Characterization and Energetic Performance Properties of New Energetic Co-crystals formed between 2, 4, 6-Trinitrophenol, Trinitrotoluene and 1-Bromopyrene

A 1:1 co-crystals of Picric Acid with 1-Bromopyrene and TNT with 1-Bromopyrene were prepared by a solvent evaporation method, and the structure of the co-crystals were determined by single-crystal and powder X-ray diffraction, Mass spectrometry, Infrared spectroscopy techniques. The diffraction data analysis revealed that the co-crystals are primarily formed through donor-acceptor π…π stacking interactions. The TNT:1-Bromopyrene and Picric Acid:1-Bromopyrene co-crystals indicates significantly reduced impact sensitivity relative to pure TNT, Picric Acid. A detailed study of the cocrystals formed reveals a modification of crucial properties including density, oxygen balance, melting point, decomposition temperature detonation performance (velocity, pressure). The acquired results highlight that co-crystallization provides the newly discovered energetic material with attractive properties, and is an effective way to alter existing energetic material