Application of Photothermal and Photoacoustic Spectroscopy for the Monitoring of Aqueous Dispersions of Carbon Nanomaterials

Volkov, D.S.; Analytical Chemistry Division, Chemistry Department, Lomonosov Moscow State University, Moscow, 119991, Russia, Zharov, V.P.; Philips Classic Laser Laboratories, University Of Arkansas For Medical Sciences, Little Rock, Arkansas, 72205, USA, Korobov, M.V.; Analytical Chemistry Division, Chemistry Department, Lomonosov Moscow State University, Moscow, 119991, Russia, Nedosekin, D.A.; Philips Classic Laser Laboratories, University Of Arkansas For Medical Sciences, Little Rock, Arkansas, 72205, USA, Vasil’Ev, D.V.; Analytical Chemistry Division, Chemistry Department, Lomonosov Moscow State University, Moscow, 119991, Russia, Mikheev, I.V.; Analytical Chemistry Division, Chemistry Department, Lomonosov Moscow State University, Moscow, 119991, Russia & Proskurnin, M.A.; Analytical Chemistry Division, Chemistry Department, Lomonosov Moscow State University, Moscow, 119991, Russia
Photothermal  and  optoacoustic  spectroscopy  in their  state-of-the-art  techniques—multiwavelength, scanning  and  transient—are  used  for  complex investigation  and analysis  (chemical  analysis  and the  estimation  of  physicochemical  properties and size)  of  novel  carbon  materials—fullerenes  and nanodiamonds—and  their aqueous  dispersions  as promising biomedical nanosystems. The estimation of the cluster size and the possibilities to determine subnanogram  amounts  of  both nanodiamonds  and fullerenes  by  these  techniques  are  shown.  The comparison  of fullerene  solutions  in  various solvents,  toluene, N-methylpyrrolydone and  water, is made.  The  advantages  of  the  photothermal  and optoacoustic  techniques  over conventional spectroscopies  and  the...