Study of the electrochromism of polypyrrole/dodecylsulfate in aqueous solutions

✍ Scribed by Marco A. De Paoli; Stefania Panero; Paola Prosperi; B. Scrosati

• Publisher: Elsevier Science
• Year: 1990
• Tongue: English
• Weight: 385 KB
• Volume: 35
• Category: Article
• ISSN: 0013-4686
• DOI: 10.1016/0013-4686(90)80030-r

✦ Synopsis

Galvanostatic synthesis of polypyrrole on indium tin oxide (ITO)-coated glass electrodes at low current density in an aqueous solution containing sodium dodecylsulfate produces thin electrochromic films. The white light film transmittance passes from 50% to 98% during cycling from -0.9 to 0.6 V US see with color changes from brown to violet and finally to yellow. Absorption spectra at different potentials and change of transmittance at different wavelengths as a function of potential are furnished. The polypyrrole/dodecylsulfate films show a higher cyclability than polypyrrole obtained with other inorganic counter-ions.