Author/Authors :
Matulaitien?، نويسنده , , Ieva and Barkauskas، نويسنده , , Jurgis and Trusovas، نويسنده , , Romualdas and Ra?iukaitis، نويسنده , , Gediminas and Ma?eikien?، نويسنده , , Regina and Eicher-Lorka، نويسنده , , Olegas and Niaura، نويسنده , , Gediminas، نويسنده ,
Abstract :
The reduced graphene oxide was prepared at interface of Au electrode modified by positive charge bearing self-assembled monolayer of N-(6-mercapto)hexylpyridinium. Surface-enhanced Raman spectroscopy (SERS) was employed to probe in situ the potential induced changes in parameters of D- and G-bands. We demonstrated that both D- and G-band wavenumbers linearly depend on the potential with slopes of 4.7 ± 0.3 and 5.9 ± 0.3 cm−1/V, respectively. The decrease in width of both bands was detected at more positive potentials. The effect was explained in terms of changes in the C–C bond length induced by the electrochemical doping.
