Electrochemical properties of carbon nanotubes-hydrogenase conjugates Langmuir-Blodgett films
Identifieur interne : 001426 ( Chine/Analysis ); précédent : 001425; suivant : 001427Electrochemical properties of carbon nanotubes-hydrogenase conjugates Langmuir-Blodgett films
Auteurs : RBID : Pascal:07-0271251Descripteurs français
- Pascal (Inist)
- Propriété électrochimique, Nanotube carbone, Hydrogenase, Enzyme immobilisée, Couche Langmuir Blodgett, Transfert électron, Chronocoulométrie, Nanotube monofeuillet, Nanotube multifeuillet, Couche monomoléculaire mixte, Electrode enzyme, Bioélectrochimie, Microscopie électronique transmission, Biodétecteur, Electrode spécifique, Electrode ITO, Matériau modifié, Morphologie, Structure surface.
English descriptors
- KwdEn :
- Bioelectrochemistry, Biosensor, Carbon nanotubes, Chronocoulometry, Electrochemical properties, Electron transfer, Enzyme electrode, Hydrogenase, Immobilized enzyme, Indium tin oxide electrode, Ion selective electrode, Langmuir Blodgett layer, Mixed monolayer, Modified material, Morphology, Multiwalled nanotube, Singlewalled nanotube, Surface structure, Transmission electron microscopy.
Abstract
We report the preparation of Langmuir-Blodgett (LB) films composed of oxidized carbon nanotubes (CNTs) and hydrogenase (H2ase) conjugates and their electrochemical properties. Both single-walled (SWNTs) and multi-walled CNTs (MWNTs) were used to form mixed monolayers with H2ase on the Tris-HCl subphase surfaces. By using the LB method, the CNTs-H2ase monolayers were transferred onto CaF2 and indium tin oxide (ITO) electrode surfaces. The LB film modified electrodes showed a couple of waves centered at around -500 mV (versus Ag/AgCl), which corresponding to the redox reaction of [4Fe-45]2+/1+ clusters in the H2ase. The current intensity was enhanced after co-assembly with CNTs. Because of the different diameters of CNTs, this current intensity was proportional to the scan rate (ν) for the electrodes modified with the LB films of pure H2ase and SWNTs-H2ase, but to the root of scan rate (ν1/2) for those modified with the MWNTs-H2ase LB film. The products of diffusion coefficient and concentration (D1/2C) increased in the order of pure H2ase, SWNTs-H2ase, and MWNTs-H2ase LB films.
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en" level="a">Electrochemical properties of carbon nanotubes-hydrogenase conjugates Langmuir-Blodgett films</title><author><name sortKey="Liu, Ai Rong" uniqKey="Liu A">Ai-Rong Liu</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Department of Chemistry, Fudan University, 220 Handan Road</s1><s2>Shanghai 200433</s2><s3>CHN</s3><sZ>1 aut.</sZ><sZ>6 aut.</sZ></inist:fA14><country>République populaire de Chine</country><wicri:noRegion>Shanghai 200433</wicri:noRegion></affiliation></author><author><name sortKey="Wakayama, Tatsuki" uniqKey="Wakayama T">Tatsuki Wakayama</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Research Institute of Cell Engineering, National Institute of Advanced Industrial Science and Technology</s1><s2>Amagazaki 661-0974, Hyogo</s2><s3>JPN</s3><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ></inist:fA14><country>Japon</country><wicri:noRegion>Amagazaki 661-0974, Hyogo</wicri:noRegion></affiliation></author><author><name sortKey="Nakamura, Chikashi" uniqKey="Nakamura C">Chikashi Nakamura</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Research Institute of Cell Engineering, National Institute of Advanced Industrial Science and Technology</s1><s2>Amagazaki 661-0974, Hyogo</s2><s3>JPN</s3><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ></inist:fA14><country>Japon</country><wicri:noRegion>Amagazaki 661-0974, Hyogo</wicri:noRegion></affiliation></author><author><name sortKey="Miyake, Jun" uniqKey="Miyake J">Jun Miyake</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Research Institute of Cell Engineering, National Institute of Advanced Industrial Science and Technology</s1><s2>Amagazaki 661-0974, Hyogo</s2><s3>JPN</s3><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ></inist:fA14><country>Japon</country><wicri:noRegion>Amagazaki 661-0974, Hyogo</wicri:noRegion></affiliation></author><author><name sortKey="Zorin, Nikolay A" uniqKey="Zorin N">Nikolay A. Zorin</name><affiliation wicri:level="1"><inist:fA14 i1="03"><s1>Institute of Basic Biological Problems, Russian Academy of Sciences</s1><s2>Pushchino, Moscow Region 142290</s2><s3>RUS</s3><sZ>5 aut.</sZ></inist:fA14><country>Russie</country><wicri:noRegion>Pushchino, Moscow Region 142290</wicri:noRegion></affiliation></author><author><name sortKey="Qian, Dong Jin" uniqKey="Qian D">Dong-Jin Qian</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Department of Chemistry, Fudan University, 220 Handan Road</s1><s2>Shanghai 200433</s2><s3>CHN</s3><sZ>1 aut.</sZ><sZ>6 aut.</sZ></inist:fA14><country>République populaire de Chine</country><wicri:noRegion>Shanghai 200433</wicri:noRegion></affiliation></author></titleStmt><publicationStmt><idno type="inist">07-0271251</idno><date when="2007">2007</date><idno type="stanalyst">PASCAL 07-0271251 INIST</idno><idno type="RBID">Pascal:07-0271251</idno><idno type="wicri:Area/Main/Corpus">007C78</idno><idno type="wicri:Area/Main/Repository">007A99</idno><idno type="wicri:Area/Chine/Extraction">001426</idno></publicationStmt><seriesStmt><idno type="ISSN">0013-4686</idno><title level="j" type="abbreviated">Electrochim. acta</title><title level="j" type="main">Electrochimica acta</title></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Bioelectrochemistry</term><term>Biosensor</term><term>Carbon nanotubes</term><term>Chronocoulometry</term><term>Electrochemical properties</term><term>Electron transfer</term><term>Enzyme electrode</term><term>Hydrogenase</term><term>Immobilized enzyme</term><term>Indium tin oxide electrode</term><term>Ion selective electrode</term><term>Langmuir Blodgett layer</term><term>Mixed monolayer</term><term>Modified material</term><term>Morphology</term><term>Multiwalled nanotube</term><term>Singlewalled nanotube</term><term>Surface structure</term><term>Transmission electron microscopy</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Propriété électrochimique</term><term>Nanotube carbone</term><term>Hydrogenase</term><term>Enzyme immobilisée</term><term>Couche Langmuir Blodgett</term><term>Transfert électron</term><term>Chronocoulométrie</term><term>Nanotube monofeuillet</term><term>Nanotube multifeuillet</term><term>Couche monomoléculaire mixte</term><term>Electrode enzyme</term><term>Bioélectrochimie</term><term>Microscopie électronique transmission</term><term>Biodétecteur</term><term>Electrode spécifique</term><term>Electrode ITO</term><term>Matériau modifié</term><term>Morphologie</term><term>Structure surface</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">We report the preparation of Langmuir-Blodgett (LB) films composed of oxidized carbon nanotubes (CNTs) and hydrogenase (H<sub>2</sub>ase) conjugates and their electrochemical properties. Both single-walled (SWNTs) and multi-walled CNTs (MWNTs) were used to form mixed monolayers with H<sub>2</sub>ase on the Tris-HCl subphase surfaces. By using the LB method, the CNTs-H<sub>2</sub>ase monolayers were transferred onto CaF<sub>2</sub> and indium tin oxide (ITO) electrode surfaces. The LB film modified electrodes showed a couple of waves centered at around -500 mV (versus Ag/AgCl), which corresponding to the redox reaction of [4Fe-45]<sup>2+/1+</sup> clusters in the H<sub>2</sub>ase. The current intensity was enhanced after co-assembly with CNTs. Because of the different diameters of CNTs, this current intensity was proportional to the scan rate (ν) for the electrodes modified with the LB films of pure H<sub>2</sub>ase and SWNTs-H<sub>2</sub>ase, but to the root of scan rate (ν<sup>1/2</sup>) for those modified with the MWNTs-H<sub>2</sub>ase LB film. The products of diffusion coefficient and concentration (D<sup>1/2</sup>C) increased in the order of pure H<sub>2</sub>ase, SWNTs-H<sub>2</sub>ase, and MWNTs-H<sub>2</sub>ase LB films.</div></front></TEI><inist><standard h6="B"><pA><fA01 i1="01" i2="1"><s0>0013-4686</s0></fA01><fA02 i1="01"><s0>ELCAAV</s0></fA02><fA03 i2="1"><s0>Electrochim. acta</s0></fA03><fA05><s2>52</s2></fA05><fA06><s2>9</s2></fA06><fA08 i1="01" i2="1" l="ENG"><s1>Electrochemical properties of carbon nanotubes-hydrogenase conjugates Langmuir-Blodgett films</s1></fA08><fA11 i1="01" i2="1"><s1>LIU (Ai-Rong)</s1></fA11><fA11 i1="02" i2="1"><s1>WAKAYAMA (Tatsuki)</s1></fA11><fA11 i1="03" i2="1"><s1>NAKAMURA (Chikashi)</s1></fA11><fA11 i1="04" i2="1"><s1>MIYAKE (Jun)</s1></fA11><fA11 i1="05" i2="1"><s1>ZORIN (Nikolay A.)</s1></fA11><fA11 i1="06" i2="1"><s1>QIAN (Dong-Jin)</s1></fA11><fA14 i1="01"><s1>Department of Chemistry, Fudan University, 220 Handan Road</s1><s2>Shanghai 200433</s2><s3>CHN</s3><sZ>1 aut.</sZ><sZ>6 aut.</sZ></fA14><fA14 i1="02"><s1>Research Institute of Cell Engineering, National Institute of Advanced Industrial Science and Technology</s1><s2>Amagazaki 661-0974, Hyogo</s2><s3>JPN</s3><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ></fA14><fA14 i1="03"><s1>Institute of Basic Biological Problems, Russian Academy of Sciences</s1><s2>Pushchino, Moscow Region 142290</s2><s3>RUS</s3><sZ>5 aut.</sZ></fA14><fA20><s1>3222-3228</s1></fA20><fA21><s1>2007</s1></fA21><fA23 i1="01"><s0>ENG</s0></fA23><fA43 i1="01"><s1>INIST</s1><s2>1516</s2><s5>354000159734080360</s5></fA43><fA44><s0>0000</s0><s1>© 2007 INIST-CNRS. All rights reserved.</s1></fA44><fA45><s0>37 ref.</s0></fA45><fA47 i1="01" i2="1"><s0>07-0271251</s0></fA47><fA60><s1>P</s1></fA60><fA61><s0>A</s0></fA61><fA64 i1="01" i2="1"><s0>Electrochimica acta</s0></fA64><fA66 i1="01"><s0>GBR</s0></fA66><fC01 i1="01" l="ENG"><s0>We report the preparation of Langmuir-Blodgett (LB) films composed of oxidized carbon nanotubes (CNTs) and hydrogenase (H<sub>2</sub>ase) conjugates and their electrochemical properties. Both single-walled (SWNTs) and multi-walled CNTs (MWNTs) were used to form mixed monolayers with H<sub>2</sub>ase on the Tris-HCl subphase surfaces. By using the LB method, the CNTs-H<sub>2</sub>ase monolayers were transferred onto CaF<sub>2</sub> and indium tin oxide (ITO) electrode surfaces. The LB film modified electrodes showed a couple of waves centered at around -500 mV (versus Ag/AgCl), which corresponding to the redox reaction of [4Fe-45]<sup>2+/1+</sup> clusters in the H<sub>2</sub>ase. The current intensity was enhanced after co-assembly with CNTs. Because of the different diameters of CNTs, this current intensity was proportional to the scan rate (ν) for the electrodes modified with the LB films of pure H<sub>2</sub>ase and SWNTs-H<sub>2</sub>ase, but to the root of scan rate (ν<sup>1/2</sup>) for those modified with the MWNTs-H<sub>2</sub>ase LB film. The products of diffusion coefficient and concentration (D<sup>1/2</sup>C) increased in the order of pure H<sub>2</sub>ase, SWNTs-H<sub>2</sub>ase, and MWNTs-H<sub>2</sub>ase LB films.</s0></fC01><fC02 i1="01" i2="X"><s0>002A03E02</s0></fC02><fC02 i1="02" i2="X"><s0>002A31C09B</s0></fC02><fC02 i1="03" i2="X"><s0>001C01H02A</s0></fC02><fC02 i1="04" i2="X"><s0>215</s0></fC02><fC03 i1="01" i2="X" l="FRE"><s0>Propriété électrochimique</s0><s5>01</s5></fC03><fC03 i1="01" i2="X" l="ENG"><s0>Electrochemical properties</s0><s5>01</s5></fC03><fC03 i1="01" i2="X" l="SPA"><s0>Propiedad electroquímica</s0><s5>01</s5></fC03><fC03 i1="02" i2="3" l="FRE"><s0>Nanotube carbone</s0><s5>02</s5></fC03><fC03 i1="02" i2="3" l="ENG"><s0>Carbon nanotubes</s0><s5>02</s5></fC03><fC03 i1="03" i2="X" l="FRE"><s0>Hydrogenase</s0><s2>FE</s2><s5>03</s5></fC03><fC03 i1="03" i2="X" l="ENG"><s0>Hydrogenase</s0><s2>FE</s2><s5>03</s5></fC03><fC03 i1="03" i2="X" 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