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Graphdiyne under pressure: A Raman study
- Source :
- Applied Physics Letters. 113:021901
- Publication Year :
- 2018
- Publisher :
- AIP Publishing, 2018.
-
Abstract
- High pressure Raman spectra of graphdiyne (GDY) have been studied up to 34.63 GPa. We found that sp-hybridized carbons in GDY are highly active and start to undergo a bonding change at around 5.2 GPa. Such a bonding change affects the C-C stretching vibration of sp2 hexagon rings in GDY, leading to an anomaly in the corresponding G-band pressure coefficient. A three-dimensional sp2 structure is proposed to form via pressure-induced interlayer cross-linking of sp carbons in GDY and is stable up to at least 34.63 GPa. Our study presents an important example in the study of graphyne family under pressure.
- Subjects :
- Materials science
Physics and Astronomy (miscellaneous)
Graphene
02 engineering and technology
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
Molecular physics
Pressure coefficient
0104 chemical sciences
law.invention
Vibration
Graphyne
symbols.namesake
law
High pressure
symbols
Anomaly (physics)
0210 nano-technology
Raman spectroscopy
Subjects
Details
- ISSN :
- 10773118 and 00036951
- Volume :
- 113
- Database :
- OpenAIRE
- Journal :
- Applied Physics Letters
- Accession number :
- edsair.doi...........ba8e8880a4615750b2b2e33a47996078