Fibre-optic potassium ion sensors based on a neutral ionophore and a novel lipophilic anionic dye

Koji Suzuki; Hiroyuki Ohzora; Koji Tohda; Kyota Miyazaki; Kazuhiko Watanabe; Hidenari Inoue; Tsuneo Shirai

doi:10.1016/S0003-2670(00)83913-6

Fibre-optic potassium ion sensors based on a neutral ionophore and a novel lipophilic anionic dye

Koji Suzuki^*, Hiroyuki Ohzora, Koji Tohda, Kyota Miyazaki, Kazuhiko Watanabe, Hidenari Inoue, Tsuneo Shirai

^*Corresponding author for this work

Applied Chemistry

Research output: Contribution to journal › Article › peer-review

85 Scopus citations

Abstract

A novel lipophilic anionic dye, N-2,4-dinitro-6-octyloxyphenyl-2′,4′-dinitro-6′-trifluoromethylphenylamine (LAD), was synthesized. On deprotonation at neutral Ph it forms anions and brings about a change in the absorption spectrum in the visible region. This anionic dye was incorporated into a poly(vinyl chloride) matrix membrane with dibenzo-18-crown-6 (DB18C6) or valinomycin, which are K⁺-selective neutral ionophores. An optical K⁺ sensor was prepared using the polymeric membrane set 1 mm apart from the tip of a bifurcated optical fibre with a cylindrical plastic support. This sensor could detect a wide range of K⁺ concentrations (10^-6-1 M K⁺ for the DB18C6-based sensor, 10^-8-10^-2 M K⁺ for the valinomycin-based sensor) at Ph 7.0 by measuring the absorbance change at 513 nm. The factors that influence the response sensitivity of the sensor are discussed theoretically.

Original language	English
Pages (from-to)	155-164
Number of pages	10
Journal	Analytica Chimica Acta
Volume	237
Issue number	C
DOIs	https://doi.org/10.1016/S0003-2670(00)83913-6
State	Published - 1990

Keywords

Ion sensor
Lipophilic anionic dye
Potassium

ASJC Scopus subject areas

Analytical Chemistry
Biochemistry
Spectroscopy
Environmental Chemistry

Access to Document

10.1016/S0003-2670(00)83913-6

Cite this

@article{1523c791b98647cf9fc24178608a3cac,

title = "Fibre-optic potassium ion sensors based on a neutral ionophore and a novel lipophilic anionic dye",

abstract = "A novel lipophilic anionic dye, N-2,4-dinitro-6-octyloxyphenyl-2′,4′-dinitro-6′-trifluoromethylphenylamine (LAD), was synthesized. On deprotonation at neutral Ph it forms anions and brings about a change in the absorption spectrum in the visible region. This anionic dye was incorporated into a poly(vinyl chloride) matrix membrane with dibenzo-18-crown-6 (DB18C6) or valinomycin, which are K+-selective neutral ionophores. An optical K+ sensor was prepared using the polymeric membrane set 1 mm apart from the tip of a bifurcated optical fibre with a cylindrical plastic support. This sensor could detect a wide range of K+ concentrations (10-6-1 M K+ for the DB18C6-based sensor, 10-8-10-2 M K+ for the valinomycin-based sensor) at Ph 7.0 by measuring the absorbance change at 513 nm. The factors that influence the response sensitivity of the sensor are discussed theoretically.",

keywords = "Ion sensor, Lipophilic anionic dye, Potassium",

author = "Koji Suzuki and Hiroyuki Ohzora and Koji Tohda and Kyota Miyazaki and Kazuhiko Watanabe and Hidenari Inoue and Tsuneo Shirai",

note = "Funding Information: The authors are greateful to the Ministry Education for partial financial assistance.",

year = "1990",

doi = "10.1016/S0003-2670(00)83913-6",

language = "英語",

volume = "237",

pages = "155--164",

journal = "Analytica Chimica Acta",

issn = "0003-2670",

publisher = "Elsevier B.V.",

number = "C",

}

TY - JOUR

T1 - Fibre-optic potassium ion sensors based on a neutral ionophore and a novel lipophilic anionic dye

AU - Suzuki, Koji

AU - Ohzora, Hiroyuki

AU - Tohda, Koji

AU - Miyazaki, Kyota

AU - Watanabe, Kazuhiko

AU - Inoue, Hidenari

AU - Shirai, Tsuneo

N1 - Funding Information: The authors are greateful to the Ministry Education for partial financial assistance.

PY - 1990

Y1 - 1990

N2 - A novel lipophilic anionic dye, N-2,4-dinitro-6-octyloxyphenyl-2′,4′-dinitro-6′-trifluoromethylphenylamine (LAD), was synthesized. On deprotonation at neutral Ph it forms anions and brings about a change in the absorption spectrum in the visible region. This anionic dye was incorporated into a poly(vinyl chloride) matrix membrane with dibenzo-18-crown-6 (DB18C6) or valinomycin, which are K+-selective neutral ionophores. An optical K+ sensor was prepared using the polymeric membrane set 1 mm apart from the tip of a bifurcated optical fibre with a cylindrical plastic support. This sensor could detect a wide range of K+ concentrations (10-6-1 M K+ for the DB18C6-based sensor, 10-8-10-2 M K+ for the valinomycin-based sensor) at Ph 7.0 by measuring the absorbance change at 513 nm. The factors that influence the response sensitivity of the sensor are discussed theoretically.

AB - A novel lipophilic anionic dye, N-2,4-dinitro-6-octyloxyphenyl-2′,4′-dinitro-6′-trifluoromethylphenylamine (LAD), was synthesized. On deprotonation at neutral Ph it forms anions and brings about a change in the absorption spectrum in the visible region. This anionic dye was incorporated into a poly(vinyl chloride) matrix membrane with dibenzo-18-crown-6 (DB18C6) or valinomycin, which are K+-selective neutral ionophores. An optical K+ sensor was prepared using the polymeric membrane set 1 mm apart from the tip of a bifurcated optical fibre with a cylindrical plastic support. This sensor could detect a wide range of K+ concentrations (10-6-1 M K+ for the DB18C6-based sensor, 10-8-10-2 M K+ for the valinomycin-based sensor) at Ph 7.0 by measuring the absorbance change at 513 nm. The factors that influence the response sensitivity of the sensor are discussed theoretically.

KW - Ion sensor

KW - Lipophilic anionic dye

KW - Potassium

UR - http://www.scopus.com/inward/record.url?scp=0025131475&partnerID=8YFLogxK

U2 - 10.1016/S0003-2670(00)83913-6

DO - 10.1016/S0003-2670(00)83913-6

M3 - 学術論文

AN - SCOPUS:0025131475

SN - 0003-2670

VL - 237

SP - 155

EP - 164

JO - Analytica Chimica Acta

JF - Analytica Chimica Acta

IS - C

ER -

Fibre-optic potassium ion sensors based on a neutral ionophore and a novel lipophilic anionic dye

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Fingerprint

Cite this