An external electric field has great effects on the sensitivity of cocrystal energetic materials. In order to find out the relationship between the external electric field
It has long been a driving force in the development of
energetic
materials to hunt for novel high-energy density materials (HEDMs)
with high energy and good stability. Recently, the noncovalent self-assembly
strategy of energetic anions and cations to generate HEDMs is an effective
strategy for introducing an oxidizer and fuel separately into the
energy system. In this study, bis(1,2,4-triazolyl)triazene containing
triazene (−NNNH−) and oxidant molecules
(i.e., HNO3 and HClO4) were selected as high-energy
ions to develop new high energy materials by using noncovalent self-assembly.
The experimental results showed that three exemplary compounds possess
excellent detonation pressure and detonation velocity (P
C–J: 22.8–29.3 GPa and D: 7425–8135 m s–1), which are comparable
to the classical explosive trinitrotoluene (TNT) (P
C–J: 19.5 GPa and D: 6881 m s–1) as well as 1,3,5-trinitro-1,3,5-triazacyclohexane
(RDX) (P
C–J: 34.9 GPa and D: 8795 m s–1). Moreover, 1 and 3 exhibit low mechanical sensitivities (IS: 40
J and IS: 70 J). Thus, 1 and 3 have great
potential as insensitive energetic materials. Especially, these energetic
assemblies have excellent laser-ignited combustion properties and
can be used as candidates for low sensitivity propellants.
A facile synthetic route to an important intermediate 4-amino-2,6-dichloropyridine was developed. Oxidation of 2,6-dichloropyridine as a starting material gave pyridine
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