energetic compounds was synthesized by using versatile N ‐functionalization strategies. Subsequently, nine ionic derivatives the , N′ ‐(3,6‐dinitropyrazolo[4,3‐c]pyrazole‐1,4‐diyl)dinitramidate anion were prepared acid‐base reactions and fully characterized infrared, multinuclear NMR spectra, elemental analysis. The structures four these further confirmed single‐crystal X‐ray diffraction. Based on their different physical detonation properties, exhibit promising potential as modern materials can be variously classified green primary explosives, high‐performance secondary fuel‐rich propellants, propellant oxidizers.

Language: Английский

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Coordination Polymerization of Metal Azides and Powerful Nitrogen-Rich Ligand toward Primary Explosives with Excellent Energetic Performances

Chemistry of Materials, Journal Year: 2017, Volume and Issue: 29(22), P. 9725 - 9733

Published: Nov. 3, 2017

Advancement in explosive systems toward miniaturization and enhanced safety has prompted the development of primary explosives with powerful detonation performance relatively low sensitivities. Energetic coordination polymers (ECPs) as a new type energetic materials have attracted wide attention. However, regulating characters ECPs establishing relationship between structure property remains great challenges. In this study, two isomorphic 2D π-stacked solvent-free polymers, [M(N3)2(atrz)]n (M = Co 1, Cd 2; atrz 4,4′-azo-1,2,4-triazole), were hydrothermally prepared structurally characterized by X-ray diffraction. The compounds exhibit reliable stabilities, remarkable positive enthalpies formation, prominent heats detonation. enthalpy formation 1 is 4.21 kJ·g–1, which higher than those all hitherto known explosives. Repulsive steric clashes sensitive azide ions 2 influence mechanical sensitivities deduced from calculated noncovalent interaction domains. can serve candidates for an approved level safety.

Language: Английский

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New form of high energy primary explosive: Dual structure composed of ionic salt-based coordination polymers

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 457, P. 141267 - 141267

Published: Jan. 2, 2023

Language: Английский

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Self-assembled energetic 3D metal–organic framework [Na₈(N₅)₈(H₂O)₃]_n based on cyclo-N₅^–

Dalton Transactions, Journal Year: 2017, Volume and Issue: 47(5), P. 1398 - 1401

Published: Dec. 29, 2017

From a 1D sodium-N5- framework, new zeolite-like metal-organic framework (MOF) with fascinating 3D structure was successfully constructed. It exhibited an enhanced thermal stability decomposition temperature (onset) of 129 °C and coordination ability (five-coordination) cyclo-N5- in weak alkaline conditions. The MOF bulky size offers opportunities not only for the formation porous materials but also to control balance between performance polynitrogen materials.

Language: Английский

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5-(Dinitromethyl)-3-(trinitromethyl)-1,2,4-triazole and its derivatives: a new application of oxidative nitration towards gem-trinitro-based energetic materials

Journal of Materials Chemistry A, Journal Year: 2017, Volume and Issue: 5(10), P. 4785 - 4790

Published: Jan. 1, 2017

A family of 5-(dinitromethyl)-3-(trinitromethyl)-1,2,4-triazole and its derivatives was prepared using a new application oxidative nitration with gem-trinitro-based energetics. These compounds show promise for future energetic materials.

Language: Английский

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