Journal
ADVANCED THEORY AND SIMULATIONS
Volume 4, Issue 5, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adts.202100022
Keywords
cyclo[18]carbon; density functional theory; graphene
Categories
Funding
- NSAF [U1930402]
- National Natural Science Foundation of China [11874081]
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The recent observation of cyclo[18]carbon by atomic force microscopy has sparked wide interest, with studies focusing on its electronic structures, adsorption properties, and interaction with graphene. Despite some researchers' incorrect structure calculations, accurate calculations for the system are still necessary to ensure large adsorption energy and graphene's potential for isolating C-18 molecules.
The recent observation of cyclo[18]carbon by atomic force microscopy has attracted wide interest. Its electronic structures, adsorption of small molecules, pi-pi stacking interaction, and doping properties have been studied by theoretical calculations. Interaction of cyclo[18]carbon with another allotrope graphene will be worthwhile for understanding weak interaction. Some researchers have performed the adsorption energy calculations of the carbon ring on graphene but obtained an incorrect structure. Therefore, accurate calculations for the system are still necessary. In the work, the system is optimized with periodic and nonperiodic methods. Additionally, several wavefunction analyses and molecular dynamics simulations are also performed for the system. Large adsorption energy is ensured, and graphene can be used to isolate C-18 molecules.
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