An electrochemical sensor for dopamine detection using poly-tryptophan composited graphene on glassy carbon as the electrode
A sensitive electrochemical sensor for dopamine (DA) determination was developed using electrochemically polymerized L-tryptophan on graphene-coated glassy carbon ( GC) as the electrode. The composite electrode showed an excellent electrochemical catalytic activity towards DA oxidation. The peak oxi...
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| Veröffentlicht in: | New carbon materials 2020-02, Vol.35 (1), p.34-41 |
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| container_start_page | 34 |
| container_title | New carbon materials |
| container_volume | 35 |
| creator | Gong, Qiao-juan Han, Hai-xia Wang, Yong-dong Yao, Chen-zhong Yang, Hai-ying Qiao, Jin-li |
| description | A sensitive electrochemical sensor for dopamine (DA) determination was developed using electrochemically polymerized L-tryptophan on graphene-coated glassy carbon ( GC) as the electrode. The composite electrode showed an excellent electrochemical catalytic activity towards DA oxidation. The peak oxidation current, recorded by differential pulse voltammetry, is logarithmically proportional to the DA concentration from 0. 2 to 100 mu M. The electrode has a high detection selectivity in the presence of a high concentration of ascorbic acid and a low detection limit of 0. 06 mu M, which has been used for DA detection in real samples. The success of the sensor in DA detection is ascribed to a combined effect of the high surface area and high conductivity of graphene and pi-pi stacking interaction between graphene and p-L-Trp. |
| doi_str_mv | 10.1016/S1872-5805(20)60473-5 |
| format | Article |
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The composite electrode showed an excellent electrochemical catalytic activity towards DA oxidation. The peak oxidation current, recorded by differential pulse voltammetry, is logarithmically proportional to the DA concentration from 0. 2 to 100 mu M. The electrode has a high detection selectivity in the presence of a high concentration of ascorbic acid and a low detection limit of 0. 06 mu M, which has been used for DA detection in real samples. 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The composite electrode showed an excellent electrochemical catalytic activity towards DA oxidation. The peak oxidation current, recorded by differential pulse voltammetry, is logarithmically proportional to the DA concentration from 0. 2 to 100 mu M. The electrode has a high detection selectivity in the presence of a high concentration of ascorbic acid and a low detection limit of 0. 06 mu M, which has been used for DA detection in real samples. The success of the sensor in DA detection is ascribed to a combined effect of the high surface area and high conductivity of graphene and pi-pi stacking interaction between graphene and p-L-Trp.</description><subject>Ascorbic acid</subject><subject>Catalytic activity</subject><subject>Chemical sensors</subject><subject>Coated electrodes</subject><subject>Dopamine</subject><subject>Electrodes</subject><subject>Glassy carbon</subject><subject>Graphene</subject><subject>Materials Science</subject><subject>Materials Science, Multidisciplinary</subject><subject>Oxidation</subject><subject>Science & Technology</subject><subject>Selectivity</subject><subject>Sensors</subject><subject>Technology</subject><subject>Tryptophan</subject><issn>1007-8827</issn><issn>1872-5805</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><sourceid>AOWDO</sourceid><recordid>eNqNkE9LxDAQxYsouK5-BCHgRZHqJGma9rgs_oMFD-p5SdPpbpduEpMUWfDDG1n17GGYN8PvzcDLsnMKNxRoeftCK8lyUYG4ZHBVQiF5Lg6yyd_6MGkAmVcVk8fZSQgbgJIyBpPsc2YIDqijt3qN216rgQQ0wXrSpWqtU9veIGkxJqi3hoyhNyvi7LDLo9-5aN1aGaLt1tnQR2zJyiu3xuRJ8GpQIeyIVr5JkwokrvH3X4un2VGnhoBnP32avd3fvc4f88Xzw9N8tsgdrXjMaS2FbhslWEsLVTNZN6xDzWpJC6YZFC2WRcWgrdNG0VLoGmmCBO-kbjrFp9nF_q7z9n3EEJcbO3qTXi4ZrzlUVApIVLWnPrCxXdA9Go1L5_ut8rslAAjGOS1TkknO-6i-45jb0cRkvf6_lX8BE9-D4Q</recordid><startdate>20200201</startdate><enddate>20200201</enddate><creator>Gong, Qiao-juan</creator><creator>Han, Hai-xia</creator><creator>Wang, Yong-dong</creator><creator>Yao, Chen-zhong</creator><creator>Yang, Hai-ying</creator><creator>Qiao, Jin-li</creator><general>Elsevier</general><general>Chinese Academy of Sciences</general><scope>AOWDO</scope><scope>BLEPL</scope><scope>DTL</scope><scope>7QQ</scope><scope>7SR</scope><scope>8FD</scope><scope>F28</scope><scope>FR3</scope><scope>JG9</scope></search><sort><creationdate>20200201</creationdate><title>An electrochemical sensor for dopamine detection using poly-tryptophan composited graphene on glassy carbon as the electrode</title><author>Gong, Qiao-juan ; Han, Hai-xia ; Wang, Yong-dong ; Yao, Chen-zhong ; Yang, Hai-ying ; Qiao, Jin-li</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-p183t-1975cdba52d14a9279b2fec297142c204de64820d9971a165c9e179b53f7cbfa3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>chi ; eng</language><creationdate>2020</creationdate><topic>Ascorbic acid</topic><topic>Catalytic activity</topic><topic>Chemical sensors</topic><topic>Coated electrodes</topic><topic>Dopamine</topic><topic>Electrodes</topic><topic>Glassy carbon</topic><topic>Graphene</topic><topic>Materials Science</topic><topic>Materials Science, Multidisciplinary</topic><topic>Oxidation</topic><topic>Science & Technology</topic><topic>Selectivity</topic><topic>Sensors</topic><topic>Technology</topic><topic>Tryptophan</topic><toplevel>online_resources</toplevel><creatorcontrib>Gong, Qiao-juan</creatorcontrib><creatorcontrib>Han, Hai-xia</creatorcontrib><creatorcontrib>Wang, Yong-dong</creatorcontrib><creatorcontrib>Yao, Chen-zhong</creatorcontrib><creatorcontrib>Yang, Hai-ying</creatorcontrib><creatorcontrib>Qiao, Jin-li</creatorcontrib><collection>Web of Science - Science Citation Index Expanded - 2020</collection><collection>Web of Science Core Collection</collection><collection>Science Citation Index Expanded</collection><collection>Ceramic Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>Technology Research Database</collection><collection>ANTE: Abstracts in New Technology & Engineering</collection><collection>Engineering Research Database</collection><collection>Materials Research Database</collection><jtitle>New carbon materials</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Gong, Qiao-juan</au><au>Han, Hai-xia</au><au>Wang, Yong-dong</au><au>Yao, Chen-zhong</au><au>Yang, Hai-ying</au><au>Qiao, Jin-li</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>An electrochemical sensor for dopamine detection using poly-tryptophan composited graphene on glassy carbon as the electrode</atitle><jtitle>New carbon materials</jtitle><stitle>NEW CARBON MATER</stitle><date>2020-02-01</date><risdate>2020</risdate><volume>35</volume><issue>1</issue><spage>34</spage><epage>41</epage><pages>34-41</pages><issn>1007-8827</issn><eissn>1872-5805</eissn><abstract>A sensitive electrochemical sensor for dopamine (DA) determination was developed using electrochemically polymerized L-tryptophan on graphene-coated glassy carbon ( GC) as the electrode. The composite electrode showed an excellent electrochemical catalytic activity towards DA oxidation. The peak oxidation current, recorded by differential pulse voltammetry, is logarithmically proportional to the DA concentration from 0. 2 to 100 mu M. The electrode has a high detection selectivity in the presence of a high concentration of ascorbic acid and a low detection limit of 0. 06 mu M, which has been used for DA detection in real samples. The success of the sensor in DA detection is ascribed to a combined effect of the high surface area and high conductivity of graphene and pi-pi stacking interaction between graphene and p-L-Trp.</abstract><cop>AMSTERDAM</cop><pub>Elsevier</pub><doi>10.1016/S1872-5805(20)60473-5</doi><tpages>8</tpages></addata></record> |
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| source | ScienceDirect Journals (5 years ago - present); Web of Science - Science Citation Index Expanded - 2020<img src="https://exlibris-pub.s3.amazonaws.com/fromwos-v2.jpg" /> |
| subjects | Ascorbic acid Catalytic activity Chemical sensors Coated electrodes Dopamine Electrodes Glassy carbon Graphene Materials Science Materials Science, Multidisciplinary Oxidation Science & Technology Selectivity Sensors Technology Tryptophan |
| title | An electrochemical sensor for dopamine detection using poly-tryptophan composited graphene on glassy carbon as the electrode |
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