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

doi:10.1248/cpb.37.1307

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

PHA - Molecular Pharmaceutical Science

Research output: Contribution to journal › Article › peer-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 language	English
Pages (from-to)	1307-1310
Number of pages	4
Journal	Chemical and Pharmaceutical Bulletin
Volume	37
Issue number	5
DOIs	https://doi.org/10.1248/cpb.37.1307
Publication status	Published - 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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title = "Photo-excitable Membranes: Ion-Selective Photoresponse of Poly(Vinyl Chloride)/Spirobenzopyran Membranes Doped with Nonactin and Valinomycin",

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.",

keywords = "ion-selectivity, nonactin, photoinduced membrane potential, poly(vinyl chloride)/spirobenzopyran membrane, valinomycin",

author = "Yasushi Hasebe and Junichi Anzai and Akihiko Ueno and Tetsuo Osa",

year = "1989",

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T2 - Ion-Selective Photoresponse of Poly(Vinyl Chloride)/Spirobenzopyran Membranes Doped with Nonactin and Valinomycin

AU - Hasebe, Yasushi

AU - Anzai, Junichi

AU - Ueno, Akihiko

AU - Osa, Tetsuo

PY - 1989/1/1

Y1 - 1989/1/1

N2 - 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.

AB - 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.

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KW - nonactin

KW - photoinduced membrane potential

KW - poly(vinyl chloride)/spirobenzopyran membrane

KW - valinomycin

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