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Updated: Jul 4, 2026
A Polyaniline-based Sensor of Nucleic Acids
Published on: November 1, 2016
Tubular-shaped nanocarbons prepared from polyaniline synthesized by a self-assembly process and their electrical
Mutsumasa Kyotani1, Hiromasa Goto, Kiyoshi Suda
1Tsukuba Research Center for Interdisciplinary Materials Science, University of Tsukuba, Ibaraki 305-8571, Japan.
Abstract:
A tubular-shaped polyaniline less than 5 microm in length and 170 nm in outer diameter was synthesized by a self-assembly process using D-camphorsulfonic acid as a dopant. A tubular-shaped nanocarbon was prepared from the tubular-shaped polyaniline by means of pyrolysis at 1000 degrees C in argon gas. The structural and electrical properties of the resultant tubular-shaped nanocarbons were investigated using Raman scattering spectrum, X-ray diffraction measurements, scanning and transmission electron microscopes, and a low resistivity meter. The tubular-shaped nanocarbons are very short in length and are an amorphous state. The short length and amorphous tubular-shaped nanocarbon were crystallized to some extent by heat-treatment at 2600 degrees C. The tubular-shaped nanocarbons mentioned in this work are appropriate for mass production, compared to the well-known multi-walled carbon nanotubes. The electrical conductively of the tubular-shaped polyaniline was remarkably improved by the carbonization and was enhanced by the heat-treatment.
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