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Laser Initiation of Tris(carbohydrazide)metal(II) Perchlorates and Bis(carbohydrazide)diperchlorato‐copper(II)
Author(s) -
Joas Manuel,
Klapötke Thomas M.
Publication year - 2015
Publication title -
propellants, explosives, pyrotechnics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.56
H-Index - 65
eISSN - 1521-4087
pISSN - 0721-3115
DOI - 10.1002/prep.201400142
Subject(s) - carbohydrazide , irradiation , copper , chemistry , metal , thermal decomposition , nuclear chemistry , photochemistry , materials science , medicinal chemistry , organic chemistry , physics , nuclear physics
The literature‐known tris(carbohydrazide)metal(II) perchlorates [ M (CHZ) 3 ](ClO 4 ) 2 ( M Mg 2+ ( 1 ), Mn 2+ ( 2 ), Co 2+ ( 3 ), Ni 2+ ( 4 ), and Zn 2+ ( 5 )) and the bis(carbohydrazide)diperchloratocopper(II) ( 6 ) were prepared and characterized by elemental analysis, IR and Vis/NIR spectroscopy. The sensitivities toward mechanical, thermal, and electrical stimuli were determined for all complexes 1 – 6 . Following, confined samples of 1 – 6 were irradiated with a monopulsed laser beam at a wavelength of 940 nm. The function times between beginning irradiation and complete decomposition (“breakout” at the end of the device) were measured. Further, the influence of light‐absorbing additives was investigated to proof if the laser initiation mechanism might be photothermal or photochemical. Addition of 1 % active carbon to the samples decreased the function time and the correlated initiation threshold enormously. This was an indication that the initiation mechanism seems to be thermal.