Amperometric ascorbate sensor based on conducting polymer: Poly( N-methylaniline) versus polyaniline
Electrocatalytic oxidation of ascorbate (vitamin C) at poly( N-methylaniline) modified electrode has been studied and compared with that proceeding at polyaniline modified sensor. A sigmoid-shaped anodic current transient as a response to addition of ascorbate was found for polyaniline modified elec...
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| Veröffentlicht in: | Electrochimica acta 2007-12, Vol.53 (2), p.785-791 |
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| container_title | Electrochimica acta |
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| creator | Brazdžiuvienė, K. Jurevičiūtė, I. Malinauskas, A. |
| description | Electrocatalytic oxidation of ascorbate (vitamin C) at poly(
N-methylaniline) modified electrode has been studied and compared with that proceeding at polyaniline modified sensor. A sigmoid-shaped anodic current transient as a response to addition of ascorbate was found for polyaniline modified electrode in pH-neutral solution, whereas a ‘normal-shaped’ current transient was found to be characteristic for poly(
N-methylaniline) modified electrode. Based on this, a hypothesis on the autocatalytic mechanism for electrochemical oxidation of ascorbate was confirmed. It has been shown that poly(
N-methylaniline) modified electrode can be used as an amperometric ascorbate sensor, operating in slightly acidic or pH-neutral buffer solutions at a controlled potential of 0.1–0.5
V versus Ag/AgCl, and the dependencies of current response on ascorbate concentration, the thickness of a polymer layer, and operating potential have been analyzed. |
| doi_str_mv | 10.1016/j.electacta.2007.07.054 |
| format | Article |
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N-methylaniline) modified electrode has been studied and compared with that proceeding at polyaniline modified sensor. A sigmoid-shaped anodic current transient as a response to addition of ascorbate was found for polyaniline modified electrode in pH-neutral solution, whereas a ‘normal-shaped’ current transient was found to be characteristic for poly(
N-methylaniline) modified electrode. Based on this, a hypothesis on the autocatalytic mechanism for electrochemical oxidation of ascorbate was confirmed. It has been shown that poly(
N-methylaniline) modified electrode can be used as an amperometric ascorbate sensor, operating in slightly acidic or pH-neutral buffer solutions at a controlled potential of 0.1–0.5
V versus Ag/AgCl, and the dependencies of current response on ascorbate concentration, the thickness of a polymer layer, and operating potential have been analyzed.</description><identifier>ISSN: 0013-4686</identifier><identifier>EISSN: 1873-3859</identifier><identifier>DOI: 10.1016/j.electacta.2007.07.054</identifier><identifier>CODEN: ELCAAV</identifier><language>eng</language><publisher>Oxford: Elsevier Ltd</publisher><subject>Analytical chemistry ; Ascorbate sensor ; Chemistry ; Electroanalysis ; Electrocatalysis ; Electrochemical methods ; Exact sciences and technology ; Poly( N-methylaniline) ; Polyaniline</subject><ispartof>Electrochimica acta, 2007-12, Vol.53 (2), p.785-791</ispartof><rights>2007 Elsevier Ltd</rights><rights>2008 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c376t-8e187badc2ae8626089694bd1412b53dfa9f941ce8818d7683507c24dc6311a43</citedby><cites>FETCH-LOGICAL-c376t-8e187badc2ae8626089694bd1412b53dfa9f941ce8818d7683507c24dc6311a43</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.electacta.2007.07.054$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=19214843$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Brazdžiuvienė, K.</creatorcontrib><creatorcontrib>Jurevičiūtė, I.</creatorcontrib><creatorcontrib>Malinauskas, A.</creatorcontrib><title>Amperometric ascorbate sensor based on conducting polymer: Poly( N-methylaniline) versus polyaniline</title><title>Electrochimica acta</title><description>Electrocatalytic oxidation of ascorbate (vitamin C) at poly(
N-methylaniline) modified electrode has been studied and compared with that proceeding at polyaniline modified sensor. A sigmoid-shaped anodic current transient as a response to addition of ascorbate was found for polyaniline modified electrode in pH-neutral solution, whereas a ‘normal-shaped’ current transient was found to be characteristic for poly(
N-methylaniline) modified electrode. Based on this, a hypothesis on the autocatalytic mechanism for electrochemical oxidation of ascorbate was confirmed. It has been shown that poly(
N-methylaniline) modified electrode can be used as an amperometric ascorbate sensor, operating in slightly acidic or pH-neutral buffer solutions at a controlled potential of 0.1–0.5
V versus Ag/AgCl, and the dependencies of current response on ascorbate concentration, the thickness of a polymer layer, and operating potential have been analyzed.</description><subject>Analytical chemistry</subject><subject>Ascorbate sensor</subject><subject>Chemistry</subject><subject>Electroanalysis</subject><subject>Electrocatalysis</subject><subject>Electrochemical methods</subject><subject>Exact sciences and technology</subject><subject>Poly( N-methylaniline)</subject><subject>Polyaniline</subject><issn>0013-4686</issn><issn>1873-3859</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2007</creationdate><recordtype>article</recordtype><recordid>eNqFkE1LxDAQhoMouH78BnNR9NA1adI09baIX7CoBz2HNJlqlrZZk-7C_ntTd9Gj8MIM4XlnJi9CZ5RMKaHiejGFFsygk6Y5IeV0VMH30ITKkmVMFtU-mhBCWcaFFIfoKMYFSaAoyQTZWbeE4DsYgjNYR-NDrQfAEfroA651BIt9j43v7coMrv_AS99uOgg3-DU1l_g5S-bPTat717oervAaQlzFH2z3doIOGt1GON3VY_R-f_d2-5jNXx6ebmfzzLBSDJmEdHGtrck1SJELIitR8dpSTvO6YLbRVVNxakBKKm0pJCtIaXJujWCUas6O0cV27jL4rxXEQXUuGmjTbeBXUTFSCZpXI1huQRN8jAEatQyu02GjKFFjqmqhflNVY6pqVDE6z3crUla6bYLujYt_9iqnXHKWuNmWg_TftYOgonHQG7AupLnKevfvrm_nZ5Me</recordid><startdate>20071201</startdate><enddate>20071201</enddate><creator>Brazdžiuvienė, K.</creator><creator>Jurevičiūtė, I.</creator><creator>Malinauskas, A.</creator><general>Elsevier Ltd</general><general>Elsevier</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope><scope>L7M</scope></search><sort><creationdate>20071201</creationdate><title>Amperometric ascorbate sensor based on conducting polymer: Poly( N-methylaniline) versus polyaniline</title><author>Brazdžiuvienė, K. ; Jurevičiūtė, I. ; Malinauskas, A.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c376t-8e187badc2ae8626089694bd1412b53dfa9f941ce8818d7683507c24dc6311a43</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2007</creationdate><topic>Analytical chemistry</topic><topic>Ascorbate sensor</topic><topic>Chemistry</topic><topic>Electroanalysis</topic><topic>Electrocatalysis</topic><topic>Electrochemical methods</topic><topic>Exact sciences and technology</topic><topic>Poly( N-methylaniline)</topic><topic>Polyaniline</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Brazdžiuvienė, K.</creatorcontrib><creatorcontrib>Jurevičiūtė, I.</creatorcontrib><creatorcontrib>Malinauskas, A.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Electrochimica acta</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Brazdžiuvienė, K.</au><au>Jurevičiūtė, I.</au><au>Malinauskas, A.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Amperometric ascorbate sensor based on conducting polymer: Poly( N-methylaniline) versus polyaniline</atitle><jtitle>Electrochimica acta</jtitle><date>2007-12-01</date><risdate>2007</risdate><volume>53</volume><issue>2</issue><spage>785</spage><epage>791</epage><pages>785-791</pages><issn>0013-4686</issn><eissn>1873-3859</eissn><coden>ELCAAV</coden><abstract>Electrocatalytic oxidation of ascorbate (vitamin C) at poly(
N-methylaniline) modified electrode has been studied and compared with that proceeding at polyaniline modified sensor. A sigmoid-shaped anodic current transient as a response to addition of ascorbate was found for polyaniline modified electrode in pH-neutral solution, whereas a ‘normal-shaped’ current transient was found to be characteristic for poly(
N-methylaniline) modified electrode. Based on this, a hypothesis on the autocatalytic mechanism for electrochemical oxidation of ascorbate was confirmed. It has been shown that poly(
N-methylaniline) modified electrode can be used as an amperometric ascorbate sensor, operating in slightly acidic or pH-neutral buffer solutions at a controlled potential of 0.1–0.5
V versus Ag/AgCl, and the dependencies of current response on ascorbate concentration, the thickness of a polymer layer, and operating potential have been analyzed.</abstract><cop>Oxford</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.electacta.2007.07.054</doi><tpages>7</tpages></addata></record> |
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| ispartof | Electrochimica acta, 2007-12, Vol.53 (2), p.785-791 |
| issn | 0013-4686 1873-3859 |
| language | eng |
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| source | ScienceDirect Freedom Collection (Elsevier) |
| subjects | Analytical chemistry Ascorbate sensor Chemistry Electroanalysis Electrocatalysis Electrochemical methods Exact sciences and technology Poly( N-methylaniline) Polyaniline |
| title | Amperometric ascorbate sensor based on conducting polymer: Poly( N-methylaniline) versus polyaniline |
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