Self-terminated fabrication of electrochemically-gated conducting polymer nanojunctions
In this work, we describe a method of controlling the size of a conducting polymer (CP) junction between one ultramicroelectrode (UME) and a substrate electrode using a scanning electrochemical microscopy (SECM) configuration with a variable resistor connected to the UME tip. The CP is grown by elec...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2020-03-01
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| Series: | Electrochemistry Communications |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1388248120300254 |
| _version_ | 1830373589087420416 |
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| author | Yong Ai Jean-Christophe Lacroix |
| author_facet | Yong Ai Jean-Christophe Lacroix |
| author_sort | Yong Ai |
| collection | DOAJ |
| description | In this work, we describe a method of controlling the size of a conducting polymer (CP) junction between one ultramicroelectrode (UME) and a substrate electrode using a scanning electrochemical microscopy (SECM) configuration with a variable resistor connected to the UME tip. The CP is grown by electro-polymerization from the UME tip to the substrate until contact occurs. Because of the resistor, the effective potential applied to the UME tip decreases dramatically as soon as contact is established between the electrodes. Consequently, polymer growth self-terminates, since the potential is too low to continue monomer oxidation and electropolymerization. In this way, by changing the external resistance it is possible to control the size of the CP junction, as polymer growth stops once the desired junction is established. Nanowire junctions whose conductance is controlled by a few hundred polymer strands can thus be generated in a reproducible way. Keywords: Self-terminated, Nanojunctions, SECM, Electropolymerization, Conducting polymer |
| first_indexed | 2024-12-20T07:22:37Z |
| format | Article |
| id | doaj.art-a045bbe2938e49b5a96d9db1a5fbd19f |
| institution | Directory Open Access Journal |
| issn | 1388-2481 |
| language | English |
| last_indexed | 2024-12-20T07:22:37Z |
| publishDate | 2020-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Electrochemistry Communications |
| spelling | doaj.art-a045bbe2938e49b5a96d9db1a5fbd19f2022-12-21T19:48:39ZengElsevierElectrochemistry Communications1388-24812020-03-01112Self-terminated fabrication of electrochemically-gated conducting polymer nanojunctionsYong Ai0Jean-Christophe Lacroix1College of Chemistry, Nanchang University, Nanchang 330031, People’s Republic of China; Université de Paris, ITODYS, CNRS-UMR 7086, 15 rue J.-A. de Baïf, F-75013 Paris, France; Corresponding authors.Université de Paris, ITODYS, CNRS-UMR 7086, 15 rue J.-A. de Baïf, F-75013 Paris, France; Corresponding authors.In this work, we describe a method of controlling the size of a conducting polymer (CP) junction between one ultramicroelectrode (UME) and a substrate electrode using a scanning electrochemical microscopy (SECM) configuration with a variable resistor connected to the UME tip. The CP is grown by electro-polymerization from the UME tip to the substrate until contact occurs. Because of the resistor, the effective potential applied to the UME tip decreases dramatically as soon as contact is established between the electrodes. Consequently, polymer growth self-terminates, since the potential is too low to continue monomer oxidation and electropolymerization. In this way, by changing the external resistance it is possible to control the size of the CP junction, as polymer growth stops once the desired junction is established. Nanowire junctions whose conductance is controlled by a few hundred polymer strands can thus be generated in a reproducible way. Keywords: Self-terminated, Nanojunctions, SECM, Electropolymerization, Conducting polymerhttp://www.sciencedirect.com/science/article/pii/S1388248120300254 |
| spellingShingle | Yong Ai Jean-Christophe Lacroix Self-terminated fabrication of electrochemically-gated conducting polymer nanojunctions Electrochemistry Communications |
| title | Self-terminated fabrication of electrochemically-gated conducting polymer nanojunctions |
| title_full | Self-terminated fabrication of electrochemically-gated conducting polymer nanojunctions |
| title_fullStr | Self-terminated fabrication of electrochemically-gated conducting polymer nanojunctions |
| title_full_unstemmed | Self-terminated fabrication of electrochemically-gated conducting polymer nanojunctions |
| title_short | Self-terminated fabrication of electrochemically-gated conducting polymer nanojunctions |
| title_sort | self terminated fabrication of electrochemically gated conducting polymer nanojunctions |
| url | http://www.sciencedirect.com/science/article/pii/S1388248120300254 |
| work_keys_str_mv | AT yongai selfterminatedfabricationofelectrochemicallygatedconductingpolymernanojunctions AT jeanchristophelacroix selfterminatedfabricationofelectrochemicallygatedconductingpolymernanojunctions |