Simultaneous Quantification of Fullerenes C<sub>60</sub> and C<sub>70</sub> in Organic Solvents by Excitation–Emission Matrix Fluorescence Spectroscopy
Ivan V. Mikheev,
Viktor A. Verkhovskii,
Sofiya M. Byvsheva,
Dmitry S. Volkov,
Mikhail A. Proskurnin,
Vladimir K. Ivanov
Affiliations
Ivan V. Mikheev
Chemistry Department, Lomonosov Moscow State University, Leninskie Gory, 1-3, GSP-1, Moscow 119991, Russia
Viktor A. Verkhovskii
Chemistry Department, Lomonosov Moscow State University, Leninskie Gory, 1-3, GSP-1, Moscow 119991, Russia
Sofiya M. Byvsheva
Chemistry Department, Lomonosov Moscow State University, Leninskie Gory, 1-3, GSP-1, Moscow 119991, Russia
Dmitry S. Volkov
Chemistry Department, Lomonosov Moscow State University, Leninskie Gory, 1-3, GSP-1, Moscow 119991, Russia
Mikhail A. Proskurnin
Chemistry Department, Lomonosov Moscow State University, Leninskie Gory, 1-3, GSP-1, Moscow 119991, Russia
Vladimir K. Ivanov
Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Moscow 117901, Russia
Excitation–emission matrix (EEM) fluorescence spectroscopy of unmodified (pristine) fullerenes C60 and C70 in benzene, toluene, and n-hexane at room temperature was used for their quantification by their solvent-dependent EEM bands specific to each fullerene. The intensity and parameters of fluorescence depend on both the fullerene and solvent and provide the conditions for the quantification of both fullerenes in their mixtures without separation. The detection limits for C60 in n-hexane and C70 in benzene under the selected conditions are 7 and 2 nmol/L, respectively. The approach was tested for model and real mixtures of fullerenes C60 and C70.
