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

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研究成果: Article › 査読

80 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月
外部発表	はい

ASJC Scopus subject areas

電子材料、光学材料、および磁性材料
凝縮系物理学
材料力学
機械工学
金属および合金
材料化学

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10.1016/0379-6779(87)90798-3

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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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doi = "10.1016/0379-6779(87)90798-3",

language = "English",

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T1 - One-dimensional conjugated carbyne - synthesis and properties

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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One-dimensional conjugated carbyne - synthesis and properties

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