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Article: Three-dimensional (3D) polypyrrole microstructures with high aspect ratios fabricated by localized electropolymerization

TitleThree-dimensional (3D) polypyrrole microstructures with high aspect ratios fabricated by localized electropolymerization
Authors
Issue Date2008
Citation
Macromolecules, 2008, v. 41, n. 9, p. 3071-3074 How to Cite?
AbstractWe 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 Identifierhttp://hdl.handle.net/10722/226683
ISSN
2015 Impact Factor: 5.554
2015 SCImago Journal Rankings: 2.497

 

DC FieldValueLanguage
dc.contributor.authorSeol, Seung Kwon-
dc.contributor.authorKim, Ji Tae-
dc.contributor.authorJe, Jung Ho-
dc.contributor.authorHwu, Yeukuang-
dc.contributor.authorMargaritondo, G.-
dc.date.accessioned2016-06-29T01:58:18Z-
dc.date.available2016-06-29T01:58:18Z-
dc.date.issued2008-
dc.identifier.citationMacromolecules, 2008, v. 41, n. 9, p. 3071-3074-
dc.identifier.issn0024-9297-
dc.identifier.urihttp://hdl.handle.net/10722/226683-
dc.description.abstractWe 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.languageeng-
dc.relation.ispartofMacromolecules-
dc.titleThree-dimensional (3D) polypyrrole microstructures with high aspect ratios fabricated by localized electropolymerization-
dc.typeArticle-
dc.description.natureLink_to_subscribed_fulltext-
dc.identifier.doi10.1021/ma702786g-
dc.identifier.scopuseid_2-s2.0-44449106200-
dc.identifier.volume41-
dc.identifier.issue9-
dc.identifier.spage3071-
dc.identifier.epage3074-

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