炸药的安全性通常与能量相互制约。四唑环是已知能够稳定存在氮含量最高的富氮杂环，是极富潜力的高能低感绿色炸药构筑单元。目前，鲜有关于多硝基四唑氮氧化物合成的报道；四唑环的化学惰性致使对其进行多官能化修饰较为困难，这已成为开发高能低感四唑类炸药的主要障碍之一。本项目拟在四唑环骨架上引入富硝基结构的同时对其进行氮氧化，开发具有全新结构的四唑含能分子，并通过离子化策略进一步对其能量与安全性进行可控调节，旨在获得可作为潜在高能低感绿色炸药的四唑含能化合物；着重对此类四唑含能化合物能量及安全性开展研究，探索此类四唑含能化合物结构与性能之间的演变规律。本项目的顺利开展，不仅有望获得四唑类高能低感绿色炸药，而且可为基于四唑骨架含能分子的设计提供新的思路。

In general, energy and safety are two mutually contradictory aspects for most high explosives. The tetrazole framework is the known stable heterocyclic structure with highest nitrogen content, which is thereby considered as a promising building unit for potential insensitive high explosives. Currently, only few studies involving syntheses of multinitro-functionalized tetrazole N-oxides are available, mainly due to the great difficulty in multi-functional modification on the chemically inert tetrazole ring. This project intends to develop novel tetrazole-based high explosives through the strategy of introducing multi-nitro groups and N-oxide into the tetrazole framework. By virtue of forming energetic ionic salts, the energy and safety of those synthesized energetic molecules can be well balanced, thereby achieving the construction of ideal insensitive high explosives. Moreover, energy and safety properties of these tetrazole-based compounds will be particularly studied, in which the intrinsic relationships between structure and property will also be explored. This project will help us obtain some high-performance tetrazole-based high explosives and also provide a new approach to develop new-generation energetic materials.