Taming nitroformate through encapsulation with nitrogen-rich hydrogen-bonded organic frameworks.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 33837215.
- Also identified by DOI 10.1038/s41467-021-22475-8 and PMC identifier 8035193.
- Licence recorded as CC BY.
- The licence permits redistribution, so the abstract is shown in full and the full text is available from the publisher.
Abstract
Owing to its simple preparation and high oxygen content, nitroformate [<sup>-</sup>C(NO<sub>2</sub>)<sub>3</sub>, NF] is an extremely attractive oxidant component for propellants and explosives. However, the poor thermostability of NF-based derivatives has been an unconquerable barrier for more than 150 years, thus hindering its application. In this study, the first example of a nitrogen-rich hydrogen-bonded organic framework (HOF-NF) is designed and constructed through self-assembly in energetic materials, in which NF anions are trapped in pores of the resulting framework via the dual force of ionic and hydrogen bonds from the strengthened framework. These factors lead to the decomposition temperature of the resulting HOF-NF moiety being 200 °C, which exceeds the challenge of thermal stability over 180 °C for the first time among NF-based compounds. A large number of NF-based compounds with high stabilities and excellent properties can be designed and synthesized on the basis of this work.