Application of an absorption-based surface plasmon resonance principle to the development of spr ammonium ion and enzyme sensors

Eiji Fujii, Takashi Koike, Kaori Nakamura, Shin ichi Sasaki, Kazuyoshi Kurihara, Daniel Citterio, Yuzuru Iwasaki, Osamu Niwa, Koji Suzuki

Research output: Contribution to journalArticle

35 Citations (Scopus)

Abstract

Two new types of surface plasmon resonance (SPR) sensors that can determine the concentration of ammonium cations and urea were realized based on the previously reported theory of the absorption-based SPR measurement method. The change of the dielectric constant caused by the change of the light absorption characteristics of dyes incorporated in a sensing membrane phase is utilized in these SPR sensors. The determination of ions using the SPR sensor was realized by detecting the SPR signals of the minimum reflectance related to the change of absorption spectra of the dye in the ion optode membrane consisting of an ammonium-selective ionophore (TD19C6) and a lipophilic cationic dye (KD-M11) that shows absorption spectral changes due to protonation and deprotonation. A SPR enzyme sensor that can determine the concentration of urea was prepared by the combination of this ion optode membrane and an enzyme membrane based on urease. With the newly developed SPR sensors, the intensity changes of the reflectance at the fixed SPR resonance angle are monitored, which is different from conventional SPR sensors where usually the change of the SPR resonance angles is detected. In a continuous-flow experiment using the SPR ion sensor for NH4 + ion determination, a dynamic measurement range from 10-5 to 10-2 M was achieved. In the case of the enzyme-based SPR urea sensor, a dynamic range from 10-4 to 10-1 M was observed in a stopped-flow batch arrangement. It is expected that this sensing technique can be applied for the SPR-based detection of a wide range of low molecular weight analytes.

Original languageEnglish
Pages (from-to)6106-6110
Number of pages5
JournalAnalytical Chemistry
Volume74
Issue number23
DOIs
Publication statusPublished - 2002 Dec 1
Externally publishedYes

Fingerprint

Enzyme sensors
Surface plasmon resonance
Ammonium Compounds
Ions
Sensors
Membranes
Urea
Coloring Agents
Deprotonation
Urease
Protonation
Ionophores
Enzymes

ASJC Scopus subject areas

  • Analytical Chemistry

Cite this

Application of an absorption-based surface plasmon resonance principle to the development of spr ammonium ion and enzyme sensors. / Fujii, Eiji; Koike, Takashi; Nakamura, Kaori; Sasaki, Shin ichi; Kurihara, Kazuyoshi; Citterio, Daniel; Iwasaki, Yuzuru; Niwa, Osamu; Suzuki, Koji.

In: Analytical Chemistry, Vol. 74, No. 23, 01.12.2002, p. 6106-6110.

Research output: Contribution to journalArticle

Fujii, E, Koike, T, Nakamura, K, Sasaki, SI, Kurihara, K, Citterio, D, Iwasaki, Y, Niwa, O & Suzuki, K 2002, 'Application of an absorption-based surface plasmon resonance principle to the development of spr ammonium ion and enzyme sensors', Analytical Chemistry, vol. 74, no. 23, pp. 6106-6110. https://doi.org/10.1021/ac0258655
Fujii, Eiji ; Koike, Takashi ; Nakamura, Kaori ; Sasaki, Shin ichi ; Kurihara, Kazuyoshi ; Citterio, Daniel ; Iwasaki, Yuzuru ; Niwa, Osamu ; Suzuki, Koji. / Application of an absorption-based surface plasmon resonance principle to the development of spr ammonium ion and enzyme sensors. In: Analytical Chemistry. 2002 ; Vol. 74, No. 23. pp. 6106-6110.
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