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Article: Three-dimensional (3D) polypyrrole microstructures with high aspect ratios fabricated by localized electropolymerization
Title | Three-dimensional (3D) polypyrrole microstructures with high aspect ratios fabricated by localized electropolymerization |
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Authors | |
Issue Date | 2008 |
Citation | Macromolecules, 2008, v. 41, n. 9, p. 3071-3074 How to Cite? |
Abstract | We present the three-dimensional (3D) growth of polypyrrole (PPy) microstructures with high aspect ratios (HAR) by a localized electropolymerization. The radicals formed by an oxidation of Py monomer is localized on the targeting area due to a confinement of electric field, forming a PPy structure. We found that a reversal point at which the relative field strengths of Ec (center of the grown structure) and Ee (edge) are reversed is a critical factor in determining the growth characteristic of the 3D PPy structure. A porous structure with open and closed pores is produced below the reversal point by the hydrogen bubble trapping in a gap between the microelectrode and the grown structure. Above the reversal point, a structure with dense and uniform features is obtained by a steady supply of monomer in the gap without bubble trapping. © 2008 American Chemical Society. |
Persistent Identifier | http://hdl.handle.net/10722/226683 |
ISSN | 2023 Impact Factor: 5.1 2023 SCImago Journal Rankings: 1.401 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Seol, Seung Kwon | - |
dc.contributor.author | Kim, Ji Tae | - |
dc.contributor.author | Je, Jung Ho | - |
dc.contributor.author | Hwu, Yeukuang | - |
dc.contributor.author | Margaritondo, G. | - |
dc.date.accessioned | 2016-06-29T01:58:18Z | - |
dc.date.available | 2016-06-29T01:58:18Z | - |
dc.date.issued | 2008 | - |
dc.identifier.citation | Macromolecules, 2008, v. 41, n. 9, p. 3071-3074 | - |
dc.identifier.issn | 0024-9297 | - |
dc.identifier.uri | http://hdl.handle.net/10722/226683 | - |
dc.description.abstract | We present the three-dimensional (3D) growth of polypyrrole (PPy) microstructures with high aspect ratios (HAR) by a localized electropolymerization. The radicals formed by an oxidation of Py monomer is localized on the targeting area due to a confinement of electric field, forming a PPy structure. We found that a reversal point at which the relative field strengths of Ec (center of the grown structure) and Ee (edge) are reversed is a critical factor in determining the growth characteristic of the 3D PPy structure. A porous structure with open and closed pores is produced below the reversal point by the hydrogen bubble trapping in a gap between the microelectrode and the grown structure. Above the reversal point, a structure with dense and uniform features is obtained by a steady supply of monomer in the gap without bubble trapping. © 2008 American Chemical Society. | - |
dc.language | eng | - |
dc.relation.ispartof | Macromolecules | - |
dc.title | Three-dimensional (3D) polypyrrole microstructures with high aspect ratios fabricated by localized electropolymerization | - |
dc.type | Article | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1021/ma702786g | - |
dc.identifier.scopus | eid_2-s2.0-44449106200 | - |
dc.identifier.volume | 41 | - |
dc.identifier.issue | 9 | - |
dc.identifier.spage | 3071 | - |
dc.identifier.epage | 3074 | - |
dc.identifier.isi | WOS:000255654100018 | - |
dc.identifier.issnl | 0024-9297 | - |