Raman Spectroelectrochemistry of Ordered C₆₀Fullerene Layers

Spectroelectrochemistry of Carbon Nanostructures

“…Figure 3 shows an example of the in situ Raman spectroelectrochemical study of a solid C 60 fullerene film in alkaline aqueous electrolyte solution at the conditions of its gradual reduction. The attenuation of the A g (2) mode is apparent, along with the growth of orthorhombic polymer o ‐C 60 155. 156 In situ Raman spectroscopy has shown that both polymerization and hydrogenation of the fullerenes occur 156.…”

“…On the other hand, in ionic liquids (cf. Section 4) the charged fullerenes react with the alkyl group of imidazolium cation 155. Furthermore, IR‐spectroscopy was used to study the chemical reaction products of the fullerene,156, 157 especially if the fullerene is used in thin layers together with organic polymers 158.…”

“…The sample decomposition was prevented by rotation using a home made spectroelectrochemical cell (refs. 155, 156). Inset: Relative intensity of A g (2) mode as a function of passed electrochemical charge.…”

Electrochemical nanostructuring of fullerene films—spectroscopic evidence for C60 polymer formation and hydrogenation

“…11 Therefore the molecular and atomic structure of the nanostructured C 60 films is to be clarified. A recent in situ Raman study 12 provided a first spectroscopic indication for the formation of C 60 polymers during electrochemical reduction of ordered C 60 films in aqueous solutions. Moreover, the transferred charge which is significant for the C 60 reduction was specified to 5.5 electrons per C 60 molecule.…”

Effect of the electrolyte on the electrochemical behavior of C60 fullerene films in dimethylformamide + water mixtures

“…Later, it turned out, that fullerene films can be reduced, although irreversibly, in aqueous solutions, as well [17][18][19]. Various salt formation [20][21][22][23] and/or hydrogenation and oligomer formation of C 60 was reported [24][25][26]. Recently, we discovered, that in dimethylformamide + water mixtures of proper composition, C 60 could be reduced reversibly, if the solution contained potassium chloride [2].…”