Tuning the Energetic Performance of CL-20 by Surface Modification Using Tannic Acid and Energetic Coordination Polymers

ACS Omega, Год журнала: 2022, Номер 7(12), С. 10469 - 10475

Опубликована: Март 16, 2022

The energetic performance of hexanitrohexaazaisowurtzitane (CL-20) was modulated with two coordination polymers (ECPs), [Cu(ANQ)2(NO3)2] and [Ni(CHZ)3](ClO4)2, in this study by a two-step method. First, tannic acid polymerized situ on the surface CL-20 crystals. Then, [Ni(CHZ)3](ClO4)2 were hydrothermally formed CL-20/TA, respectively. Explosion tests show that impact sensitivity coated structure CL-20/TA/[Cu(ANQ)2(NO3)2] is 58% less than no energy decrease. On other hand, CL-20/TA/[Ni(CHZ)3](ClO4)2 can be initiated low laser 107.3 mJ (Nd:YAG, 1064 nm, 6.5 ns pulse width), whereas cannot even 4000 energy. This shows it feasible to modify introducing CPs certain properties, like high insensitive, laser-sensitive, etc., which could prospective method for designing insensitive materials future.

Язык: Английский

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Energetic isostructural metal imidazolate frameworks with a bridging dicyanamide linker towards high-performance hypergolic fuels

Inorganic Chemistry Frontiers, Год журнала: 2023, Номер 10(18), С. 5468 - 5474

Опубликована: Янв. 1, 2023

High energy anions N(CN) 2 − were successfully introduced into two isostructural HMOFs by molecular design toward enhanced hypergolicity.

Язык: Английский

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Hybridization of Dinitramide and Dicyanamide: Evaluation of Nitrocyanamide in Energetic Salts and Coordination Compounds

Crystal Growth & Design, Год журнала: 2021, Номер 22(1), С. 200 - 212

Опубликована: Ноя. 23, 2021

In this work, the anion nitrocyanamide (NCA–), as a cross between dinitramide and dicyanamide anion, was investigated building block in various energetic materials. Apart from nonenergetic complexes, only use ionic liquids has been so far. Consequently, focus work on synthesis of coordination compounds (ECC) involving tetrazole ligands well nitrogen-rich salts, which includes not ammonium but also hydrazinium, hydroxylammonium, triaminoguanidinium. During formation particular put possible adducts with nitrogen bases. This proven help IR NMR spectroscopy. The complexation resulted two silver(I) nine copper(II) were studied terms their geometries properties. Each compound checked purity using CHNO elemental analysis. some cases, X-ray diffraction experiments carried out to become clear about final composition. Thermal stability measurements differential thermal analysis (DTA) and, for selected substances, thermogravimetric (TGA). sensitivities toward impact friction determined according BAM (Bundesanstalt für Materialforschung -prüfung) standard methods, together regarding sensitivity electrostatic discharge. Hot plate hot needle tests conducted every metal salt complex, whereas detonation parameters calculated EXPLO5 code.

Язык: Английский

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Coordination-Induced NIR Photothermal Conversion and Laser Detonation Based on a Quasi-Diamond Interpenetrated Structure

Crystal Growth & Design, Год журнала: 2023, Номер 23(2), С. 1211 - 1218

Опубликована: Янв. 9, 2023

In this work, a copper-based coordination polymer of [Cu3(dhba)2(OH)2(H2O)4] (Cu-dhba, H2dhba = 3,5-dinitro-4-hydroxybenzoic acid) has been constructed by the crystal-engineering approach, featuring three-dimensional quasi-diamond interpenetrated structure. Impressively, due to introduction d–d transition Cu2+ ion, Cu-dhba shows broad absorption band with maximum centered at NIR section. As result, exhibits remarkable photothermal conversion performance under 808 nm light; temperature sample surface could be increased up 115 °C within seconds. Benefiting from its high structure density and abundant hydrogen-bonding interactions, no obvious decay after several cycling experiments. Moreover, energetic nitro groups periodically confined in structure, drastic explosion laser irradiation, making promising laser-responsive material.

Язык: Английский

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The Versatility of the Dicyanamide Anion (Dca) as a Bridging Ligand: Synthesis, Structure and Theory of a Unique Ladder Chain Consisting of 2 µ1,5-dca Bridged Dinuclear Cu2(dca)2 Units with Additional µ1,3-dca Bridges Along the Chain

Journal of Chemical Crystallography, Год журнала: 2024, Номер unknown

Опубликована: Сен. 9, 2024

Язык: Английский

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NIR light-driven deflagration of energetic copper complexes through photothermal effect

CrystEngComm, Год журнала: 2022, Номер 24(42), С. 7493 - 7499

Опубликована: Янв. 1, 2022

Energetic coordination complexes constructed from non-explosive and stable nitro bearing ligands Cu 2+ have been presented, are laser-ignitable on the basis of coordination-induced photothermal conversion.

Язык: Английский

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Synthesis, crystal structures, spectral, magnetic and thermal properties of 1-D polymeric dicyanamido-metal(II) complexes

Polyhedron, Год журнала: 2021, Номер 204, С. 115263 - 115263

Опубликована: Май 14, 2021

Язык: Английский

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