title: Chemical unzipping of WS2 nanotubes.
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.
authors.affiliation: World Premier International Center for Materials Nanoarchitectonics, National Institute for Materials Science, Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan.
authors.forename: C
authors.initials: C
authors.lastname: Nethravathi
authors.forename: A Anto
authors.initials: AA
authors.lastname: Jeffery
authors.forename: Michael
authors.initials: M
authors.lastname: Rajamathi
authors.forename: Naoyuki
authors.initials: N
authors.lastname: Kawamoto
authors.forename: Reshef
authors.initials: R
authors.lastname: Tenne
authors.forename: Dmitri
authors.initials: D
authors.lastname: Golberg
authors.forename: Yoshio
authors.initials: Y
authors.lastname: Bando