Ziegler-Natta와 Metathesis 촉매에 의한 측쇄형 액정폴리아세틸렌 유도체의 합성

오세용; Akagi K; Shirakawa H

HWAHAK KONGHAK, Vol.34, No.1, 70-76, February, 1996

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Ziegler-Natta와 Metathesis 촉매에 의한 측쇄형 액정폴리아세틸렌 유도체의 합성

Synthesis of Side-Chain Liquid Crystalline Polyacetylene Derivatives by Ziegler-Natta and Metathesis Catalysts

오세용, Akagi K, Shirakawa H

초록

1-[p-(trans-4’-alkylcyclohexyl)phenoxy]alkyne, 5-p-pentylbiphenoxy-1-pentyne과 같은 액정 moiety를 갖는 새로운 치환아세틸렌을 합성하여, Ziegler-Natta와 metathesis 촉매로 중합하였다. GPC, IR, NMR, UV-Visible 분광학 장치를 사용하여 고분자의 분자량 및 구조를 조사하였다. 특히 Ziegler-Natta 촉매인 Fe(acac)₃-AlEt₃은 중량평균분자량이 2-3×10⁶의 고분자량과 입체규칙성이 뛰어난 cis형 구조의 고분자를 생성하였다. 모든 고분자는 벤젠, 클로로포름, THF와 같은 유기용매에 용해되었다.

We have synthesized novel mono-substituted acetylenes with a liquid crystalline moiety such as 1-[p-(trans-4’-alkylcyclohexyl)phenoxy]alkynes and 5-p-pentylbiphenoxy-1-pentyne and then polymerized them with Zieg-ler-Natta and metathesis catalysts. Molecular weights and structure of these polymers were investigated by using GPC, IR, NMR and UV-visible spectroscopic measurements. Especially, Ziegler-Natta catalyst[Fe(acac)₃-AlEt₃] pro-duced an extremely high molecular weight polymer of M_w=2-3×10⁶ and cis form polymer with a high stereoregularity. All polymers were soluble in organic solvents such as benzene, chloroform and THF.

Keywords:Mono-substituted Polyacetylene;Ziegler-Natta Catalyst;Metathesis Catalyst;Liquid Crystalline;Solubility;Polymer Structure

[References]

Naarmann H, Theophilou N, Synth. Met., 22, 1 (1987)
Akagi K, Suezaki S, Shirakawa S, Kyotani H, Shimomura M, Tanabe Y, Synth. Met., 28, D1 (1989)
Tsukamoto J, Takahashi A, Kawasaki K, Jpn. J. Appl. Phys., 29, 125 (1990)
Oh SY, Akagi K, Shirakawa H, Synth. Met., 32, D1 (1989)
Wei Y, Hsueh KF, Jang GW, Macromolecules, 27(2), 518 (1994)
Bauerle P, Gotz G, hiller M, Scheib S, Fischer T, Synth. Met., 61, 71 (1993)
Masuda T, Higashimura T, Adv. Chem. Ser., 224, 35 (1990)
Costa G, "In Comprehensive Polymer Science," G. Allen, Ed. pergamon, Oxford (1989)
Oh SY, Ezaki R, Akagi K, Shirakawa H, J. Polym. Sci. A: Polym. Chem., 31, 2977 (1993)
Simonescu CI, Percec V, Prog. Polym. Sci., 8, 133 (1982)
Oh SY, Oguri F, Akagi K, Shirikawa H, J. Polym. Sci. A: Polym. Chem., 31, 781 (1993)
Akagi K, Hashimoto D, Shirakawa H, Isoya J, Synth. Met., 40, 197 (1991)
Oh SY, Akagi K, Shirakawa H, HWAHAK KONGHAK, presentation

[Referenced By]

[1] Naarmann H, Theophilou N, Synth. Met., 22, 1 (1987)

[2] Akagi K, Suezaki S, Shirakawa S, Kyotani H, Shimomura M, Tanabe Y, Synth. Met., 28, D1 (1989)

[3] Tsukamoto J, Takahashi A, Kawasaki K, Jpn. J. Appl. Phys., 29, 125 (1990)

[4] Oh SY, Akagi K, Shirakawa H, Synth. Met., 32, D1 (1989)

[5] Wei Y, Hsueh KF, Jang GW, Macromolecules, 27(2), 518 (1994)

[6] Bauerle P, Gotz G, hiller M, Scheib S, Fischer T, Synth. Met., 61, 71 (1993)

[7] Masuda T, Higashimura T, Adv. Chem. Ser., 224, 35 (1990)

[8] Costa G, "In Comprehensive Polymer Science," G. Allen, Ed. pergamon, Oxford (1989)

[9] Oh SY, Ezaki R, Akagi K, Shirakawa H, J. Polym. Sci. A: Polym. Chem., 31, 2977 (1993)

[10] Simonescu CI, Percec V, Prog. Polym. Sci., 8, 133 (1982)

[11] Oh SY, Oguri F, Akagi K, Shirikawa H, J. Polym. Sci. A: Polym. Chem., 31, 781 (1993)

[12] Akagi K, Hashimoto D, Shirakawa H, Isoya J, Synth. Met., 40, 197 (1991)

[13] Oh SY, Akagi K, Shirakawa H, HWAHAK KONGHAK, presentation