Ultrafast vibrational motion of carbon nanotubes in different pH environments
Ultrafast vibrational motion of carbon nanotubes in different pH environments
We have used a femtosecond pump-probe impulsive Raman technique to explore the ultrafast dynamics of micelle suspended single-walled carbon nanotubes (SWNTs) in various pH environments. The structures of coherent phonon spectra of the radial breathing modes exhibit significant pH dependence, to which we attribute the effect of the protonation at …