Open AccessJournal Article
Chemical unzipping of WS2 nanotubes
C. Nethravathi,A. Anto Jeffery,Michael Rajamathi,Naoyuki Kawamoto,Reshef Tenne,Dmitri Golberg,Yoshio Bando +6 more
TLDR
In this paper, WS2 nanoribbons were synthesized by chemical unzipping of WS2 nano-tubes. But they are not suitable for use in the manufacturing process.Abstract:
WS2 nanoribbons have been synthesized by chemical unzipping of WS2 nanotubes. Lithium atoms are intercalated in WS2 nanotubes by a solvothermal reaction with n-butyllithium in hexane. The lithiated WS2 nanotubes are then reacted with various solvents--water, ethanol, and long chain thiols. While the tubes break into pieces when treated with water and ethanol, they unzip through longitudinal cutting along the axes to yield nanoribbons when treated with long chain thiols, 1-octanethiol and 1-dodecanethiol. The slow diffusion of the long chain thiols reduces the aggression of the reaction, leading to controlled opening of the tubes.read more
Citations
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Structural phase transitions in two-dimensional Mo- and W-dichalcogenide monolayers.
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References
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Chemically Derived, Ultrasmooth Graphene Nanoribbon Semiconductors
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TL;DR: The authors' ab initio calculations show that the origin of energy gaps for GNRs with armchair shaped edges arises from both quantum confinement and the crucial effect of the edges, which differs from the results of simple tight-binding calculations or solutions of the Dirac's equation based on them.
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TL;DR: It is found that a non-negligible edge state survives even in graphene ribbons with less developed zigzag edges, when the system size is on a nanometer scale.