In situ raman spectroelectrochemistry of single-walled carbon nanotubes: Investigation of materials enriched with (6,5) tubes

Ladislav Kavan, Otakar Frank, Alexander A. Green, Mark C Hersam, János Koltai, Viktor Zólyomi, Jeno Kürti, Lothar Dunsch

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

Single-walled carbon nanotubes (CoMoCat) have been enriched with (6,5) tubes via density-gradient ultracentrifugation. Thin solid films of quasi-isolated nanotubes were fabricated from a solution of sorted nanotubes by vacuum filtration and extraction with water. Optical spectroscopy in the vis-NIR region and Raman spectroscopy were used to characterize these materials. The experimental studies were supported by a theoretical analysis of the electronic and vibrational structure of selected (n, m) tubes by using density functional theory. Besides the most abundant tubes (6,5), the experimental and theoretical data for tubes (6,4),(7,3),(7,5),(8,3), and (9,1) are also discussed. A detailed investigation by in situ Raman spectroelectrochemistry was focused on the effects of electrochemical p-/n-doping. The experimental analysis of the intensities and frequencies of the radial breathing mode and the tangential displacement modes were correlated with the theoretically calculated optical transition energies and Raman frequencies. It was demonstrated that electrochemical charging is a useful tool for the study of doping effects on the electronic structure of carbon nanotubes.

Original languageEnglish
Pages (from-to)14179-14187
Number of pages9
JournalJournal of Physical Chemistry C
Volume112
Issue number36
DOIs
Publication statusPublished - Sep 11 2008

Fingerprint

Spectroelectrochemistry
Single-walled carbon nanotubes (SWCN)
Nanotubes
carbon nanotubes
Doping (additives)
tubes
Carbon Nanotubes
Optical transitions
Electronic structure
Density functional theory
Raman spectroscopy
Carbon nanotubes
nanotubes
Vacuum
electronic structure
Water
breathing
optical transition
spectroscopy
charging

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Electronic, Optical and Magnetic Materials
  • Surfaces, Coatings and Films
  • Energy(all)

Cite this

In situ raman spectroelectrochemistry of single-walled carbon nanotubes : Investigation of materials enriched with (6,5) tubes. / Kavan, Ladislav; Frank, Otakar; Green, Alexander A.; Hersam, Mark C; Koltai, János; Zólyomi, Viktor; Kürti, Jeno; Dunsch, Lothar.

In: Journal of Physical Chemistry C, Vol. 112, No. 36, 11.09.2008, p. 14179-14187.

Research output: Contribution to journalArticle

Kavan, Ladislav ; Frank, Otakar ; Green, Alexander A. ; Hersam, Mark C ; Koltai, János ; Zólyomi, Viktor ; Kürti, Jeno ; Dunsch, Lothar. / In situ raman spectroelectrochemistry of single-walled carbon nanotubes : Investigation of materials enriched with (6,5) tubes. In: Journal of Physical Chemistry C. 2008 ; Vol. 112, No. 36. pp. 14179-14187.
@article{57fab293a8834ccaa15c6e2556a6d453,
title = "In situ raman spectroelectrochemistry of single-walled carbon nanotubes: Investigation of materials enriched with (6,5) tubes",
abstract = "Single-walled carbon nanotubes (CoMoCat) have been enriched with (6,5) tubes via density-gradient ultracentrifugation. Thin solid films of quasi-isolated nanotubes were fabricated from a solution of sorted nanotubes by vacuum filtration and extraction with water. Optical spectroscopy in the vis-NIR region and Raman spectroscopy were used to characterize these materials. The experimental studies were supported by a theoretical analysis of the electronic and vibrational structure of selected (n, m) tubes by using density functional theory. Besides the most abundant tubes (6,5), the experimental and theoretical data for tubes (6,4),(7,3),(7,5),(8,3), and (9,1) are also discussed. A detailed investigation by in situ Raman spectroelectrochemistry was focused on the effects of electrochemical p-/n-doping. The experimental analysis of the intensities and frequencies of the radial breathing mode and the tangential displacement modes were correlated with the theoretically calculated optical transition energies and Raman frequencies. It was demonstrated that electrochemical charging is a useful tool for the study of doping effects on the electronic structure of carbon nanotubes.",
author = "Ladislav Kavan and Otakar Frank and Green, {Alexander A.} and Hersam, {Mark C} and J{\'a}nos Koltai and Viktor Z{\'o}lyomi and Jeno K{\"u}rti and Lothar Dunsch",
year = "2008",
month = "9",
day = "11",
doi = "10.1021/jp800481b",
language = "English",
volume = "112",
pages = "14179--14187",
journal = "Journal of Physical Chemistry C",
issn = "1932-7447",
publisher = "American Chemical Society",
number = "36",

}

TY - JOUR

T1 - In situ raman spectroelectrochemistry of single-walled carbon nanotubes

T2 - Investigation of materials enriched with (6,5) tubes

AU - Kavan, Ladislav

AU - Frank, Otakar

AU - Green, Alexander A.

AU - Hersam, Mark C

AU - Koltai, János

AU - Zólyomi, Viktor

AU - Kürti, Jeno

AU - Dunsch, Lothar

PY - 2008/9/11

Y1 - 2008/9/11

N2 - Single-walled carbon nanotubes (CoMoCat) have been enriched with (6,5) tubes via density-gradient ultracentrifugation. Thin solid films of quasi-isolated nanotubes were fabricated from a solution of sorted nanotubes by vacuum filtration and extraction with water. Optical spectroscopy in the vis-NIR region and Raman spectroscopy were used to characterize these materials. The experimental studies were supported by a theoretical analysis of the electronic and vibrational structure of selected (n, m) tubes by using density functional theory. Besides the most abundant tubes (6,5), the experimental and theoretical data for tubes (6,4),(7,3),(7,5),(8,3), and (9,1) are also discussed. A detailed investigation by in situ Raman spectroelectrochemistry was focused on the effects of electrochemical p-/n-doping. The experimental analysis of the intensities and frequencies of the radial breathing mode and the tangential displacement modes were correlated with the theoretically calculated optical transition energies and Raman frequencies. It was demonstrated that electrochemical charging is a useful tool for the study of doping effects on the electronic structure of carbon nanotubes.

AB - Single-walled carbon nanotubes (CoMoCat) have been enriched with (6,5) tubes via density-gradient ultracentrifugation. Thin solid films of quasi-isolated nanotubes were fabricated from a solution of sorted nanotubes by vacuum filtration and extraction with water. Optical spectroscopy in the vis-NIR region and Raman spectroscopy were used to characterize these materials. The experimental studies were supported by a theoretical analysis of the electronic and vibrational structure of selected (n, m) tubes by using density functional theory. Besides the most abundant tubes (6,5), the experimental and theoretical data for tubes (6,4),(7,3),(7,5),(8,3), and (9,1) are also discussed. A detailed investigation by in situ Raman spectroelectrochemistry was focused on the effects of electrochemical p-/n-doping. The experimental analysis of the intensities and frequencies of the radial breathing mode and the tangential displacement modes were correlated with the theoretically calculated optical transition energies and Raman frequencies. It was demonstrated that electrochemical charging is a useful tool for the study of doping effects on the electronic structure of carbon nanotubes.

UR - http://www.scopus.com/inward/record.url?scp=52649173273&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=52649173273&partnerID=8YFLogxK

U2 - 10.1021/jp800481b

DO - 10.1021/jp800481b

M3 - Article

AN - SCOPUS:52649173273

VL - 112

SP - 14179

EP - 14187

JO - Journal of Physical Chemistry C

JF - Journal of Physical Chemistry C

SN - 1932-7447

IS - 36

ER -