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On the bonding environment of phosphorus in purified doped single-walled carbon nanotubes

Authors/others:Ruiz Soria, Rosa GeorginaSusi, TomaSauer, MarkusYanagi, Kazuhiro (Tokyo Metropolitan University) Pichler, ThomasAyala, Paola
Abstract:In this work, phosphorous-doped single-walled carbon nanotubes have been synthesized by the thermal decomposition of trimethylphosphine using a high-vacuum chemical vapor deposition method. Furthermore, a modified density-gradient-ultracentrifugation process has been applied to carefully purify our doped material. The combined use of Raman and X-ray photoelectron spectroscopy allowed us to provide the first insight into the bonding environment of P incorporated into the carbon lattice, avoiding competing signals arising from synthesis byproducts. This study represents the first step toward the identification of the bonding configuration of P atoms when direct substitution takes place.
Number of pages:5
Date of publication:1.2015
Journal title:Carbon
Digital Object Identifier (DOI):https://doi.org/10.1016/j.carbon.2014.09.028
Publication Type:Article
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