Enforced Layer-by-Layer Stacking of Energetic Salts towards High-Performance Insensitive Energetic Materials

Development
of modern high-performance insensitive energetic materials
is significant because of the increasing demands for both military
and civilian applications. Here we propose a rapid and facile strategy
called the “layer hydrogen bonding pairing approach”
to organize energetic molecules via layer-by-layer stacking, which
grants access to tunable energetic materials with targeted properties.
Using this strategy, an unusual energetic salt, hydroxylammonium 4-amino-furazan-3-yl-tetrazol-1-olate,
with good detonation performances and excellent sensitivities, was
designed, synthesized, and fully characterized. In addition, the expected
unique layer-by-layer structure with a high crystal packing coefficient
was confirmed by single-crystal X-ray crystallography. Calculations
indicate that the layer-stacking structure of this material can absorb
the mechanical stimuli-induced kinetic energy by converting it to
layer sliding, which results in low sensitivity.