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The Gradient Energetic Modification Method to Optimize the Balance between Energy and Thermal Stability of
Jing Liu1, Xiangyu Niu1, Jie Tang1
1School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Xiaolingwei 200, Nanjing 210094, P. R. China.
Organic Letters
|July 10, 2026
Summary
A new gradient energetic modification method enhances detonation performance by sequentially altering nitrogen-rich heterocycles. This approach optimizes energy-stability balance, yielding improved explosives with acceptable thermal stability.
Area of Science:
- Energetic materials science
- Organic synthesis
- Chemical engineering
Background:
- Developing high-performance energetic materials is crucial for various applications.
- Balancing energy output with thermal stability remains a significant challenge in energetic materials research.
- Nitrogen-rich fused heterocycles offer a promising scaffold for novel energetic compounds.
Purpose of the Study:
- To develop a systematic method for modulating the energy-stability balance in energetic materials.
- To synthesize and characterize a series of novel energetic compounds derived from a nitrogen-rich fused heterocycle precursor.
- To evaluate the impact of sequential structural modifications on detonation performance and thermal stability.
Main Methods:
- A gradient energetic modification strategy involving sequential salt formation, oxidation, and nitration reactions.
- Synthesis of a nitrogen-rich fused heterocycle precursor (compound 3).
- Characterization of the synthesized perchlorate salt (compound 4), nitro compound (compound 5), and nitramine compound (compound 6).
- Measurement of detonation velocity and thermal decomposition temperature for the synthesized compounds.
Main Results:
- A stepwise increase in detonation velocity from 7968 m/s to 8533 m/s was achieved through sequential modifications.
- A corresponding decrease in thermal decomposition temperature from 190.3 °C to 181.7 °C was observed.
- Compound 6 demonstrated significantly enhanced detonation performance while maintaining acceptable thermal stability.
Conclusions:
- The gradient energetic modification method effectively balances enhanced detonation performance with retained structural stability.
- Sequential structural modifications of nitrogen-rich heterocycles can systematically tune energetic properties.
- The developed method provides a viable pathway for designing advanced energetic materials with improved performance characteristics.
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