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Electrochemical and Electrocatalytic Properties of Ferrocene Incorporated in L-Cysteine Self-Assembled Monolayers on a Gold Electrode
The preparation of a gold electrode modified by aminylferrocene (FcAI) covalently bound to L-cysteine self-assembled monolayer (L-Cys/Au SAM) was described, and characterized by cyclic voltammogram (CV) and electrochemical impedance spectroscopy (EIS). In pH 7.4 buffers, FcAI incorporated in L-Cys/A...
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Published in: | Analytical letters 2006-04, Vol.39 (4), p.697-707 |
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container_title | Analytical letters |
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creator | Fang, Bin Deng, Xiang-Hui Kan, Xian-Wen Tao, Hai-Sheng Zhang, Wen-Zhi Li, Mao-Guo |
description | The preparation of a gold electrode modified by aminylferrocene (FcAI) covalently bound to L-cysteine self-assembled monolayer (L-Cys/Au SAM) was described, and characterized by cyclic voltammogram (CV) and electrochemical impedance spectroscopy (EIS). In pH 7.4 buffers, FcAI incorporated in L-Cys/Au SAM gave a pair of well-defined and quasi-reversible cyclic voltammetric peaks at 0.109 vs. saturated calomel eletrode (SCE), characteristic of Fe(II)/Fe(III) redox couples of the Fc. The apparent surface electron transfer rate constant is 6.86 s
−1
at the modified electrode. The immobilized Fc gave an excellent electrocatalytic activity for the oxidation of epinephrine (EP). The catalytic current of EP vs. its concentration has a good linear relation in the range of 1.7×10
−7
-1.0×10
−4
mol/L, with the correlation coefficient of 0.9975 and detection limit of 1.8×10
−8
mol/L. The modified electrode can be used for the determination of EP in practical injection. The method is simple, quick, sensitive, and accurate. |
doi_str_mv | 10.1080/00032710600610915 |
format | article |
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−1
at the modified electrode. The immobilized Fc gave an excellent electrocatalytic activity for the oxidation of epinephrine (EP). The catalytic current of EP vs. its concentration has a good linear relation in the range of 1.7×10
−7
-1.0×10
−4
mol/L, with the correlation coefficient of 0.9975 and detection limit of 1.8×10
−8
mol/L. The modified electrode can be used for the determination of EP in practical injection. The method is simple, quick, sensitive, and accurate.</description><identifier>ISSN: 0003-2719</identifier><identifier>EISSN: 1532-236X</identifier><identifier>DOI: 10.1080/00032710600610915</identifier><language>eng</language><publisher>Taylor & Francis Group</publisher><subject>Electrocatalysis ; epinephrine ; ferrocene ; L-cysteine ; self-assembled monolayer</subject><ispartof>Analytical letters, 2006-04, Vol.39 (4), p.697-707</ispartof><rights>Copyright Taylor & Francis Group, LLC 2006</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c377t-5678ac1a3ad996035f885ec745348862f58c0f8e57f2df1844f1db72d1eb91193</citedby><cites>FETCH-LOGICAL-c377t-5678ac1a3ad996035f885ec745348862f58c0f8e57f2df1844f1db72d1eb91193</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,777,781,27905,27906</link.rule.ids></links><search><creatorcontrib>Fang, Bin</creatorcontrib><creatorcontrib>Deng, Xiang-Hui</creatorcontrib><creatorcontrib>Kan, Xian-Wen</creatorcontrib><creatorcontrib>Tao, Hai-Sheng</creatorcontrib><creatorcontrib>Zhang, Wen-Zhi</creatorcontrib><creatorcontrib>Li, Mao-Guo</creatorcontrib><title>Electrochemical and Electrocatalytic Properties of Ferrocene Incorporated in L-Cysteine Self-Assembled Monolayers on a Gold Electrode</title><title>Analytical letters</title><description>The preparation of a gold electrode modified by aminylferrocene (FcAI) covalently bound to L-cysteine self-assembled monolayer (L-Cys/Au SAM) was described, and characterized by cyclic voltammogram (CV) and electrochemical impedance spectroscopy (EIS). In pH 7.4 buffers, FcAI incorporated in L-Cys/Au SAM gave a pair of well-defined and quasi-reversible cyclic voltammetric peaks at 0.109 vs. saturated calomel eletrode (SCE), characteristic of Fe(II)/Fe(III) redox couples of the Fc. The apparent surface electron transfer rate constant is 6.86 s
−1
at the modified electrode. The immobilized Fc gave an excellent electrocatalytic activity for the oxidation of epinephrine (EP). The catalytic current of EP vs. its concentration has a good linear relation in the range of 1.7×10
−7
-1.0×10
−4
mol/L, with the correlation coefficient of 0.9975 and detection limit of 1.8×10
−8
mol/L. The modified electrode can be used for the determination of EP in practical injection. The method is simple, quick, sensitive, and accurate.</description><subject>Electrocatalysis</subject><subject>epinephrine</subject><subject>ferrocene</subject><subject>L-cysteine</subject><subject>self-assembled monolayer</subject><issn>0003-2719</issn><issn>1532-236X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2006</creationdate><recordtype>article</recordtype><recordid>eNqFkEFrGzEUhEVJoG7SH9CbTrltqydZu1roxRg7DTgkkARyW2TtE1XRSo4kk-4PyP_OBre5hJDTgzfzzcAQ8g3Yd2CK_WCMCd4AqxmrgbUgP5EZSMErLur7IzJ70avJ0H4mX3L-wxhwxWFGnlYeTUnR_MbBGe2pDj39_9NF-7E4Q69T3GEqDjONlq4xTSIGpBfBxLSLSRfsqQt0Uy3HXNBN0g16Wy1yxmHrJ_Eyhuj1iGlKCFTT8-hfe3o8JcdW-4xf_90Tcrde3S5_VZur84vlYlMZ0TSlknWjtAEtdN-2NRPSKiXRNHMp5krV3EplmFUoG8t7C2o-t9BvG94DbluAVpyQs0PuLsWHPebSDS4b9F4HjPvc8VaCkkxNRjgYTYo5J7TdLrlBp7ED1r0M3r0ZfGKaA-OCjWnQjzH5vit69DHZpINx-S3Vlb9lIn9-SIr3i58BaMGZ0g</recordid><startdate>20060401</startdate><enddate>20060401</enddate><creator>Fang, Bin</creator><creator>Deng, Xiang-Hui</creator><creator>Kan, Xian-Wen</creator><creator>Tao, Hai-Sheng</creator><creator>Zhang, Wen-Zhi</creator><creator>Li, Mao-Guo</creator><general>Taylor & Francis Group</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7U5</scope><scope>8FD</scope><scope>L7M</scope></search><sort><creationdate>20060401</creationdate><title>Electrochemical and Electrocatalytic Properties of Ferrocene Incorporated in L-Cysteine Self-Assembled Monolayers on a Gold Electrode</title><author>Fang, Bin ; Deng, Xiang-Hui ; Kan, Xian-Wen ; Tao, Hai-Sheng ; Zhang, Wen-Zhi ; Li, Mao-Guo</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c377t-5678ac1a3ad996035f885ec745348862f58c0f8e57f2df1844f1db72d1eb91193</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2006</creationdate><topic>Electrocatalysis</topic><topic>epinephrine</topic><topic>ferrocene</topic><topic>L-cysteine</topic><topic>self-assembled monolayer</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Fang, Bin</creatorcontrib><creatorcontrib>Deng, Xiang-Hui</creatorcontrib><creatorcontrib>Kan, Xian-Wen</creatorcontrib><creatorcontrib>Tao, Hai-Sheng</creatorcontrib><creatorcontrib>Zhang, Wen-Zhi</creatorcontrib><creatorcontrib>Li, Mao-Guo</creatorcontrib><collection>CrossRef</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Analytical letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Fang, Bin</au><au>Deng, Xiang-Hui</au><au>Kan, Xian-Wen</au><au>Tao, Hai-Sheng</au><au>Zhang, Wen-Zhi</au><au>Li, Mao-Guo</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Electrochemical and Electrocatalytic Properties of Ferrocene Incorporated in L-Cysteine Self-Assembled Monolayers on a Gold Electrode</atitle><jtitle>Analytical letters</jtitle><date>2006-04-01</date><risdate>2006</risdate><volume>39</volume><issue>4</issue><spage>697</spage><epage>707</epage><pages>697-707</pages><issn>0003-2719</issn><eissn>1532-236X</eissn><abstract>The preparation of a gold electrode modified by aminylferrocene (FcAI) covalently bound to L-cysteine self-assembled monolayer (L-Cys/Au SAM) was described, and characterized by cyclic voltammogram (CV) and electrochemical impedance spectroscopy (EIS). In pH 7.4 buffers, FcAI incorporated in L-Cys/Au SAM gave a pair of well-defined and quasi-reversible cyclic voltammetric peaks at 0.109 vs. saturated calomel eletrode (SCE), characteristic of Fe(II)/Fe(III) redox couples of the Fc. The apparent surface electron transfer rate constant is 6.86 s
−1
at the modified electrode. The immobilized Fc gave an excellent electrocatalytic activity for the oxidation of epinephrine (EP). The catalytic current of EP vs. its concentration has a good linear relation in the range of 1.7×10
−7
-1.0×10
−4
mol/L, with the correlation coefficient of 0.9975 and detection limit of 1.8×10
−8
mol/L. The modified electrode can be used for the determination of EP in practical injection. The method is simple, quick, sensitive, and accurate.</abstract><pub>Taylor & Francis Group</pub><doi>10.1080/00032710600610915</doi><tpages>11</tpages></addata></record> |
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subjects | Electrocatalysis epinephrine ferrocene L-cysteine self-assembled monolayer |
title | Electrochemical and Electrocatalytic Properties of Ferrocene Incorporated in L-Cysteine Self-Assembled Monolayers on a Gold Electrode |
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