One-dimensional conjugated carbyne - synthesis and properties

K. Akagi; M. Nishiguchi; H. Shirakawa; Y. Furukawa; I. Harada

doi:10.1016/0379-6779(87)90798-3

One-dimensional conjugated carbyne - synthesis and properties

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

研究成果: Article › 査読

75 被引用数 (Scopus)

抄録

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 n_C≡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.

本文言語	English
ページ（範囲）	557-562
ページ数	6
ジャーナル	Synthetic Metals
巻	17
号	1-3
DOI	https://doi.org/10.1016/0379-6779(87)90798-3
出版ステータス	Published - 1987 1
外部発表	はい

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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10.1016/0379-6779(87)90798-3

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引用スタイル

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title = "One-dimensional conjugated carbyne - synthesis and properties",

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.",

author = "K. Akagi and M. Nishiguchi and H. Shirakawa and Y. Furukawa and I. Harada",

note = "Funding Information: ACKNOWLEDGEMENTS Work at University of Tsukuba was supported by a Grant-in-Aids of special research projects on organic thin films for information conversion (No. 60111003, 61103003) and in part on properties of molecular assemblies (No. 60104001) from the Ministry of Education, Science and Culture.",

year = "1987",

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AU - Akagi, K.

AU - Nishiguchi, M.

AU - Shirakawa, H.

AU - Furukawa, Y.

AU - Harada, I.

N1 - Funding Information: ACKNOWLEDGEMENTS Work at University of Tsukuba was supported by a Grant-in-Aids of special research projects on organic thin films for information conversion (No. 60111003, 61103003) and in part on properties of molecular assemblies (No. 60104001) from the Ministry of Education, Science and Culture.

PY - 1987/1

Y1 - 1987/1

N2 - 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.

AB - 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.

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