A "grow-in-place" architecture and methodology for electrochemical synthesis of conducting polymer nanoribbon device arrays

Chih Yi Peng, A. Kaan Kalkan, Stephen J. Fonash, Bin Gu, Ayusman Sen

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

Fully enclosed horizontal nanochannels, in a prearranged array on a substrate and with built-in electrical contacts and chemical access regions, were used as growth templates for electrochemical synthesis of conducting polymer nanoribbons. In this "grow-in-place" approach, the nanochannel templates are part of the final array structure and remain after fabrication of the nanoribbons. The built-in electrical contacts, which provide the electrical potential for electrochemical polymerization, also remain and become contacts/interconnects to the array components. The grow-in-place architecture and methodology remove the need for template dissolution, any post-synthesis nanoribbon "grow-and-then-place" manipulation, and any post-synthesis electrical contacting. The fact that the templates are fully enclosed prohibits dendrite formation during growth, ensures precise dimensionality, and gives the encapsulation needed in any real device application. In this report the grow-in-place approach to electrochemical polymerization is used to produce polyaniline nanoribbons. These were found to be fibrils and not tubes and to grow from the central region of the growth-template cross-section and not from the template walls. Two-point and four-point electrical characterization of these polyaniline nanoribbons, obtained using the built-in electrodes, was employed to yield the true polyaniline conductivity and to assess the ohmicity of the contacting approach. Conductivity studies, done as a function of nanoribbon width, show conductivity increases as the width decreases. We also show that our grow-in-place approach may be used for chemical polymerization. However, at least for polyaniline, electrochemical polymerization is superior since it does not suffer from diffusion-limited growth and allows precise placement of the nanoribbons in the growth channel.

Original languageEnglish (US)
Pages (from-to)439-444
Number of pages6
JournalNano Letters
Volume5
Issue number3
DOIs
StatePublished - Mar 1 2005

Fingerprint

Nanoribbons
electrochemical synthesis
Carbon Nanotubes
Conducting polymers
conducting polymers
templates
methodology
Polyaniline
polymerization
Electropolymerization
conductivity
electric contacts
dendrites
synthesis
manipulators
Encapsulation
dissolving
Dissolution
tubes
Polymerization

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Electronic, Optical and Magnetic Materials
  • Chemistry (miscellaneous)

Cite this

Peng, Chih Yi ; Kalkan, A. Kaan ; Fonash, Stephen J. ; Gu, Bin ; Sen, Ayusman. / A "grow-in-place" architecture and methodology for electrochemical synthesis of conducting polymer nanoribbon device arrays. In: Nano Letters. 2005 ; Vol. 5, No. 3. pp. 439-444.
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abstract = "Fully enclosed horizontal nanochannels, in a prearranged array on a substrate and with built-in electrical contacts and chemical access regions, were used as growth templates for electrochemical synthesis of conducting polymer nanoribbons. In this {"}grow-in-place{"} approach, the nanochannel templates are part of the final array structure and remain after fabrication of the nanoribbons. The built-in electrical contacts, which provide the electrical potential for electrochemical polymerization, also remain and become contacts/interconnects to the array components. The grow-in-place architecture and methodology remove the need for template dissolution, any post-synthesis nanoribbon {"}grow-and-then-place{"} manipulation, and any post-synthesis electrical contacting. The fact that the templates are fully enclosed prohibits dendrite formation during growth, ensures precise dimensionality, and gives the encapsulation needed in any real device application. In this report the grow-in-place approach to electrochemical polymerization is used to produce polyaniline nanoribbons. These were found to be fibrils and not tubes and to grow from the central region of the growth-template cross-section and not from the template walls. Two-point and four-point electrical characterization of these polyaniline nanoribbons, obtained using the built-in electrodes, was employed to yield the true polyaniline conductivity and to assess the ohmicity of the contacting approach. Conductivity studies, done as a function of nanoribbon width, show conductivity increases as the width decreases. We also show that our grow-in-place approach may be used for chemical polymerization. However, at least for polyaniline, electrochemical polymerization is superior since it does not suffer from diffusion-limited growth and allows precise placement of the nanoribbons in the growth channel.",
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A "grow-in-place" architecture and methodology for electrochemical synthesis of conducting polymer nanoribbon device arrays. / Peng, Chih Yi; Kalkan, A. Kaan; Fonash, Stephen J.; Gu, Bin; Sen, Ayusman.

In: Nano Letters, Vol. 5, No. 3, 01.03.2005, p. 439-444.

Research output: Contribution to journalArticle

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