Development of Amperometric Hydrogen Peroxide Sensor Based on Horseradish Peroxidase-Immobilized Poly(Thiophene-co-EpoxyThiophene)
A modified electrode for hydrogen peroxide (H2O2) sensing was prepared via thiophene (Th) with epoxy group. Thiophene (EpoxyTh) with epoxy group was synthesized by reaction of 3-bromothiophene and glycidyl methacrylate (GMA) in acetonitrile according to Heck Reaction. The electrocopolymerization of...
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| Format: | Article |
| Language: | English |
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MDPI AG
2008-07-01
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| Series: | Sensors |
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| Online Access: | http://www.mdpi.com/1424-8220/8/7/4110/ |
| _version_ | 1811279747417636864 |
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| author | Young-Taeg Lee Chang-Ho Shin Seong-Ho Choi Ming-Hua Piao Hwa-Jung Kim |
| author_facet | Young-Taeg Lee Chang-Ho Shin Seong-Ho Choi Ming-Hua Piao Hwa-Jung Kim |
| author_sort | Young-Taeg Lee |
| collection | DOAJ |
| description | A modified electrode for hydrogen peroxide (H2O2) sensing was prepared via thiophene (Th) with epoxy group. Thiophene (EpoxyTh) with epoxy group was synthesized by reaction of 3-bromothiophene and glycidyl methacrylate (GMA) in acetonitrile according to Heck Reaction. The electrocopolymerization of Th and EpoxyTh was performed on the surface of indium tin oxide (ITO) electrode by cycling the potential between -1.0 and +2.5 V in mixture of thiophene (Th) and EpoxyTh. Poly(Th-co- EpoxyTh) grown onto the ITO electrode was successfully confirmed by SEM, AFM, and water contact angle analysis, respectively. Finally, the HRP was immobilized on the surface of poly(Th-co-EpoxyTh) electrode by covalent binding. The amperometric response of the HRP-immobilized poly(Th-co-EpoxyTh) electrode for H2O2 was examined by cyclic voltammetry (CV). The HRP-immobilized poly(Th-co-EpoxyTh) electrode showed linearity from 0.1 to 30 mM H2O2, good reproducibility, and long life time. |
| first_indexed | 2024-04-13T01:01:16Z |
| format | Article |
| id | doaj.art-a33e293a5894485487ebc2d29dac8af1 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-13T01:01:16Z |
| publishDate | 2008-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-a33e293a5894485487ebc2d29dac8af12022-12-22T03:09:29ZengMDPI AGSensors1424-82202008-07-018741104118Development of Amperometric Hydrogen Peroxide Sensor Based on Horseradish Peroxidase-Immobilized Poly(Thiophene-co-EpoxyThiophene)Young-Taeg LeeChang-Ho ShinSeong-Ho ChoiMing-Hua PiaoHwa-Jung KimA modified electrode for hydrogen peroxide (H2O2) sensing was prepared via thiophene (Th) with epoxy group. Thiophene (EpoxyTh) with epoxy group was synthesized by reaction of 3-bromothiophene and glycidyl methacrylate (GMA) in acetonitrile according to Heck Reaction. The electrocopolymerization of Th and EpoxyTh was performed on the surface of indium tin oxide (ITO) electrode by cycling the potential between -1.0 and +2.5 V in mixture of thiophene (Th) and EpoxyTh. Poly(Th-co- EpoxyTh) grown onto the ITO electrode was successfully confirmed by SEM, AFM, and water contact angle analysis, respectively. Finally, the HRP was immobilized on the surface of poly(Th-co-EpoxyTh) electrode by covalent binding. The amperometric response of the HRP-immobilized poly(Th-co-EpoxyTh) electrode for H2O2 was examined by cyclic voltammetry (CV). The HRP-immobilized poly(Th-co-EpoxyTh) electrode showed linearity from 0.1 to 30 mM H2O2, good reproducibility, and long life time.http://www.mdpi.com/1424-8220/8/7/4110/Poly(Th-co-EpoxyTh) electrodeHorseradish peroxidaseCyclic voltammetryH2O2 |
| spellingShingle | Young-Taeg Lee Chang-Ho Shin Seong-Ho Choi Ming-Hua Piao Hwa-Jung Kim Development of Amperometric Hydrogen Peroxide Sensor Based on Horseradish Peroxidase-Immobilized Poly(Thiophene-co-EpoxyThiophene) Sensors Poly(Th-co-EpoxyTh) electrode Horseradish peroxidase Cyclic voltammetry H2O2 |
| title | Development of Amperometric Hydrogen Peroxide Sensor Based on Horseradish Peroxidase-Immobilized Poly(Thiophene-co-EpoxyThiophene) |
| title_full | Development of Amperometric Hydrogen Peroxide Sensor Based on Horseradish Peroxidase-Immobilized Poly(Thiophene-co-EpoxyThiophene) |
| title_fullStr | Development of Amperometric Hydrogen Peroxide Sensor Based on Horseradish Peroxidase-Immobilized Poly(Thiophene-co-EpoxyThiophene) |
| title_full_unstemmed | Development of Amperometric Hydrogen Peroxide Sensor Based on Horseradish Peroxidase-Immobilized Poly(Thiophene-co-EpoxyThiophene) |
| title_short | Development of Amperometric Hydrogen Peroxide Sensor Based on Horseradish Peroxidase-Immobilized Poly(Thiophene-co-EpoxyThiophene) |
| title_sort | development of amperometric hydrogen peroxide sensor based on horseradish peroxidase immobilized poly thiophene co epoxythiophene |
| topic | Poly(Th-co-EpoxyTh) electrode Horseradish peroxidase Cyclic voltammetry H2O2 |
| url | http://www.mdpi.com/1424-8220/8/7/4110/ |
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