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An ammonium perchlorate (AP) and copper(II) benzoate pyrotechnic blue-flame composition was gradually “diluted” by adding an experimental perchlorate-free blue-flame composition based on aminoguanidinium nitrate (AGN), malachite, PVC powder and shellac resin. Flame’s luminous intensity and specific luminous intensity were recorded and analyzed. A copper-aminoguanidinium (CuAG) complex was also synthesized and tested as an energetic additive in perchlorate-free blue-flame composition. Green-flame color was observed when testing chlorine-free energetic compositions with CuAG.

In this research, 10 different pyrotechnic blue flame compositions were designed and compared. Chromaticity and luminosity parameters of the flame were measured using Ocean Optics JAZ‐ULM VIS‐Spectrometer equipped with a cosine corrector. Color saturation, luminous intensity, specific luminous intensity, oxygen balance, burn rate, actual and theoretical maximum density, color coordinates (X, Y) are presented and discussed.

Electrochemically induced luminescence (ECL) is an attractive analytical technique, which could be used for many applications. Introduction of reactants and/or removal of formed products both are very important issues in the most ECL-based systems. The introduction/removal of chemicals could be achieved by flow-through cells. Flow-through cells are not efficient in all designs of ECL systems. Therefore, rotating disk electrode (RDE) could be a valuable alternative, which could increase the efficiency of ECL-based devices. In this work, the RDE was used for the evaluation of electroluminescence of tris(2,2′-bipiridin)dichlorruthenium(II)hexahydrate ([Ru(bpy)3]2+), 5-Amino-2,3-dihydro-1,4-phthalazinedione (luminol), and N-(4-aminobuthyl)-N-ethyl-isoluminol (ABEI). Detection limits, optimal pH and potential values, and emission spectra were determined for each compound.

Copper(I) bromide was evaluated as an alternative emitter for blue flame pyrotechnic compositions. CuBr and CuCl emission spectra were recorded from a butane torch flame and compared. Cu(BrO3 )2 was synthesized and used in pyrotechnic compositions as an oxidizer and the source for the generation of CuBr species. Pyrotechnic compositions, which contained copper and potassium bromates as oxidizers, were optimized for the generation of blue flames. The experimental data, including emission spectra of the flames, chromaticity coordinates, burning rates, luminous intensities, and sensitivity tests, were analyzed and compared.