Optically Transparent Thin-Film Electrode Chip for Spectroelectrochemical Sensing
A novel microfabricated optically transparent thin-film electrode chip for fluorescence and absorption spectroelectrochemistry has been developed. The working electrode was composed of indium tin oxide (ITO); the quasi-reference and auxiliary electrodes were composed of platinum. The stability of th...
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| Veröffentlicht in: | Analytical chemistry (Washington) 2017-07, Vol.89 (14), p.7324-7332 |
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| creator | Branch, Shirmir D Lines, Amanda M Lynch, John Bello, Job M Heineman, William R Bryan, Samuel A |
| description | A novel microfabricated optically transparent thin-film electrode chip for fluorescence and absorption spectroelectrochemistry has been developed. The working electrode was composed of indium tin oxide (ITO); the quasi-reference and auxiliary electrodes were composed of platinum. The stability of the platinum quasi-reference electrode was improved by coating it with a planar, solid state Ag/AgCl layer. The Ag/AgCl reference was characterized with scanning electron microscopy and energy-dispersive X-ray spectroscopy. Cyclic voltammetry measurements showed that the electrode chip was comparable to a standard electrochemical cell. Randles-Sevcik analysis of 10 mM K3[Fe(CN)6] in 0.1 M KCl using the electrode chip gave a diffusion coefficient of 1.59 × 10–6 cm2/s, in comparison to the value of 2.38 × 10–6 cm2/s using a standard electrochemical cell. By using the electrode chip in an optically transparent thin-layer electrode (OTTLE), the absorption based spectroelectrochemical modulation of [Fe(CN)6]3–/4– was demonstrated, as well as the fluorescence based modulation of [Ru(bpy)3]2+/3+. For the fluorescence spectroelectrochemical determination of [Ru(bpy)3]2+, a detection limit of 36 nM was observed. |
| doi_str_mv | 10.1021/acs.analchem.7b00258 |
| format | Article |
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(PNNL), Richland, WA (United States)</creatorcontrib><description>A novel microfabricated optically transparent thin-film electrode chip for fluorescence and absorption spectroelectrochemistry has been developed. The working electrode was composed of indium tin oxide (ITO); the quasi-reference and auxiliary electrodes were composed of platinum. The stability of the platinum quasi-reference electrode was improved by coating it with a planar, solid state Ag/AgCl layer. The Ag/AgCl reference was characterized with scanning electron microscopy and energy-dispersive X-ray spectroscopy. Cyclic voltammetry measurements showed that the electrode chip was comparable to a standard electrochemical cell. Randles-Sevcik analysis of 10 mM K3[Fe(CN)6] in 0.1 M KCl using the electrode chip gave a diffusion coefficient of 1.59 × 10–6 cm2/s, in comparison to the value of 2.38 × 10–6 cm2/s using a standard electrochemical cell. By using the electrode chip in an optically transparent thin-layer electrode (OTTLE), the absorption based spectroelectrochemical modulation of [Fe(CN)6]3–/4– was demonstrated, as well as the fluorescence based modulation of [Ru(bpy)3]2+/3+. For the fluorescence spectroelectrochemical determination of [Ru(bpy)3]2+, a detection limit of 36 nM was observed.</description><identifier>ISSN: 0003-2700</identifier><identifier>EISSN: 1520-6882</identifier><identifier>DOI: 10.1021/acs.analchem.7b00258</identifier><identifier>PMID: 28605581</identifier><language>eng</language><publisher>United States: American Chemical Society</publisher><subject>Absorption ; Ag/AgCl ; Chemistry ; Coated electrodes ; Diffusion coefficient ; Electrochemistry ; Electrodes ; Electron microscopy ; Fluorescence ; Indium tin oxides ; Iron ; Modulation ; optically transparent thin layer electrode ; Optics ; Platinum ; Potassium chloride ; reference electrode ; Ruthenium ; Scanning electron microscopy ; Solid state ; Spectroelectrochemistry ; Spectroscopy ; Thin films ; Tin ; X-ray spectroscopy</subject><ispartof>Analytical chemistry (Washington), 2017-07, Vol.89 (14), p.7324-7332</ispartof><rights>Copyright © 2017 American Chemical Society</rights><rights>Copyright American Chemical Society Jul 18, 2017</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a506t-5601173a6beb1c747bc2a2f839d032edf310158091a3680df1eec547545ad2fa3</citedby><cites>FETCH-LOGICAL-a506t-5601173a6beb1c747bc2a2f839d032edf310158091a3680df1eec547545ad2fa3</cites><orcidid>0000-0002-8826-0880 ; 0000-0003-2428-5445 ; 0000000324285445 ; 0000000288260880</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://pubs.acs.org/doi/pdf/10.1021/acs.analchem.7b00258$$EPDF$$P50$$Gacs$$H</linktopdf><linktohtml>$$Uhttps://pubs.acs.org/doi/10.1021/acs.analchem.7b00258$$EHTML$$P50$$Gacs$$H</linktohtml><link.rule.ids>230,314,780,784,885,2763,27075,27923,27924,56737,56787</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/28605581$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink><backlink>$$Uhttps://www.osti.gov/biblio/1374640$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Branch, Shirmir D</creatorcontrib><creatorcontrib>Lines, Amanda M</creatorcontrib><creatorcontrib>Lynch, John</creatorcontrib><creatorcontrib>Bello, Job M</creatorcontrib><creatorcontrib>Heineman, William R</creatorcontrib><creatorcontrib>Bryan, Samuel A</creatorcontrib><creatorcontrib>Pacific Northwest National Lab. (PNNL), Richland, WA (United States)</creatorcontrib><title>Optically Transparent Thin-Film Electrode Chip for Spectroelectrochemical Sensing</title><title>Analytical chemistry (Washington)</title><addtitle>Anal. Chem</addtitle><description>A novel microfabricated optically transparent thin-film electrode chip for fluorescence and absorption spectroelectrochemistry has been developed. The working electrode was composed of indium tin oxide (ITO); the quasi-reference and auxiliary electrodes were composed of platinum. The stability of the platinum quasi-reference electrode was improved by coating it with a planar, solid state Ag/AgCl layer. The Ag/AgCl reference was characterized with scanning electron microscopy and energy-dispersive X-ray spectroscopy. Cyclic voltammetry measurements showed that the electrode chip was comparable to a standard electrochemical cell. Randles-Sevcik analysis of 10 mM K3[Fe(CN)6] in 0.1 M KCl using the electrode chip gave a diffusion coefficient of 1.59 × 10–6 cm2/s, in comparison to the value of 2.38 × 10–6 cm2/s using a standard electrochemical cell. By using the electrode chip in an optically transparent thin-layer electrode (OTTLE), the absorption based spectroelectrochemical modulation of [Fe(CN)6]3–/4– was demonstrated, as well as the fluorescence based modulation of [Ru(bpy)3]2+/3+. For the fluorescence spectroelectrochemical determination of [Ru(bpy)3]2+, a detection limit of 36 nM was observed.</description><subject>Absorption</subject><subject>Ag/AgCl</subject><subject>Chemistry</subject><subject>Coated electrodes</subject><subject>Diffusion coefficient</subject><subject>Electrochemistry</subject><subject>Electrodes</subject><subject>Electron microscopy</subject><subject>Fluorescence</subject><subject>Indium tin oxides</subject><subject>Iron</subject><subject>Modulation</subject><subject>optically transparent thin layer electrode</subject><subject>Optics</subject><subject>Platinum</subject><subject>Potassium chloride</subject><subject>reference electrode</subject><subject>Ruthenium</subject><subject>Scanning electron microscopy</subject><subject>Solid state</subject><subject>Spectroelectrochemistry</subject><subject>Spectroscopy</subject><subject>Thin films</subject><subject>Tin</subject><subject>X-ray spectroscopy</subject><issn>0003-2700</issn><issn>1520-6882</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><recordid>eNp9kUtLxDAUhYMoOj7-gUjRjZuON2mTtksZfIEg4rgOaXrrRNq0Jp3F_HtTOyq4cHUh9zvnHnIIOaUwp8DoldJ-rqxq9ArbeVYCMJ7vkBnlDGKR52yXzAAgiVkGcEAOvX8HoBSo2CcHLBfAeU5n5PmpH4xWTbOJlk5Z3yuHdoiWK2PjW9O00U2DenBdhdFiZfqo7lz00n894bQZ748O0Qtab-zbMdmrVePxZDuPyOvtzXJxHz8-3T0srh9jxUEMMRchTZYoUWJJdZZmpWaK1XlSVJAwrOokZOU5FFQlIoeqpoiapxlPuapYrZIjcj75dn4w0mszoF7pztqQStIkS0UKAbqcoN51H2v0g2yN19g0ymK39pIWUDAQkLGAXvxB37u1Cx88UikUAlLggUonSrvOe4e17J1pldtICnLsRYZe5HcvcttLkJ1tzddli9WP6LuIAMAEjPLfw_95fgIct5tB</recordid><startdate>20170718</startdate><enddate>20170718</enddate><creator>Branch, Shirmir D</creator><creator>Lines, Amanda M</creator><creator>Lynch, John</creator><creator>Bello, Job M</creator><creator>Heineman, William R</creator><creator>Bryan, Samuel A</creator><general>American Chemical Society</general><general>American Chemical Society (ACS)</general><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QF</scope><scope>7QO</scope><scope>7QQ</scope><scope>7SC</scope><scope>7SE</scope><scope>7SP</scope><scope>7SR</scope><scope>7TA</scope><scope>7TB</scope><scope>7TM</scope><scope>7U5</scope><scope>7U7</scope><scope>7U9</scope><scope>8BQ</scope><scope>8FD</scope><scope>C1K</scope><scope>F28</scope><scope>FR3</scope><scope>H8D</scope><scope>H8G</scope><scope>H94</scope><scope>JG9</scope><scope>JQ2</scope><scope>KR7</scope><scope>L7M</scope><scope>L~C</scope><scope>L~D</scope><scope>P64</scope><scope>7X8</scope><scope>OTOTI</scope><orcidid>https://orcid.org/0000-0002-8826-0880</orcidid><orcidid>https://orcid.org/0000-0003-2428-5445</orcidid><orcidid>https://orcid.org/0000000324285445</orcidid><orcidid>https://orcid.org/0000000288260880</orcidid></search><sort><creationdate>20170718</creationdate><title>Optically Transparent Thin-Film Electrode Chip for Spectroelectrochemical Sensing</title><author>Branch, Shirmir D ; Lines, Amanda M ; Lynch, John ; Bello, Job M ; Heineman, William R ; Bryan, Samuel A</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a506t-5601173a6beb1c747bc2a2f839d032edf310158091a3680df1eec547545ad2fa3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>Absorption</topic><topic>Ag/AgCl</topic><topic>Chemistry</topic><topic>Coated electrodes</topic><topic>Diffusion coefficient</topic><topic>Electrochemistry</topic><topic>Electrodes</topic><topic>Electron microscopy</topic><topic>Fluorescence</topic><topic>Indium tin oxides</topic><topic>Iron</topic><topic>Modulation</topic><topic>optically transparent thin layer electrode</topic><topic>Optics</topic><topic>Platinum</topic><topic>Potassium chloride</topic><topic>reference electrode</topic><topic>Ruthenium</topic><topic>Scanning electron microscopy</topic><topic>Solid state</topic><topic>Spectroelectrochemistry</topic><topic>Spectroscopy</topic><topic>Thin films</topic><topic>Tin</topic><topic>X-ray spectroscopy</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Branch, Shirmir D</creatorcontrib><creatorcontrib>Lines, Amanda M</creatorcontrib><creatorcontrib>Lynch, John</creatorcontrib><creatorcontrib>Bello, Job M</creatorcontrib><creatorcontrib>Heineman, William R</creatorcontrib><creatorcontrib>Bryan, Samuel A</creatorcontrib><creatorcontrib>Pacific Northwest National Lab. 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(PNNL), Richland, WA (United States)</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Optically Transparent Thin-Film Electrode Chip for Spectroelectrochemical Sensing</atitle><jtitle>Analytical chemistry (Washington)</jtitle><addtitle>Anal. Chem</addtitle><date>2017-07-18</date><risdate>2017</risdate><volume>89</volume><issue>14</issue><spage>7324</spage><epage>7332</epage><pages>7324-7332</pages><issn>0003-2700</issn><eissn>1520-6882</eissn><abstract>A novel microfabricated optically transparent thin-film electrode chip for fluorescence and absorption spectroelectrochemistry has been developed. The working electrode was composed of indium tin oxide (ITO); the quasi-reference and auxiliary electrodes were composed of platinum. The stability of the platinum quasi-reference electrode was improved by coating it with a planar, solid state Ag/AgCl layer. The Ag/AgCl reference was characterized with scanning electron microscopy and energy-dispersive X-ray spectroscopy. Cyclic voltammetry measurements showed that the electrode chip was comparable to a standard electrochemical cell. Randles-Sevcik analysis of 10 mM K3[Fe(CN)6] in 0.1 M KCl using the electrode chip gave a diffusion coefficient of 1.59 × 10–6 cm2/s, in comparison to the value of 2.38 × 10–6 cm2/s using a standard electrochemical cell. By using the electrode chip in an optically transparent thin-layer electrode (OTTLE), the absorption based spectroelectrochemical modulation of [Fe(CN)6]3–/4– was demonstrated, as well as the fluorescence based modulation of [Ru(bpy)3]2+/3+. For the fluorescence spectroelectrochemical determination of [Ru(bpy)3]2+, a detection limit of 36 nM was observed.</abstract><cop>United States</cop><pub>American Chemical Society</pub><pmid>28605581</pmid><doi>10.1021/acs.analchem.7b00258</doi><tpages>9</tpages><orcidid>https://orcid.org/0000-0002-8826-0880</orcidid><orcidid>https://orcid.org/0000-0003-2428-5445</orcidid><orcidid>https://orcid.org/0000000324285445</orcidid><orcidid>https://orcid.org/0000000288260880</orcidid></addata></record> |
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| source | American Chemical Society Journals |
| subjects | Absorption Ag/AgCl Chemistry Coated electrodes Diffusion coefficient Electrochemistry Electrodes Electron microscopy Fluorescence Indium tin oxides Iron Modulation optically transparent thin layer electrode Optics Platinum Potassium chloride reference electrode Ruthenium Scanning electron microscopy Solid state Spectroelectrochemistry Spectroscopy Thin films Tin X-ray spectroscopy |
| title | Optically Transparent Thin-Film Electrode Chip for Spectroelectrochemical Sensing |
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