Ionically self-assembled polyelectrolyte-based carbon nanotube fibers

Sandeep Razdan, Prabir K. Patra, Swastik Kar, Lijie Ci, Robert Vajtai, Á. Kukovecz, Z. Kónya, I. Kiricsi, Pulickel M. Ajayan

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

We present a process for synthesizing ionically self-assembled polyelectrolyte-complex-based carbon nanotube fibers using a simple noncovalent stabilization of carbon nanotube aqueous dispersions where no surface functionalizations of the nanotubes were necessary. The polyelectrolyte-carbon nanotube composite fibers have mechanical, electrical and chemical properties which make them a choice of materials in applications such as biosensors, chemical electrodes or flexible electronics. The fibers showed reasonable strength and conductivity as high as 45S/cm for single-walled carbon nanotubes and 80-90S/cm for multiwalled carbon nanotubes, due to the presence of an interconnected network of carbon nanotubes embedded inside the fibers. Fiber formationwas demonstrated for a variety of strong polyelectrolyte combinations, including a conductive fiber matrix consisting of poly (ethylenedioxythiophene) (PEDOT), with the presence of nanotubes causing a 2 orders of magnitude increase in the conductivity of the base polymer. The self-assembled polyelectrolyte-carbon nanotube fibers have potential applications in biosensing and flexible electronics.

Original languageEnglish
Pages (from-to)3062-3071
Number of pages10
JournalChemistry of Materials
Volume21
Issue number14
DOIs
Publication statusPublished - Jul 28 2009

Fingerprint

Carbon Nanotubes
Polyelectrolytes
Carbon nanotubes
Fibers
Flexible electronics
Nanotubes
Multiwalled carbon nanotubes (MWCN)
Single-walled carbon nanotubes (SWCN)
Dispersions
Biosensors
Chemical properties
Polymers
Electric properties
Stabilization
Mechanical properties
Electrodes
Composite materials

ASJC Scopus subject areas

  • Materials Chemistry
  • Chemical Engineering(all)
  • Chemistry(all)

Cite this

Razdan, S., Patra, P. K., Kar, S., Ci, L., Vajtai, R., Kukovecz, Á., ... Ajayan, P. M. (2009). Ionically self-assembled polyelectrolyte-based carbon nanotube fibers. Chemistry of Materials, 21(14), 3062-3071. https://doi.org/10.1021/cm803060d

Ionically self-assembled polyelectrolyte-based carbon nanotube fibers. / Razdan, Sandeep; Patra, Prabir K.; Kar, Swastik; Ci, Lijie; Vajtai, Robert; Kukovecz, Á.; Kónya, Z.; Kiricsi, I.; Ajayan, Pulickel M.

In: Chemistry of Materials, Vol. 21, No. 14, 28.07.2009, p. 3062-3071.

Research output: Contribution to journalArticle

Razdan, Sandeep ; Patra, Prabir K. ; Kar, Swastik ; Ci, Lijie ; Vajtai, Robert ; Kukovecz, Á. ; Kónya, Z. ; Kiricsi, I. ; Ajayan, Pulickel M. / Ionically self-assembled polyelectrolyte-based carbon nanotube fibers. In: Chemistry of Materials. 2009 ; Vol. 21, No. 14. pp. 3062-3071.
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