Synthesis of dark brown single-walled carbon nanotubes and their characterization by HSQC-NMR
We report here a simple and effective approach to the covalent attachment of single-walled carbon nanotubes (SWCNTs) and azo compounds. The functionalized SWCNTs prepared (through a radical mechanism) have been used for a diazonium coupling reaction. The results showed that the chemical method used has improved the processability and solubility of the carbon nanotubes. The dark brown SWCNTs obtained which can produce a yellow colour in organic solvents were characterized by different spectroscopic analyses. Heteronuclear single quantum coherence spectra (13C-1H HSQC) have been used to detect the carbon nanotube allylic protons. The morphology of the main product has been shown by scanning electron microscopy (SEM).
|Keywords||Carbon nanotubes, heteronuclear single quantum coherence spectra; covalent attachment; azo compound.|
|Journal||Journal of Chemical Sciences|
Amiri, R. (Rahebeh), Rafiee, H. (Hamidreza), Golshani, A, & Chalabian, F. (Firoozeh). (2013). Synthesis of dark brown single-walled carbon nanotubes and their characterization by HSQC-NMR. Journal of Chemical Sciences, 125(2), 431–436. doi:10.1007/s12039-013-0380-3