Solvent-free 3D layered energetic metal organic framework: Structure, stability, and its laser response

The design and construction of high-dimension energetic metal organic frameworks (EMOFs) are a promising approach to balance stability and energetic performance. Herein, 3D EMOF [Pb 3 (BTT) 2 ] n (EMOF 1 , H 3 BTT = 4,5-bis(tetrazol-5-yl)-2H-1,2,3-triazole), which achieved integrating high density, excellent stability, and solvent-free, was successfully explored and accurately characterized. Single-crystal X-ray diffraction shows that it is orthorhombic and belongs to Pbca space group. The BTT 3− ligand features a 11-dentate coordination (total 11 nitrogen atoms), which compacts the structure of EMOF 1 , possesses high density (3.344 g·cm −3 ), and exhibits outstanding thermal stability ( T p = 377.8 °C) and mechanical sensitivity ( IS > 40 J, FS = 216 N). Its laser response process is tracked by laser initiation systems. The BTT 3− ligand features a 11-dentate coordination (total 11 nitrogen atoms), which compacts the structure of 3D solvent-free [Pb 3 (BTT) 2 ] n (EMOF 1 , H 3 BTT = 4,5-bis(tetrazol-5-yl)-2H-1,2,3-triazole), possesses high density (3.344 g·cm −3 ), and exhibits outstanding thermal stability ( T p = 377.8 °C) and mechanical sensitivity ( IS > 40 J, FS = 216 N). Its laser response process is tracked by laser initiation systems. • A dense 3D solvent-free EMOF 1 ([Pb 3 (BTT) 2 ] n ) achieved integrating high density and excellent stability. • It possesses high density (3.344 g·cm −3 ), and exhibits outstanding thermal stability ( T p = 377.8 °C) and mechanical sensitivity ( IS > 40 J, FS = 216 N). • The BTT 3− ligand features a novel 11-dentate coordination that all potential coordination sites are involved in coordination with metal centers. • Its moment of laser response was precisely and clearly captured by the high-speed camera.