Functionalization of carbon nanotubes using phenosafranin

The functionalization of carbon nanotubes by using phenosafranin was discussed. The self-assembly of phenosafranin (PSF) to multiwalled carbon nanotube (MWNT) was shown by using spectroscopic analysis and atomic force microscopy (AFM) phase imaging studies. It was observed that the shift in absorption spectra was associated with charge transfer of valence electrons from PSF to electron accepting sites on the MWNT. The Raman-active disorder modes were used to fingerprint PSF attachment to MWNT via defect states. A molecular topographic visual confirmation of PSF attached to the MWNT was obtained by using AFM phase imaging.