caa a22 4500 475815963 CHVBK 20180406123810.0 cr unu---uuuuu 170329e20000801xx s 000 0 eng 10.1023/A:1004089413266 doi (NATIONALLICENCE)springer-10.1023/A:1004089413266 Rehan H. Chemistry Department, College of Education for Girls, Malaz, Riyadh, PO Box 27104, 11417, Kingdom of Saudi Arabia aut Electrosynthesis of conducting polymer films from the azo dye methoxy red [Elektronische Daten] [H. Rehan] Anodic polymerization of the azo dye methoxy red (4-methoxybenzene azo-1,3-diaminobenzene) on platinum electrodes in 1 M HCl in 50% v/v ethanol/water was found to yield thin and stable polymeric films. The films were electroactive in acidic solutions and the activity diminished as the acidity decreased. The pair of symmetrical redox peaks at a formal redox potential, (E ∘)pH=0 = 0.61 V vs SCE, with a Nernstian slope dE/dpH = 0.06 V, is attributed to a 1:1 proton + electron elimination (on oxidation)/addition (on reduction) at the amino/imino linkages which connect the aromatic nuclei. Chronocoulometric plots indicated that the transport of the solvated protons, and probably Cl− ions, through the film is the rate-determining step of the above redox processes. The rate of electron transfer reactions of the redox couple [Fe(CN)6]3−/4− on poly-methoxy red-covered platinum electrodes decreased by a factor of more than two orders of magnitude, compared to the bare electrodes. Kluwer Academic Publishers, 2000 azo dyes nationallicence conducting polymers nationallicence poly-methoxy red nationallicence Journal of Applied Electrochemistry Kluwer Academic Publishers 30/8(2000-08-01), 945-951 0021-891X 30:8<945 2000 30 10800 https://doi.org/10.1023/A:1004089413266 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1004089413266 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Rehan H. Chemistry Department, College of Education for Girls, Malaz, Riyadh, PO Box 27104, 11417, Kingdom of Saudi Arabia aut NATIONALLICENCE 773 0- Journal of Applied Electrochemistry Kluwer Academic Publishers 30/8(2000-08-01), 945-951 0021-891X 30:8<945 2000 30 10800 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer