Rectangular nanotubes of copper phthalocyanine: Application to a single nanotube transistor

Jin S. Jung, Jin W. Lee, Kihyun Kim, Mi Y. Cho, Seong G. Jo, Jinsoo Joo

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

We report on the structural transformation of organic copper phthalocyanine (CuPc) nanowires to hollowed rectangular nanotubes through the use of a hydrothermal process. The CuPc molecules have been chemically self-assembled into a form of nanowires, through reaction with trifluoroacetic acid. The mechanism of the chemical self-assembly for the CuPc nanowires is studied through analyzing the Fourier transform infrared spectra. After the hydrothermal process, it is observed that the --phase CuPc nanowires are transformed to ß-phase CuPc rectangular nanotubes, with crystallinity in the (-101) direction. From X-ray diffraction patterns, the crystallinity of the CuPc nanowires is enhanced by annealing. The optical and electrical characteristics of the ß-phase crystalline CuPc rectangular nanotubes are compared with those of phase CuPc nanowires, using ultraviolet and visible absorption spectra and current-voltage (I-V) characteristics. From the gate field-dependent I-V characteristics for a single nanowire/nanotube transistor, improved device performance in terms of the charge carrier mobility and the current on and off ratio have been observed in the ß-phase CuPc crystalline rectangular nanotube compared with the self-assembled phase CuPc nanowire, because of the relatively strong interaction between the CuPc molecules.

Original languageEnglish
Pages (from-to)2219-2225
Number of pages7
JournalChemistry of Materials
Volume22
Issue number7
DOIs
Publication statusPublished - 2010 Apr 13

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Nanotubes
Nanowires
Transistors
Copper
Crystalline materials
Trifluoroacetic acid
Trifluoroacetic Acid
Molecules
copper phthalocyanine
Carrier mobility
Charge carriers
Self assembly
Diffraction patterns
Absorption spectra
Fourier transforms
Annealing
Infrared radiation
X ray diffraction
Electric potential

ASJC Scopus subject areas

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

Cite this

Rectangular nanotubes of copper phthalocyanine : Application to a single nanotube transistor. / Jung, Jin S.; Lee, Jin W.; Kim, Kihyun; Cho, Mi Y.; Jo, Seong G.; Joo, Jinsoo.

In: Chemistry of Materials, Vol. 22, No. 7, 13.04.2010, p. 2219-2225.

Research output: Contribution to journalArticle

Jung, Jin S. ; Lee, Jin W. ; Kim, Kihyun ; Cho, Mi Y. ; Jo, Seong G. ; Joo, Jinsoo. / Rectangular nanotubes of copper phthalocyanine : Application to a single nanotube transistor. In: Chemistry of Materials. 2010 ; Vol. 22, No. 7. pp. 2219-2225.
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