一种合成立方 gauche 型聚合氮的简便方法
A facile route to synthesize cubic gauche polymeric nitrogen
AI总结：
本研究首次通过仅热驱动的化学路线在常压下合成了含N-N单键的cg-N，其特征拉曼峰证实双键转单键，该简便路线为聚合氮基高能量密度材料规模化奠定基础。
摘要：
本研究首次通过仅热驱动的化学路线在常压条件下合成了长期以来备受关注的、含N-N单键的cg-N。cg-N的成功合成首先通过制备叠氮化物溶液实现，随后将该溶液在真空条件下预处理。预处理后，所得浓缩叠氮化物在260°C至330°C温度范围内加热3小时，最终形成cg-N。新出现的cg-N特征强拉曼峰为氮氮双键转化为单键形式提供了确凿证据，这与cg-N结构高度一致。迄今为止，这是唯一在常压下通过简便路线合成一定量cg-N的研究，该路线可进一步发展用于聚合氮基材料作为高能量密度材料的规模化合成与应用。
英文摘要：
In this work, the long-sought cg-N with N-N single bond has been synthesized for the first time by a thermal-driven-only chemical route at ambient conditions. The successful synthesis of cg-N was achieved by first creating a solution of azides, which was then pretreated under vacuum conditions. Following the pretreatment, the resultant concentrated azide was heated at temperatures ranging from 260°C to 330°C for a reaction time of 3 hours, ultimately leading to the formation of cg-N. The emergent intense Raman peak characterized of cg-N provides solid evidence that the double bonded nitrogen-nitrogen transforms into a single bond form, which agrees well with cg-N structure. To date, this is the only work achieving the quantity of cg-N synthesized at ambient conditions by a facile route that can be further developed for the scalable synthesis and applications of polymerized nitrogen-based materials as high energy density materials.
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