Poly(3-hexylthiophene) nanotubes with tunable aspect ratios and charge transport properties

Long Biao Huang, Zong Xiang Xu, Xianfeng Chen, Wei Tian, Su Ting Han, Ye Zhou, Jia Ju Xu, Xiong Bo Yang, Vellaisamy A.L. Roy*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract / Description of output

Regioregular poly(3-hexylthiophene) (RR-P3HT) nanotubes (200 nm in diameter) with tunable aspect ratios from 25 to 300 were prepared using a polymer melt wetting technique. Aspect-ratio tunability was achieved by controlling the wetting behavior of RR-P3HT melts in a template. The crystallinity and chain orientation of RR-P3HT were studied by grazing incidence X-ray diffraction, wide-angle X-ray diffraction, and polarized photoluminescence spectroscopy. Results suggest that RR-P3HT chains in the lamellar structure prefer to be perpendicular to the axis of the RR-P3HT nanotubes, forming a face-on conformation in the RR-P3HT nanotubes that leads to increased carrier mobility of RR-P3HT. Field-effect transistors were fabricated based on a single RR-P3HT nanotube and showed a carrier mobility of 0.14 ± 0.02 cm2/V·s.

Original languageEnglish
Pages (from-to)11874-11881
Number of pages8
JournalACS Applied Materials and Interfaces
Volume6
Issue number15
DOIs
Publication statusPublished - 13 Aug 2014

Keywords / Materials (for Non-textual outputs)

  • AAO
  • charge transport properties
  • field-effect transistor
  • nanotube array
  • RR-P3HT
  • tunable aspect ratios

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