Applications of polymer electrolytes: Electrochromics, sensors and biology

✍ Scribed by Hiroyuki Ohno

• Publisher: Elsevier Science
• Year: 1992
• Tongue: English
• Weight: 318 KB
• Volume: 37
• Category: Article
• ISSN: 0013-4686
• DOI: 10.1016/0013-4686(92)80130-e

✦ Synopsis

Ahatract-Recent

advances in the application of polymer electrolytes are introduced, one of which is the application of single-ionic conductors for electrochromic displays. As the electrochromic reactions of both Prussian Blue and WO, require migration of only the cation, poly(alkali metal methacrylate-cooligo(oxyethylene) methacrylate) was actually effective, and the coloring rate was affected by the ionic conductivity. Larger cations such as K+ induced better ECD characteristics because of their higher ionic conductivity. The other is for protein reduction. Hemoglobin (Hb) was modified with polyethylene oxide (PEO) to avoid denaturation in PEO oligomers. PEO-modified Hb (3.0 x 10e5 mol 1-l) was dissolved in PEO, containing 0.5 M KCl, and visible spectra were recorded under the given potential (< -0.5 V vs. Ag). The first order rate constant for the reduction was 2.1 x lo-'s-l.