Three-dimensional (3D) polypyrrole microstructures with high aspect ratios fabricated by localized electropolymerization
SCIE
SCOPUS
- Title
- Three-dimensional (3D) polypyrrole microstructures with high aspect ratios fabricated by localized electropolymerization
- Authors
- Seol, SK; Kim, JT; Je, JH; Hwu, Y; Margaritondo, G
- Date Issued
- 2008-05-13
- Publisher
- AMER CHEMICAL SOC
- 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 E-c (center of the grown structure) and E-e (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.
- Keywords
- CONDUCTING POLYMERS; ELECTRODEPOSITION; RADIOLOGY
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/22783
- DOI
- 10.1021/MA702786G
- ISSN
- 0024-9297
- Article Type
- Article
- Citation
- MACROMOLECULES, vol. 41, no. 9, page. 3071 - 3074, 2008-05-13
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- There are no files associated with this item.
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