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Structural properties of carbon nanotubes derived from 13C NMR

We present a detailed experimental and theoretical study on how structural properties of carbon nanotubes can be derived from 13C NMR investigations. Magic angle spinning solid state NMR experiments have been performed on single- and multiwalled carbon nanotubes with diameters in the range from 0....

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Main Authors: Abou-Hamad, Edy, Babaa, Moualy Rachid, Bouhrara, Mohamed, Kim, Y, Saih, Youssef, Dennler, Samuel, Mauri, Fabrizio, Basset, Jean-Marie, Goze-Bac, Christophe, Wagberg, Thomas
Format: Article
Published: American Physical Society 2011
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QC Physics
Online Access:http://eprints.utp.edu.my/6675/1/Babaa_edy_PRB2011.pdf
http://prb.aps.org/
http://eprints.utp.edu.my/6675/
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spelling my.utp.eprints.66752017-01-19T08:23:04Z Structural properties of carbon nanotubes derived from 13C NMR Abou-Hamad, Edy Babaa, Moualy Rachid Bouhrara, Mohamed Kim, Y Saih, Youssef Dennler, Samuel Mauri, Fabrizio Basset, Jean-Marie Goze-Bac, Christophe Wagberg, Thomas QC Physics We present a detailed experimental and theoretical study on how structural properties of carbon nanotubes can be derived from 13C NMR investigations. Magic angle spinning solid state NMR experiments have been performed on single- and multiwalled carbon nanotubes with diameters in the range from 0.7 to 100 nm and with number of walls from 1 to 90. We provide models on how diameter and the number of nanotube walls influence NMR linewidth and line position. Both models are supported by theoretical calculations. Increasing the diameter D, from the smallest investigated nanotube, which in our study corresponds to the inner nanotube of a double-walled tube to the largest studied diameter, corresponding to large multiwalled nanotubes, leads to a 23.5 ppm diamagnetic shift of the isotropic NMR line position δ. We show that the isotropic line follows the relation δ = 18.3/D + 102.5 ppm, where D is the diameter of the tube and NMR line position δ is relative to tetramethylsilane. The relation asymptotically tends to approach the line position expected in graphene. A characteristic broadening of the line shape is observed with the increasing number of walls. This feature can be rationalized by an isotropic shift distribution originating from different diamagnetic shielding of the encapsulated nanotubes together with a heterogeneity of the samples. Based on our results, NMR is shown to be a nondestructive spectroscopic method that can be used as a complementary method to, for example, transmission electron microscopy to obtain structural information for carbon nanotubes, especially bulk samples. American Physical Society 2011 Article PeerReviewed application/pdf http://eprints.utp.edu.my/6675/1/Babaa_edy_PRB2011.pdf http://prb.aps.org/ Abou-Hamad, Edy and Babaa, Moualy Rachid and Bouhrara, Mohamed and Kim, Y and Saih, Youssef and Dennler, Samuel and Mauri, Fabrizio and Basset, Jean-Marie and Goze-Bac, Christophe and Wagberg, Thomas (2011) Structural properties of carbon nanotubes derived from 13C NMR. PHYSICAL REVIEW B (Impact Factor: 3.772), 84 . 165417-1-165417-6. ISSN 1098-0121 (print) 1550-235X (online) 1538-4489 (CD-Rom) http://eprints.utp.edu.my/6675/
institution Universiti Teknologi Petronas
building UTP Resource Centre
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Petronas
content_source UTP Institutional Repository
url_provider http://eprints.utp.edu.my/
topic QC Physics
spellingShingle QC Physics
Abou-Hamad, Edy
Babaa, Moualy Rachid
Bouhrara, Mohamed
Kim, Y
Saih, Youssef
Dennler, Samuel
Mauri, Fabrizio
Basset, Jean-Marie
Goze-Bac, Christophe
Wagberg, Thomas
Structural properties of carbon nanotubes derived from 13C NMR
description We present a detailed experimental and theoretical study on how structural properties of carbon nanotubes can be derived from 13C NMR investigations. Magic angle spinning solid state NMR experiments have been performed on single- and multiwalled carbon nanotubes with diameters in the range from 0.7 to 100 nm and with number of walls from 1 to 90. We provide models on how diameter and the number of nanotube walls influence NMR linewidth and line position. Both models are supported by theoretical calculations. Increasing the diameter D, from the smallest investigated nanotube, which in our study corresponds to the inner nanotube of a double-walled tube to the largest studied diameter, corresponding to large multiwalled nanotubes, leads to a 23.5 ppm diamagnetic shift of the isotropic NMR line position δ. We show that the isotropic line follows the relation δ = 18.3/D + 102.5 ppm, where D is the diameter of the tube and NMR line position δ is relative to tetramethylsilane. The relation asymptotically tends to approach the line position expected in graphene. A characteristic broadening of the line shape is observed with the increasing number of walls. This feature can be rationalized by an isotropic shift distribution originating from different diamagnetic shielding of the encapsulated nanotubes together with a heterogeneity of the samples. Based on our results, NMR is shown to be a nondestructive spectroscopic method that can be used as a complementary method to, for example, transmission electron microscopy to obtain structural information for carbon nanotubes, especially bulk samples.
format Article
author Abou-Hamad, Edy
Babaa, Moualy Rachid
Bouhrara, Mohamed
Kim, Y
Saih, Youssef
Dennler, Samuel
Mauri, Fabrizio
Basset, Jean-Marie
Goze-Bac, Christophe
Wagberg, Thomas
author_facet Abou-Hamad, Edy
Babaa, Moualy Rachid
Bouhrara, Mohamed
Kim, Y
Saih, Youssef
Dennler, Samuel
Mauri, Fabrizio
Basset, Jean-Marie
Goze-Bac, Christophe
Wagberg, Thomas
author_sort Abou-Hamad, Edy
title Structural properties of carbon nanotubes derived from 13C NMR
title_short Structural properties of carbon nanotubes derived from 13C NMR
title_full Structural properties of carbon nanotubes derived from 13C NMR
title_fullStr Structural properties of carbon nanotubes derived from 13C NMR
title_full_unstemmed Structural properties of carbon nanotubes derived from 13C NMR
title_sort structural properties of carbon nanotubes derived from 13c nmr
publisher American Physical Society
publishDate 2011
url http://eprints.utp.edu.my/6675/1/Babaa_edy_PRB2011.pdf
http://prb.aps.org/
http://eprints.utp.edu.my/6675/
_version_ 1738655511209836544
score 13.211869

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