Modified dispersion of functionalized multi-walled carbon nanotubes in acetonitrile

Heng Li, Jia Cai Nie, S. Kunsági-Máté

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

The dispersion of hydroxylated multi-walled carbon nanotubes was modified in non-protic acetonitrile solvent using a treatment by ethanol. The dispersion was examined by photoluminescence and Rayleigh-scattering methods. In spite of well known very low solubility of nanotubes, present results showed presence of nanotube dimers in the solution with considerable concentration. Applying a qualitative model, ΔH =-46.6 ± 12 kJ/mol and ΔS =-29.9 ± 7 J/K mol enthalpy and entropy changes were obtained during formation of nanotube dimers. This highly negative entropy term is of great importance for the deposition of carbon nanotubes by liquid phase epitaxy to enlarge the surface coverage.

Original languageEnglish
Pages (from-to)258-262
Number of pages5
JournalChemical Physics Letters
Volume492
Issue number4-6
DOIs
Publication statusPublished - Jun 7 2010

Fingerprint

Carbon Nanotubes
Nanotubes
acetonitrile
nanotubes
carbon nanotubes
Dimers
Entropy
dimers
entropy
Liquid phase epitaxy
Rayleigh scattering
liquid phase epitaxy
Enthalpy
Photoluminescence
ethyl alcohol
Ethanol
solubility
Solubility
enthalpy
photoluminescence

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Physics and Astronomy(all)

Cite this

Modified dispersion of functionalized multi-walled carbon nanotubes in acetonitrile. / Li, Heng; Nie, Jia Cai; Kunsági-Máté, S.

In: Chemical Physics Letters, Vol. 492, No. 4-6, 07.06.2010, p. 258-262.

Research output: Contribution to journalArticle

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