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Okazaki T, Taniguchi H, Wagata H, Ito M, Kuramitz H, Watanabe T. Spectroelectrochemical Evaluation of a ZnO Optically Transparent Electrode Prepared by the Spin‐spray Technique. ELECTROANAL 2020. [DOI: 10.1002/elan.202000028] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Takuya Okazaki
- Department of Applied Chemistry, School of Science and TechnologyMeiji University 1-1-1, Higashimita, Tama-ku, Kawasaki Kanagawa 214-8571 Japan
| | - Hiroaki Taniguchi
- Department of Applied Chemistry, School of Science and TechnologyMeiji University 1-1-1, Higashimita, Tama-ku, Kawasaki Kanagawa 214-8571 Japan
| | - Hajime Wagata
- Department of Applied Chemistry, School of Science and TechnologyMeiji University 1-1-1, Higashimita, Tama-ku, Kawasaki Kanagawa 214-8571 Japan
| | - Mizuki Ito
- Department of Applied Chemistry, School of Science and TechnologyMeiji University 1-1-1, Higashimita, Tama-ku, Kawasaki Kanagawa 214-8571 Japan
| | - Hideki Kuramitz
- Department of Environmental Biology and Chemistry, Graduate School of Science and Engineering for ResearchUniversity of Toyama 3190 Gofuku Toyama 930-8555 Japan
| | - Tomoaki Watanabe
- Department of Applied Chemistry, School of Science and TechnologyMeiji University 1-1-1, Higashimita, Tama-ku, Kawasaki Kanagawa 214-8571 Japan
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Okazaki T, Orii T, Tan SY, Watanabe T, Taguchi A, Rahman FA, Kuramitz H. Electrochemical Long Period Fiber Grating Sensing for Electroactive Species. Anal Chem 2020; 92:9714-9721. [PMID: 32551577 DOI: 10.1021/acs.analchem.0c01062] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We present an electrochemical long period fiber grating (LPFG) sensor for electroactive species with an optically transparent electrode. The sensor was fabricated by coating indium tin oxide onto the surface of LPFG using a polygonal barrel-sputtering method. LPFG was produced by an electric arc-induced technique. The sensing is based on change in the detection of electron density on the electrode surface during potential application and its reduction by electrochemical redox of analytes. Four typical electroactive species of methylene blue, hexaammineruthenium(III), ferrocyanide, and ferrocenedimethanol were used to investigate the sensor performance. The concentrations of analytes were determined by the modulation of the potential as the change in transmittance around the resonance band of LPFG. The sensitivity of the sensor, particularly to methylene blue, was high, and the sensor responded to a wide concentration range of 0.001 mM to 1 mM.
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Affiliation(s)
- Takuya Okazaki
- Department of Environmental Biology and Chemistry, Graduate School of Science and Engineering for Research, University of Toyama, 3190 Gofuku, Toyama 930-8555, Japan.,Department of Applied Chemistry, School of Science and Technology, Meiji University, 1-1-1, Higashimita, Tama-ku, Kawasaki, Kanagawa 214-8571, Japan
| | - Tatsuya Orii
- Department of Environmental Biology and Chemistry, Graduate School of Science and Engineering for Research, University of Toyama, 3190 Gofuku, Toyama 930-8555, Japan
| | - Shin-Yinn Tan
- Faculty of Engineering and Green Technology, Universiti Tunku Abdul Rahman, Jalan Universiti, Bandar Barat, 39100 Kampar, Malaysia
| | - Tomoaki Watanabe
- Department of Applied Chemistry, School of Science and Technology, Meiji University, 1-1-1, Higashimita, Tama-ku, Kawasaki, Kanagawa 214-8571, Japan
| | - Akira Taguchi
- Hydrogen Isotope Research Center, University of Toyama, 3190 Gofuku, Toyama 930-8555, Japan
| | - Faidz A Rahman
- Lee Kong Chian Faculty of Engineering and Science, Universiti Tunku Abdul Rahman, Sungai Long, 43000 Selangor, Malaysia
| | - Hideki Kuramitz
- Department of Environmental Biology and Chemistry, Graduate School of Science and Engineering for Research, University of Toyama, 3190 Gofuku, Toyama 930-8555, Japan
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Tasca F, Fierro A, Nöll G. Spectroelectrochemical study revealing the redox potential of human monoamine oxidase A. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2019.06.017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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