caa a22 4500 475814711 CHVBK 20180406123806.0 cr unu---uuuuu 170329e20000101xx s 000 0 eng 10.1023/A:1003844620499 doi (NATIONALLICENCE)springer-10.1023/A:1003844620499 Electrochemical preparation and properties of composite films with polypyrrole/poly(styrene sulfonate): polyviologen multilayers [Elektronische Daten] [H. Kim, M. Pyo] Multilayers consisting of polypyrrole/poly(styrene sulfonate) (PP/PSS) and polyviologen (PV) were electrochemically prepared on Au to enhance long-term and environmental (e.g., pH) stability of PV modified electrodes. PV cationic polyelectrolytes were adsorbed on top of electrochemically synthesized PP/PSS via electrostatic interactions with PSS present at the surface of conducting polymer substrates. By alternating electrochemical synthesis of PP/PSS and PV adsorption in a single medium, multilayers were prepared up to 13 layer-pairs. The electrochemical and electrochromic properties of multilayers produced in this way were quite reproducible, since the film preparation does not require medium changes and the layer thicknesses can be finely controlled using the applied potential and time. Although the redox potential of PP/PSS shifted in the positive direction with increase in the number of layer-pairs, cyclic voltammograms of multilayers indicated that total electroactivity of PP/PSS was retained. PV molecules, sandwiched between reduced PP/PSS layers, were also fully electroactive and quite stable during repeated redox switching processes, indicative of enhanced long-term stability. Multilayers also possessed electrochromic properties which were directly proportional to the number of PV layers. Kluwer Academic Publishers, 2000 multilayer nationallicence polyelectrolyte nationallicence polypyrrole nationallicence polyviologen nationallicence Kim H. Department of Chemistry, Sunchon National University, Sunchon, 540-742, Junam, Korea aut Pyo M. Department of Chemistry, Sunchon National University, Sunchon, 540-742, Junam, Korea aut Journal of Applied Electrochemistry Kluwer Academic Publishers 30/1(2000-01-01), 49-53 0021-891X 30:1<49 2000 30 10800 https://doi.org/10.1023/A:1003844620499 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1003844620499 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kim H. Department of Chemistry, Sunchon National University, Sunchon, 540-742, Junam, Korea aut NATIONALLICENCE 700 1- Pyo M. Department of Chemistry, Sunchon National University, Sunchon, 540-742, Junam, Korea aut NATIONALLICENCE 773 0- Journal of Applied Electrochemistry Kluwer Academic Publishers 30/1(2000-01-01), 49-53 0021-891X 30:1<49 2000 30 10800 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer