Flotation Assembly of Large-Area Ultrathin MWCNT Nanofilms for Construction of Bioelectrodes
We report a simple, versatile, and rapid method for the fabrication of optically-transparent large-area carbon nanotube (CNT) films via flotation assembly. After solvent-induced assembly, floating films were transferred to a flat supporting substrate to form conductive and transparent CNT film elect...
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| Format: | Article |
| Language: | English |
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MDPI AG
2017-10-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/7/10/342 |
| _version_ | 1818230544681402368 |
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| author | Andrew J. Gross Jules L. Hammond Michael Holzinger Serge Cosnier |
| author_facet | Andrew J. Gross Jules L. Hammond Michael Holzinger Serge Cosnier |
| author_sort | Andrew J. Gross |
| collection | DOAJ |
| description | We report a simple, versatile, and rapid method for the fabrication of optically-transparent large-area carbon nanotube (CNT) films via flotation assembly. After solvent-induced assembly, floating films were transferred to a flat supporting substrate to form conductive and transparent CNT film electrodes. The resulting electrodes, with uniform 40 ± 20 nm multi-walled CNT (MWCNT) layers, were characterized by electrochemical and microscopy methods. The flotation method does not require specialized thin-film instrumentation and avoids the need for surfactants and pre-oxidized CNTs which can hamper electrochemical performance. A proof-of-concept nanostructured bioelectrode demonstrating high sensitivity for glucose was developed with an electropolymerized poly(pyrene-adamantane) layer for host–guest immobilization of active β-cyclodextrin tagged GOx enzymes. The polymer provides pyrene groups for cross-linking to CNTs and pendant adamantane groups for binding the β-cyclodextrin groups of the tagged enzyme. This demonstration offers a new approach for the preparation of stable and transparent CNT film electrodes with attractive electrochemical properties towards future photobio- and bio-electrochemical fuel cells, electrochemical sensors, and electroanalysis. |
| first_indexed | 2024-12-12T10:36:11Z |
| format | Article |
| id | doaj.art-95b2213ece534907b9d84928001cb407 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-12-12T10:36:11Z |
| publishDate | 2017-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-95b2213ece534907b9d84928001cb4072022-12-22T00:27:11ZengMDPI AGNanomaterials2079-49912017-10-0171034210.3390/nano7100342nano7100342Flotation Assembly of Large-Area Ultrathin MWCNT Nanofilms for Construction of BioelectrodesAndrew J. Gross0Jules L. Hammond1Michael Holzinger2Serge Cosnier3Department of Molecular Chemistry, UMR CNRS-UGA 5250, Université Grenoble Alpes, 38000 Grenoble, FranceDepartment of Molecular Chemistry, UMR CNRS-UGA 5250, Université Grenoble Alpes, 38000 Grenoble, FranceDepartment of Molecular Chemistry, UMR CNRS-UGA 5250, Université Grenoble Alpes, 38000 Grenoble, FranceDepartment of Molecular Chemistry, UMR CNRS-UGA 5250, Université Grenoble Alpes, 38000 Grenoble, FranceWe report a simple, versatile, and rapid method for the fabrication of optically-transparent large-area carbon nanotube (CNT) films via flotation assembly. After solvent-induced assembly, floating films were transferred to a flat supporting substrate to form conductive and transparent CNT film electrodes. The resulting electrodes, with uniform 40 ± 20 nm multi-walled CNT (MWCNT) layers, were characterized by electrochemical and microscopy methods. The flotation method does not require specialized thin-film instrumentation and avoids the need for surfactants and pre-oxidized CNTs which can hamper electrochemical performance. A proof-of-concept nanostructured bioelectrode demonstrating high sensitivity for glucose was developed with an electropolymerized poly(pyrene-adamantane) layer for host–guest immobilization of active β-cyclodextrin tagged GOx enzymes. The polymer provides pyrene groups for cross-linking to CNTs and pendant adamantane groups for binding the β-cyclodextrin groups of the tagged enzyme. This demonstration offers a new approach for the preparation of stable and transparent CNT film electrodes with attractive electrochemical properties towards future photobio- and bio-electrochemical fuel cells, electrochemical sensors, and electroanalysis.https://www.mdpi.com/2079-4991/7/10/342multi-walled carbon nanotubesoptically-transparent electrodephotobioelectrodeelectropolymerizationflotation assemblynanostructured electrodebiosensorbiofuel cell |
| spellingShingle | Andrew J. Gross Jules L. Hammond Michael Holzinger Serge Cosnier Flotation Assembly of Large-Area Ultrathin MWCNT Nanofilms for Construction of Bioelectrodes Nanomaterials multi-walled carbon nanotubes optically-transparent electrode photobioelectrode electropolymerization flotation assembly nanostructured electrode biosensor biofuel cell |
| title | Flotation Assembly of Large-Area Ultrathin MWCNT Nanofilms for Construction of Bioelectrodes |
| title_full | Flotation Assembly of Large-Area Ultrathin MWCNT Nanofilms for Construction of Bioelectrodes |
| title_fullStr | Flotation Assembly of Large-Area Ultrathin MWCNT Nanofilms for Construction of Bioelectrodes |
| title_full_unstemmed | Flotation Assembly of Large-Area Ultrathin MWCNT Nanofilms for Construction of Bioelectrodes |
| title_short | Flotation Assembly of Large-Area Ultrathin MWCNT Nanofilms for Construction of Bioelectrodes |
| title_sort | flotation assembly of large area ultrathin mwcnt nanofilms for construction of bioelectrodes |
| topic | multi-walled carbon nanotubes optically-transparent electrode photobioelectrode electropolymerization flotation assembly nanostructured electrode biosensor biofuel cell |
| url | https://www.mdpi.com/2079-4991/7/10/342 |
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