Published June 3, 2020
| Version v1
Journal article
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Nitrogen in black phosphorus structure
Creators
- 1. Center for High Pressure Science and Technology Advanced Research
- 2. University of Saskatchewan
- 3. Argonne National Laboratory
- 4. University of Chicago
- 5. Stanford University
Description
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 Ag 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.
Data availability
All data needed to evaluate the conclusions in the paper are present in the paper and/or the Supplementary Materials. Additional data related to this paper may be requested from the authors.Files
sciadv.aba9206.pdf
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Additional details
Identifiers
- DOI
- 10.1126/sciadv.aba9206
- Other
- oai:uchicago.tind.io:10997
Funding
- Natural Sciences and Engineering Research Council of Canada