Engineering highly reactive nanoarray based on tetrazole-triazole coordination polymer and ammonium perchlorate for advanced energetic microchips

The energetic microchips can be obtained through the integration of energetic materials into microelectromechanical systems (MEMS). Herein, a novel MEMS-compatible energetic composite Cutztr@AP has been prepared by using an in-situ approach. The recrystallized ammonium perchlorate (AP) is uniformly confined within the voids among the Cutztr₂₄ nanorod arrays, resulting in a close contact between Cutztr₂₄ and AP. This structure may effectively improve the mass transfer between the oxidizer and the fuels, thereby enhancing the reactivity. Morphological analysis reveals a uniform distribution of AP within the Cutztr@AP_12.5 structure. Consequently, the heat release obtained from non-isothermal decomposition of Cutztr@AP_12.5 is 1628 J/g, surpassing the independent heat release from Cutztr₂₄ and AP combined. Benefiting from the enhanced reactivity of Cutztr@AP_12.5, a significantly shorter flame duration (190 ms) was obtained with a larger luminous radiation area exceeding 2.5 cm² comparison to Cutztr₂₄, which has a flame duration of 673 ms with a luminous radiation area of around 1.0 cm². More importantly, integrating Cutztr@AP_12.5 into the energetic microchip reduces the ignition energy to approximately 19.0 mJ, as compared to 25.9 mJ for pure Cutztr₂₄. This study offers a unique method for constructing high-performance energetic microchips. © 2024 Elsevier B.V.