Acid-Driven Dimensional Regulation Strategy for Synergistically Tuning the Stability and Laser Initiation Performance...

Laser initiation technology exhibits distinctive advantages in environmental adaptability and electromagnetic interference resistance. Nevertheless, the inherent trade-off between initiation performance and safety constitutes the core bottleneck restricting its further development. Herein, employing a nitrogen-rich fused-ring energetic ligand, Ditetrazolo[1,5-a:1', 5'-c]pyrazine (DTP), and Ag+ as the metal node, we propose an acid-driven dimensional regulation strategy to precisely engineer energetic metal-organic frameworks (EMOFs), thereby achieving the synergistic optimization of safety and initiation performance for laser-initiating explosives, and afford two EMOFs, namely 2D [Ag2(DTP)(NO3)2]n (EMOF-1) and 1D [Ag(DTP)(NO3)]n (EMOF-2). Performance evaluations reveal that EMOF-1 displays superior energy density, thermal stability (Td = 200 °C), mechanical sensitivity (IS = 4.5 J, FS = 80 N), and oxygen balance relative to EMOF-2. Furthermore, both materials exhibit exceptional near-infrared laser initiation capability, enabling rapid detonation (t ≤ 2 ms) under 980 nm laser irradiation, with EMOF-1 demonstrating a more pronounced deflagration-to-detonation transition (DDT). Consequently, the acid-driven dimensional regulation strategy enables the simultaneous manipulation of structural dimensionality and the effective enhancement of energetic properties and safety in EMOFs. This approach is promising for decoupling the conflict between safety and initiation performance in laser-initiating explosives, offering an effective route for the development of laser initiators with outstanding comprehensive performance.