Conducting polymer growth in porous sol-gel thin films: Formation of nanoelectrode arrays and mediated electron transfer to sequestered macromolecules

Walter J. Doherty; Neal R. Armstrong; S. Scott Saavedra

doi:10.1021/cm050481r

Conducting polymer growth in porous sol-gel thin films: Formation of nanoelectrode arrays and mediated electron transfer to sequestered macromolecules

Walter J. Doherty, Neal R. Armstrong, S. Scott Saavedra

Chemistry and Biochemistry

Research output: Contribution to journal › Article › peer-review

24 Scopus citations

Abstract

The templated electrochemical growth of poly(3,4-ethylenedioxythiophene) (PEDOT) into porous sol-gel (PSG) films and PEDOT-mediated electron transfer to ferrocene-modified dendrimers encapsulated within these sol-gel matrices, were analyzed. The conditions needed to optimize PEDOT electropolymerization within the PSG films such that barely emergent PEDOT features protrude from a PSG thin film surface, were also described. It was observed that oxidation/reduction of the encapsulated Fc-PAMAM units could be voltammetrically detected after PEDOT growth into the sol-gel film. The results show that up to ca. 20% of these Fc-PAMAM units became electrochemically active, with high rates of electron transfer, when EDTM was conjugated to the Fc-PAMAM dendrimer.

Original language	English (US)
Pages (from-to)	3652-3660
Number of pages	9
Journal	Chemistry of Materials
Volume	17
Issue number	14
DOIs	https://doi.org/10.1021/cm050481r
State	Published - Jul 12 2005

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)
Materials Chemistry

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title = "Conducting polymer growth in porous sol-gel thin films: Formation of nanoelectrode arrays and mediated electron transfer to sequestered macromolecules",

abstract = "The templated electrochemical growth of poly(3,4-ethylenedioxythiophene) (PEDOT) into porous sol-gel (PSG) films and PEDOT-mediated electron transfer to ferrocene-modified dendrimers encapsulated within these sol-gel matrices, were analyzed. The conditions needed to optimize PEDOT electropolymerization within the PSG films such that barely emergent PEDOT features protrude from a PSG thin film surface, were also described. It was observed that oxidation/reduction of the encapsulated Fc-PAMAM units could be voltammetrically detected after PEDOT growth into the sol-gel film. The results show that up to ca. 20% of these Fc-PAMAM units became electrochemically active, with high rates of electron transfer, when EDTM was conjugated to the Fc-PAMAM dendrimer.",

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T1 - Conducting polymer growth in porous sol-gel thin films

T2 - Formation of nanoelectrode arrays and mediated electron transfer to sequestered macromolecules

AU - Doherty, Walter J.

AU - Armstrong, Neal R.

AU - Saavedra, S. Scott

PY - 2005/7/12

Y1 - 2005/7/12

N2 - The templated electrochemical growth of poly(3,4-ethylenedioxythiophene) (PEDOT) into porous sol-gel (PSG) films and PEDOT-mediated electron transfer to ferrocene-modified dendrimers encapsulated within these sol-gel matrices, were analyzed. The conditions needed to optimize PEDOT electropolymerization within the PSG films such that barely emergent PEDOT features protrude from a PSG thin film surface, were also described. It was observed that oxidation/reduction of the encapsulated Fc-PAMAM units could be voltammetrically detected after PEDOT growth into the sol-gel film. The results show that up to ca. 20% of these Fc-PAMAM units became electrochemically active, with high rates of electron transfer, when EDTM was conjugated to the Fc-PAMAM dendrimer.

AB - The templated electrochemical growth of poly(3,4-ethylenedioxythiophene) (PEDOT) into porous sol-gel (PSG) films and PEDOT-mediated electron transfer to ferrocene-modified dendrimers encapsulated within these sol-gel matrices, were analyzed. The conditions needed to optimize PEDOT electropolymerization within the PSG films such that barely emergent PEDOT features protrude from a PSG thin film surface, were also described. It was observed that oxidation/reduction of the encapsulated Fc-PAMAM units could be voltammetrically detected after PEDOT growth into the sol-gel film. The results show that up to ca. 20% of these Fc-PAMAM units became electrochemically active, with high rates of electron transfer, when EDTM was conjugated to the Fc-PAMAM dendrimer.

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Conducting polymer growth in porous sol-gel thin films: Formation of nanoelectrode arrays and mediated electron transfer to sequestered macromolecules

Abstract

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