One-dimensional conjugated carbyne - synthesis and properties

K. Akagi, M. Nishiguchi, H. Shirakawa, Yukio Furukawa, I. Harada

Research output: Contribution to journalArticle

72 Citations (Scopus)

Abstract

Novel synthetic method of one-dimensional conjugated polyyne so-called carbyne is presented. Synthetic strategy employed is a dehydrochlorination of stereospecifically chlorinated polyacetylene, (CHCl)x, synthesized through prolonged FeCl3-doping. In the dehydrochlorination using DBU as a strong base, usage of polar solvent such as DMSO or DMF was confirmed essential. It was elucidated from spectroscopic measurements that the dehydrochlorination proceeds via two steps of trans-elimination of HCl to yield carbyne but not cumulene, and that carbynes formed are composed of polyyne segments with various chain lengths ranging from nC≡C = 10 to 65. Electrical conductivity of the carbyne was enhanced by 107 times upon I2-doping to give a maximum value of 1.6 × 10-1 S/cm-1.

Original languageEnglish
Pages (from-to)557-562
Number of pages6
JournalSynthetic Metals
Volume17
Issue number1-3
DOIs
Publication statusPublished - 1987
Externally publishedYes

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Doping (additives)
Polyacetylenes
polyacetylene
synthesis
Chain length
elimination
Dimethyl Sulfoxide
electrical resistivity
barban
Electric Conductivity

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Polymers and Plastics

Cite this

One-dimensional conjugated carbyne - synthesis and properties. / Akagi, K.; Nishiguchi, M.; Shirakawa, H.; Furukawa, Yukio; Harada, I.

In: Synthetic Metals, Vol. 17, No. 1-3, 1987, p. 557-562.

Research output: Contribution to journalArticle

Akagi, K, Nishiguchi, M, Shirakawa, H, Furukawa, Y & Harada, I 1987, 'One-dimensional conjugated carbyne - synthesis and properties', Synthetic Metals, vol. 17, no. 1-3, pp. 557-562. https://doi.org/10.1016/0379-6779(87)90798-3
Akagi, K. ; Nishiguchi, M. ; Shirakawa, H. ; Furukawa, Yukio ; Harada, I. / One-dimensional conjugated carbyne - synthesis and properties. In: Synthetic Metals. 1987 ; Vol. 17, No. 1-3. pp. 557-562.
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