2007 Fiscal Year Final Research Report Summary
Synthesis of novel rigid-rod polypropellanes
| Project/Area Number |
18550105
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Polymer chemistry
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| Research Institution | Tokyo Institute of Technology |
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Principal Investigator |
TAKASHI ISHEONE Tokyo Institute of Technology, Graduate School of Engineering, Associate Professor (60212883)
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| Project Period (FY) |
2006 – 2007
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| Keywords | Propellanes / Ring-opening polymerization / Poly(1,3-adamantane) / 1,3-Dehydroadamantane / Cationic Polymerization / Alternating Copolymerization / Ring Strain / Thermal Stability |
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| Research Abstract |
Cationic ring-opening polymerizations of [3.3.1] propellane derivatives, 1, 3-dehydroadamantane (1), 5-butyl-1, 3-dehydroadamantane (2), and 6-butyl-6-methyl-1, 3-dehydroadamantane (3) were carried out with CF_3SO_3H in CH_2 Cl_2 at 0℃ for 6-42 h. The central a-bonds in 1-3 were exclusively opened to afford novel poly ([3.3.1]propellane)s, poly(1, 3-adamantane)s, in good to quantitative yields. The resulting poly (2) and poly (3) possessing flexible butyl substituents were soluble in chloroform, THF, and 1, 2-dichlorobenzene, and the degree of polymerization was estimated to be greater than 30, while the poly (1) was hardly soluble in the common organic solvents. All aliphatic poly (1, 3-adamantane) s showed high thermal stability, whose 10% weight loss temperatures were over 430℃. 1, 3-Dehydroadamantanes underwent the spontaneous copolymerization with acrylonitrile or methyl acrylate to afford the alternating copolymer, indicating the high electron-density.
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[Journal Article] Anionic Polymerizations of Oligo(ethylene glycol) Alkyl Ether Methacrylates : Effect of Side Chain Length and ω-Alkyl Group of Side Chain on Cloud Point in Water2008
Author(s)
T., shizone, A., Seki, M., Hagiwara, S., Han, H., Yokoyama, A., Oyane, A., Deffieux, S., Carlotti
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Journal Title
Macromolecules 41
Pages: 2963-2967
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] Potassium Enolates of N2007
Author(s)
T., Ishizone, D., Yashiki, M., Kobayashi, T., Suzuki, M., Ito, S., Nakahama
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Journal Title
N-Dialkylamides as Initiators of Anionic Polymerization J. Polym. Sci. Part A : Polym. Chem 45
Pages: 1260-1271
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] Spontaneous Copolymerization of 12007
Author(s)
T., Ishizone, S.-i., Matsuoka, N., Ogiwara, Y., Uehara, S., Kobayashi
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Journal Title
3-Dehydroadamantane Macromol. Symp
Pages: 249-250, 373-377
Description
「研究成果報告書概要(欧文)」より
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