Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 58, Issue 51, Pages 18399-18404Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201908690
Keywords
co-crystals; energetic materials; fuel; hypergolicity; supramolecular systems
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Funding
- Air Force Office of Scientific Research [FA9550-14-1-0306]
- Canada Excellence Research Chairs Program
- NSERC [RGPIN-2017-06467, NSERC SMSFU 507347-17]
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We demonstrate a co-crystal-based strategy to create new solid hypergols, that is, materials exhibiting spontaneous ignition when in contact with an oxidant, from typically non-hypergolic fuel molecules. In these materials, the energy content and density can be changed without affecting the ignition delay. The use of an imidazole-substituted decaborane as a hypergolic trigger component in combination with energy-rich but non-hypergolic nitrobenzene or pyrazine yielded hypergolic co-crystals that combine improved combustion properties with ultrashort ignition delays as low as 1 ms.
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