Diameter-Controlled Synthesis of Polyaniline Nanofibers

Summary

Various diameters of polyaniline (PANI) nanofibers were easily made by varying the sweep rate in the electrochemical polymerization of the aniline monomer. At a sweep rate of 5 mV/s, the PANI nanofibers have an average diameter of 450 nm with a median of 440 nm. The fibers are short, on the order of a few microns in length, and exhibit a branched geometry. Increasing the sweep rate to 50 mV/s produced longer nanofibers with a smaller average diameter of 200 nm. Nanofibers synthesized at 100 mV/s were noted to be smaller with an average and median diameter of 100 nm. These results illustrate the ease in which the morphology of nanostructured PANI can be altered and indicate that the method has the potential to create multi-diameter fibers or mixed-morphology materials.

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Correspondence to Alan R. Hopkins.

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Anderson, R.E., Ostrowski, A.D., Gran, D.E. et al. Diameter-Controlled Synthesis of Polyaniline Nanofibers . Polym. Bull. 61, 563–568 (2008). https://doi.org/10.1007/s00289-008-0983-x

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Keywords

  • PANI
  • Sweep Rate
  • Interdigitated Electrode
  • PANI Nanofibers
  • Nanofiber Diameter