Photo-excitable Membranes: Ion-Selective Photoresponse of Poly(Vinyl Chloride)/Spirobenzopyran Membranes Doped with Nonactin and Valinomycin

Yasushi Hasebe, Junichi Anzai, Akihiko Ueno, Tetsuo Osa

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

The magnitude of the photoinduced membrane potential across poly(vinyl chloride)/spirobenzopyran membranes doped with nonactin or valinomycin depended considerably upon the kind and the concentration of alkali-metal and NH4 cations in the aqueous solution adjacent to the ultraviolet (UV)-irradiated surface of the membrane. The photoresponse was suppressed with increasing concentration of the cations. The ion-selectivity in the potentiometric photoresponse of the nonactin-entrapped membrane was in the order of NH4 >K+ >Rb+ >Cs+ >Na+ >Li+, whereas the order of selectivity of Rb+ >K + >Cs+ >NH4 >Na+ >Li+ was observed for the valinomycin-doped membrane. The results can be explained in terms of the binding abilities of nonactin and valinomycin for alkali-metal and NH/ cations.

Original languageEnglish
Pages (from-to)1307-1310
Number of pages4
JournalChemical and Pharmaceutical Bulletin
Volume37
Issue number5
DOIs
Publication statusPublished - 1989 Jan 1

Keywords

  • ion-selectivity
  • nonactin
  • photoinduced membrane potential
  • poly(vinyl chloride)/spirobenzopyran membrane
  • valinomycin

ASJC Scopus subject areas

  • Chemistry(all)
  • Drug Discovery

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