A new sensitive structural motif inlaying the azides and tetrazole-based rigid 3D energetic MOFs: Highly sensitive primary explosives with excellent thermal stability

Facile synthesis and superior properties of a nitrogen-rich energetic Zn-MOF with a 2D azide-bridged bilayer structure

“…For the synthesis of azide-containing EMOFs, NaN 3 is usually chosen as the indispensable reactant, 39–41 which causes potential safety hazards because NaN 3 is a highly sensitive compound. As all materials used in our synthesis do not contain any azide groups, the mechanism of forming the azide group in [Zn 2 (atz) 3 (N 3 )] n is particularly attractive.…”

“…However, as a matter of fact, many azide-containing EMOFs are highly sensitive. 39–41 The detailed explanation for the insensitivity of [Zn 2 (atz) 3 (N 3 )] n might contain two aspects. On the one hand, in [Zn 2 (atz) 3 (N 3 )] n , the azide ligands only account for 1/4 of all ligands.…”

Sensitive structural motifs separately distributed in azide-based 3D EMOFs: a primary explosive with an excellent initiation ability and enhanced stability

“…However, the thermal stability of Cu-MTZ is only 148 °C and the internal mechanism behind the mechanical sensitivity being lower than those of CA has not yet been revealed. 28 In recent years, our group reported high-energy azide-based EMOFs that revealed several sensitive structural motifs (key structural components affecting the mechanical sensitivities of energetic materials), such as Cu-TZ ([Cu(N 3 )(tz)] n , Htz = tetrazole), 34 Co-ATRZ ([Co(N 3 ) 2 (atrz)] n , atrz = 4,4′-azo-1,2,4-triazole), 35 and Co-BTZE ([Co(N 3 ) 2 (btze)] n , and btze = 1,2-bis(tetrazol-1-yl)ethane). 36 Despite these improvements, primary explosives still retain a balance among an excellent initiation capability, high thermal stabilities, and adequate sensitivities.…”

Synthesis and characterization of thermally stable energetic complexes with 3,5-diaminopyrazolone-4-oxime as a nitrogen-rich ligand

“…17–24 Their unique molecular structures and modifiable functions enable them to have high density, remarkable detonation performance, and good thermal stability. 25,26…”