Naslov
Voltammetry of azobenzene microcrystals

Autori
Komorsky-Lovrić, Šebojka

Izvornik
Journal of solid state electrochemistry (1432-8488) 1 (1997), 1; 94-99

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
azobenzene; voltammetry; solid particles; abrazive stripping voltammetry

Sažetak
Azobenzene solid particles have been mechanically attached to a graphite electrode and measured by cyclic staircase voltammetry. Well-developed and widely separated chatodic and anodic peak were observed. Redox reaction is controlled by both the heterogeneous charge transfer kinetics and the mass transfer. Its mechanism is explained by the surface diffusion model. Reaction starts at the three-phase boundary, where electrons are transferred from the electrode surface to attached azobenzene molecules. The electrons are then propagated over the surface of microcrystals by a series of exchange reactions between hydrazobenzene and azobenzene molecules, with the participation of proton donors from the solution. The apparent mass transfer occurs in this way. In the crystal lattice the transmission of protons is not possible, and consequently there is no propagation of electrons.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA