| Abstract
| - Detection of a low-sensitivity, high-energy-density material, 1,1-diamino-2,2-dinitroethylene (FOX-7), stabilizedin the pores of MFI-type nanocrystals is demonstrated. Diverse spectroscopic methods, including NMR, Raman,and IR spectroscopies, combined with differential scanning calorimetry (DSC) were applied for the recognitionof the FOX-7 compound under thermal stress. A remarkably higher thermal stability of FOX-7 immobilizedin the channels of MFI nanocrystals was achieved because of the different arrangement and isolation of themolecules inside the MFI-type zeolite. In addition, the confined detection approach demonstrates the possibilityof stabilizing the imine form of FOX-7 in zeolite nanocrystals treated at elevated temperature. A differentexothermal response of the imine form of FOX-7 was observed, which provides further information on thedecomposition path and nature of temperature-treated FOX-7. The confined recognition approach opens newalternatives for the stabilization and detection of sensitive high-energy materials such as primary explosivesand provides a new possibility for the development of safe standards.
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