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Nitrogen in black phosphorus structure
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DOI：10.1126/sciadv.aba9206.png)
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摘要
En 中文
Group V elements in crystal structure isostructural to black phosphorus with unique puckered two-dimensional layers exhibit exciting physical and chemical phenomena. However, as the first element of group V, nitrogen has never been found in the black phosphorus structure. Here, we report the synthesis of the black phosphorus-structured nitrogen at 146 GPa and 2200 K. Metastable black phosphorus-structured nitrogen was retained after quenching it to room temperature under compression and characterized in situ during decompression to 48 GPa, using synchrotron x-ray diffraction and Raman spectroscopy. We show that the original molecular nitrogen is transformed into extended single-bonded structure through gauche and trans conformations. Raman spectroscopy shows that black phosphorus-structured nitrogen is strongly anisotropic and exhibits high Raman intensities in two A(g) normal modes. Synthesis of black phosphorus-structured nitrogen provides a firm base for exploring new type of high-energy-density nitrogen and a new direction of two-dimensional nitrogen.
Keyword:
X-RAY-DIFFRACTION
EQUATION-OF-STATE
PHASE
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期刊
IF:
12.5
论文数:
2.1W
被引数:
18.1W
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引用论文
2D Monoelemental Arsenene, Antimonene, and Bismuthene: Beyond Black Phosphorus2D单元素砷烯，锑烯和铋烯: 超越黑磷.png)
ADVANCED MATERIALS
ADVANCED MATERIALSIF26.8
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