A new polymer electrolyte for reversible photoresponsive ionic conduction

✍ Scribed by Norihisa Kobayashi; Shoko Sato; Koji Takazawa; Koji Ikeda; Ryo Hirohashi

• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 307 KB
• Volume: 40
• Category: Article
• ISSN: 0013-4686
• DOI: 10.1016/0013-4686(95)00184-g

✦ Synopsis

This paper concerns photoinduced ionic conductivity response in the polymer electrolyte, which is synchronized with reversible photochromic chelation of spiropyran and a di-valent cation. The polymer having (methoxy)spiropyran groups, which is expected to show photochromic chelation with di-valent cations in the solid state upon uu irradiation, was synthesized and complexed with ZnCl,. Reversible photoinduced ionic conductivity response was found in the resulting polymer electrolyte and was synchronized with reversible photochromic chelation. The photochromic chelation was revealed to decrease the carrier number in the polymer electrolyte and consequently to decrease the ionic conductivity. Further, the present photochromic chelation was easily suppressed by vis. illumination, resulting in the ionic conductivity being restored to the initial value.