Toward a Predominant Substitutional Bonding Environment in B-Doped Single-Walled Carbon Nanotubes

Author(s)
Carlos Reinoso, Claudia Berkmann, Lei Shi, Alexis Debut, Kazuhiro Yanagi, Thomas Pichler, Paola Ayala
Abstract

B-doped single-walled carbon nanotubes have been synthesized from sodium tetraphenyl borate and record incorporation percentages of B heteroatoms have been found in this material as-synthesized. However, carbonaceous impurities, besides other byproducts, can still contain boron and therefore exhibit various types of competing bonding environments. To circumvent this issue, which has constantly hindered a conclusive insight to the existing bonding environments in materials alike, we have employed a purification method, which leaves similar to 7% at. of B atoms of the total sample composition almost exclusively in the sp(2) configuration. This record B substitutional doping, together with the identification of the competing bonding environments are revealed here unambiguously from X-ray photoelectron spectroscopy. The doping level in the purified tubes is about an order of magnitude larger than in other B-doped single-walled tubes even without purification, and brings the state-of-the-art closer to the controlled applicability of this material.

Organisation(s)
Electronic Properties of Materials
External organisation(s)
Sun Yat-sen University, Universidad de las Fuerzas Armadas - ESPE, Tokyo Metropolitan University
Journal
ACS Omega
Volume
4
Pages
1941-1946
No. of pages
6
ISSN
2470-1343
DOI
https://doi.org/10.1021/acsomega.8b03031
Publication date
01-2019
Peer reviewed
Yes
Austrian Fields of Science 2012
Materials physics, Spectroscopy
Keywords
Portal url
https://ucris.univie.ac.at/portal/en/publications/toward-a-predominant-substitutional-bonding-environment-in-bdoped-singlewalled-carbon-nanotubes(6e0f86bc-9967-4ed6-af50-56058f335c63).html