The construction and design of pyrotechnics with superior performance is not only a task of great significance but also a tremendous challenge. In this regard, we present the syntheses of novel green primary colors pyrotechnics (red, green, and blue light-generating pyrotechnics) by employing 4-chloro-3,5-dinitropyrazole (CDNP) as a multifunctional raw material. CDNP contains a flame enhancer, oxygen-rich functional group, and nitrogen heterocyclic combustibles, which contribute to the high performance of the pyrotechnics. The characteristic elements (strontium, barium, and copper) that impart color to the flame are combined with the CDNP to synthesize the primary colors pyrotechnics by an “all-in-one” strategy. The structures of three energetic metal salts (EMS-1, EMS-2, and EMS-3) are completely characterized, and their thermal stability, sensitivity, ignition performance, and color purity are systematically evaluated. All EMSs show excellent thermal stability and low mechanical sensitivities (>330 °C, >40 J, >360 N). Moreover, the EMSs demonstrate successful ignition and combustion under laser conditions and roasting test conditions, producing bright characteristic flames. Chromaticity analysis reveals that the three EMSs possess good color purities of 91, 80, and 70%, respectively. Consequently, the three integrated pyrotechnics exhibit exceptional combustion properties, highlighting their potential for use in various pyrotechnic applications.

中文翻译：

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4-氯-3,5-二硝基吡唑金属盐有望用于环保原色烟火

性能优越的烟火的建造和设计不仅是一项意义重大的任务，也是一项巨大的挑战。在这方面，我们提出了采用4-氯-3,5-二硝基吡唑（CDNP）作为多功能原料合成新型绿基色烟火（红、绿、蓝光烟火）。CDNP含有助燃剂、富氧官能团和氮杂环可燃物，有助于烟火的高性能。将赋予火焰颜色的特征元素（锶、钡和铜）与 CDNP 结合，通过“一体化”策略合成原色烟火。三种含能金属盐（EMS-1、EMS-2和EMS-3）的结构得到了完整的表征，并系统地评估了它们的热稳定性、灵敏度、点火性能和色纯度。所有 EMS 均表现出出色的热稳定性和低机械敏感性（>330 °C、>40 J、>360 N）。此外，EMS 在激光条件和烘烤测试条件下证明了成功的点火和燃烧，产生明亮的特征火焰。色度分析表明，三种 EMS 分别具有良好的颜色纯度，分别为 91%、80% 和 70%。因此，这三种集成烟火技术表现出卓越的燃烧特性，凸显了它们在各种烟火应用中的潜力。