E. Hasdemir, Didem Deletioglu, A. Solak
Feb 7, 2011
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Journal
gazi university journal of science
Abstract
CV, SWV and CA have been used to investigate the electrochemical behaviour of 2-hydroxy-5-bromobenzaldehyde polyacrylamide ( PABSB ), 2-hydroxy-5-chlorobenzaldehyde polyacrylamide ( PACSB ) and 2-hydroxy-5-methylbenzaldehyde polyacrylamide ( PAMSB ) at the mercury electrode in aqueous media . The bromo- and chloro- derivatives were electroative while the halide-free compound, the methyl- derivative, was not. The analysis of the experimental data supports the formation of anion radicals as a result of C-X bond cleavage. Following the electron transfer step, a protonation reaction was thought to be occuring through the E irr C mechanism. The large polymeric molecules are adsorbed at the mercury electrode as expected contributing the adsorption current component to the diffusion one. Keywords: Polymeric schiff base, electrochemistry of polyacrylamide, cyclic voltammetry, chronoamperometry.