Energetic Metal-Organic Frameworks Incorporating NH 3 OH + for New High-Energy-Density Materials
Energetic metal-organic frameworks (E-MOFs) have witnessed increasing development over the past several years. However, as a highly energetic cation, NH OH has never been explored to construct transition-metal-based E-MOFs. Herein, we report the first examples of NH OH -containing E-MOFs with bis(te...
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Veröffentlicht in: | Inorganic chemistry 2019-09, Vol.58 (18), p.12228-12233 |
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Hauptverfasser: | , , , , |
Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | Energetic metal-organic frameworks (E-MOFs) have witnessed increasing development over the past several years. However, as a highly energetic cation, NH
OH
has never been explored to construct transition-metal-based E-MOFs. Herein, we report the first examples of NH
OH
-containing E-MOFs with bis(tetrazole)methane (H
btm) as a ligand and copper and manganese as central metal ions, [(NH
OH)
(Cu(btm)
)]
and [(NH
OH)
(Mn(btm)
)]
. Crystal structure determinations reveal that both E-MOFs show two-dimensional layered structures. Experimental results suggest that they have high thermal decomposition temperatures (>200 °C). Among them, Cu-based E-MOFs possesses outstanding thermal stability (
= 230.3 °C), which surpasses those of known NH
OH
-containing compounds. They also have high energy density; in particular, the Cu-based E-MOF affords a high heat of combustion (11447 kJ kg
) and high heat of detonation (713.8 kJ mol
) beyond the most powerful organic explosives in use today. Additionally, the two E-MOFs show completely different sensitivity properties: the Mn-based E-MOF is an insensitive high-energy-density material (IS > 40 J; FS > 360 N; EDS > 20 J), while the Cu-based E-MOF can be classified as a sensitive energetic material (IS = 13 J; FS = 216 N; EDS = 10.25 J), demonstrating their diverse applications in different fields. Our research proposes a unique class of high-energy-density materials. |
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ISSN: | 0020-1669 1520-510X |
DOI: | 10.1021/acs.inorgchem.9b01636 |