Preparation of β-cyclodextrin entrapped graphite composite for sensitive detection of dopamine

Selvakumar Palanisamy; S. Sakthinathan; Shen Ming Chen; Balamurugan Thirumalraj; Tsung Han Wu; Bih Show Lou; Xiaoheng Liu

doi:10.1016/j.carbpol.2015.09.008

Preparation of β-cyclodextrin entrapped graphite composite for sensitive detection of dopamine

Selvakumar Palanisamy, S. Sakthinathan, Shen Ming Chen, Balamurugan Thirumalraj, Tsung Han Wu, Bih Show Lou, Xiaoheng Liu

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

57 Scopus citations

Abstract

A simple dopamine (DA) electrochemical sensor was developed based on a screen-printed carbon electrode (SPCE) modified with β-cyclodextrin entrapped graphite (GR/β-CD) composite for the first time. The polar hydroxyl groups on the β-CD rims interact with polar groups of edges of GR sheets resulting into the high dispersion ability of GR in β-CD solution. The GR/β-CD modified electrode exhibited a higher electrochemical response to DA with a lower oxidation potential (0.224 V) than that of bare/β-CD (0.38 V) and GR (0.525 V) modified SPCEs, revealing an excellent electro-oxidation behavior of GR/β-CD composite toward DA. Under optimum conditions, the fabricated sensor detects the DA in the linear concentration range from 0.1 to 58.5 μM with a limit of detection of 0.011 μM and the sensitivity of 1.27 ± 0.02 μA μM^-1 cm^-2. The fabricated sensor also exhibits the excellent repeatability, practicality, reproducibility, storage stability along with acceptable selectivity. 7copy; 2015 Elsevier Ltd. All rights reserved.

Original language	British English
Pages (from-to)	267-273
Number of pages	7
Journal	Carbohydrate Polymers
Volume	135
DOIs	https://doi.org/10.1016/j.carbpol.2015.09.008
State	Published - 1 Jan 2016

Keywords

Differential pulse voltammetry
Dopamine
Graphite
Screen-printed carbon electrode
β-Cyclodextrin

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10.1016/j.carbpol.2015.09.008

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title = "Preparation of β-cyclodextrin entrapped graphite composite for sensitive detection of dopamine",

abstract = "A simple dopamine (DA) electrochemical sensor was developed based on a screen-printed carbon electrode (SPCE) modified with β-cyclodextrin entrapped graphite (GR/β-CD) composite for the first time. The polar hydroxyl groups on the β-CD rims interact with polar groups of edges of GR sheets resulting into the high dispersion ability of GR in β-CD solution. The GR/β-CD modified electrode exhibited a higher electrochemical response to DA with a lower oxidation potential (0.224 V) than that of bare/β-CD (0.38 V) and GR (0.525 V) modified SPCEs, revealing an excellent electro-oxidation behavior of GR/β-CD composite toward DA. Under optimum conditions, the fabricated sensor detects the DA in the linear concentration range from 0.1 to 58.5 μM with a limit of detection of 0.011 μM and the sensitivity of 1.27 ± 0.02 μA μM-1 cm-2. The fabricated sensor also exhibits the excellent repeatability, practicality, reproducibility, storage stability along with acceptable selectivity. 7copy; 2015 Elsevier Ltd. All rights reserved.",

keywords = "Differential pulse voltammetry, Dopamine, Graphite, Screen-printed carbon electrode, β-Cyclodextrin",

author = "Selvakumar Palanisamy and S. Sakthinathan and Chen, {Shen Ming} and Balamurugan Thirumalraj and Wu, {Tsung Han} and Lou, {Bih Show} and Xiaoheng Liu",

note = "Funding Information: The National Science Council and the Ministry of Education of Taiwan (Republic of China) supported this project.",

year = "2016",

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doi = "10.1016/j.carbpol.2015.09.008",

language = "British English",

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AU - Palanisamy, Selvakumar

AU - Sakthinathan, S.

AU - Chen, Shen Ming

AU - Thirumalraj, Balamurugan

AU - Wu, Tsung Han

AU - Lou, Bih Show

AU - Liu, Xiaoheng

N1 - Funding Information: The National Science Council and the Ministry of Education of Taiwan (Republic of China) supported this project.

PY - 2016/1/1

Y1 - 2016/1/1

N2 - A simple dopamine (DA) electrochemical sensor was developed based on a screen-printed carbon electrode (SPCE) modified with β-cyclodextrin entrapped graphite (GR/β-CD) composite for the first time. The polar hydroxyl groups on the β-CD rims interact with polar groups of edges of GR sheets resulting into the high dispersion ability of GR in β-CD solution. The GR/β-CD modified electrode exhibited a higher electrochemical response to DA with a lower oxidation potential (0.224 V) than that of bare/β-CD (0.38 V) and GR (0.525 V) modified SPCEs, revealing an excellent electro-oxidation behavior of GR/β-CD composite toward DA. Under optimum conditions, the fabricated sensor detects the DA in the linear concentration range from 0.1 to 58.5 μM with a limit of detection of 0.011 μM and the sensitivity of 1.27 ± 0.02 μA μM-1 cm-2. The fabricated sensor also exhibits the excellent repeatability, practicality, reproducibility, storage stability along with acceptable selectivity. 7copy; 2015 Elsevier Ltd. All rights reserved.

AB - A simple dopamine (DA) electrochemical sensor was developed based on a screen-printed carbon electrode (SPCE) modified with β-cyclodextrin entrapped graphite (GR/β-CD) composite for the first time. The polar hydroxyl groups on the β-CD rims interact with polar groups of edges of GR sheets resulting into the high dispersion ability of GR in β-CD solution. The GR/β-CD modified electrode exhibited a higher electrochemical response to DA with a lower oxidation potential (0.224 V) than that of bare/β-CD (0.38 V) and GR (0.525 V) modified SPCEs, revealing an excellent electro-oxidation behavior of GR/β-CD composite toward DA. Under optimum conditions, the fabricated sensor detects the DA in the linear concentration range from 0.1 to 58.5 μM with a limit of detection of 0.011 μM and the sensitivity of 1.27 ± 0.02 μA μM-1 cm-2. The fabricated sensor also exhibits the excellent repeatability, practicality, reproducibility, storage stability along with acceptable selectivity. 7copy; 2015 Elsevier Ltd. All rights reserved.

KW - Differential pulse voltammetry

KW - Dopamine

KW - Graphite

KW - Screen-printed carbon electrode

KW - β-Cyclodextrin

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ER -

Preparation of β-cyclodextrin entrapped graphite composite for sensitive detection of dopamine

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Keywords

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