An Ag(i) energetic metal–organic framework assembled with the energetic combination of furazan and tetrazole: synthesis, structure and energetic performance

Abstract

A novel Ag(I) energetic MOF [Ag₁₆(BTFOF)₉]_n·[2(NH₄)]_n (1) assembled with Ag(I) ions and a furazan derivative, 4,4′-oxybis[3,3′-(1H-5-tetrazol)]furazan (H₂BTFOF) was successfully synthesized and structurally characterized, featuring a three-dimensional porous structure incorporating ammonium cations. The thermal stability and energetic properties were determined, revealing that the 3D energetic MOF had an outstanding insensitivity (IS > 40 J), an ultrahigh detonation pressure (P) of 65.29 GPa and a detonation velocity (D) of 11.81 km cm⁻³. In addition, the self-accelerating decomposition temperature (T_SADT) and the critical temperature of thermal explosion (T_b) are also discussed in detail. The finding exemplifies that the assembly strategy plays a decisive role in the density and energetic properties of MOF-based energetic materials.