| Item type |
学術雑誌論文 / Journal Article.(1) |
| 公開日 |
2019-07-29 |
| 書誌情報 |
en : Polymers
巻 11,
号 1,
p. 94,
発行日 2019-01-08
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| タイトル |
|
|
タイトル |
Methoxy-Group Control of Helical Pitch in Stereoregular Poly(2-ethynylmethoxynaphthalene) Prepared by Rhodium Complex Catalyst |
|
言語 |
en |
| 言語 |
|
|
言語 |
eng |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
conjugated polymer |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
polyacetylene |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Rh-complex catalyst |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
helix |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
helical pitch |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
color |
| 資源タイプ |
|
|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
journal article |
| アクセス権 |
|
|
アクセス権 |
open access |
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アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 著者 |
馬渡, 康輝
吉田, 嘉晃
HUANG, Kai
田畑, 昌祥
|
| 室蘭工業大学研究者データベースへのリンク |
|
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表示名 |
馬渡 康輝（MAWATARI Yasuteru） |
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URL |
http://rdsoran.muroran-it.ac.jp/html/100000132_ja.html |
| 抄録 |
|
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内容記述タイプ |
Abstract |
|
内容記述 |
The position of the methoxy group in a poly(n-methoxy-2-ethynylnaphthalene) (PnMeO2EN) was found to control the helical pitch of the π-conjugated polymer in the solid state. These PnMeO2ENs were stereoregularly synthesized using an Rh-complex catalyst in ethanol or toluene as the solvent. The helical structure in the solid phase was confirmed by conventional analytical methods, namely diffuse reflective ultraviolet–visible light (UV–Vis) and Raman spectroscopies, X-ray diffraction, and 13C cross-polarization magic angle spinning NMR spectroscopy, together with molecular mechanics calculations, because the as obtained polymers were insoluble in common solvents. The color of poly(6-methoxy-2-ethynylnaphthalene) (P6MeO2EN) (yellow or red) depended on the polymerization solvent, whereas no such dependency was observed for the yellow-colored P7MeO2EN and P8MeO2EN. The helical structures energetically optimized by molecular mechanics indicate that the red- and yellow-colored P6MeO2ENs form contracted and stretched helices, respectively. Due to the relatively unconstrained rotations of the 6-methoxynaphthyl moieties, the methoxy groups in P6MeO2EN are less sterically hindered along the helical axis. On the contrary, P7MeO2EN and P8MeO2EN have stretched helices due to the considerable steric hindrance imparted by their methoxy groups. The thermal cis-to-trans isomerization of P6MeO2EN in the contracted-helix form required a somewhat higher temperature than that of the stretched helix. |
|
言語 |
en |
| 出版者 |
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出版者 |
MDPI |
|
言語 |
en |
| 出版者版へのリンク |
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表示名 |
10.3390/polym11010094 |
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URL |
https://doi.org/10.3390/polym11010094 |
| DOI |
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関連タイプ |
isIdenticalTo |
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識別子タイプ |
DOI |
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関連識別子 |
10.3390/polym11010094 |
| 日本十進分類法 |
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主題Scheme |
NDC |
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主題 |
430 |
| ISSN |
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収録物識別子タイプ |
EISSN |
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収録物識別子 |
2073-4360 |
| 権利 |
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言語 |
en |
|
権利情報 |
© 2019 by the authors; licensee MDPI AG, Basel, Switzerland. This article is an open-access article distributed under the terms and conditions of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/). |
| 著者版フラグ |
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出版タイプ |
VoR |
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出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| 主となる版 |
|
|
関連タイプ |
isVersionOf |
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|
識別子タイプ |
URI |
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関連識別子 |
https://www.mdpi.com/2073-4360/11/1/94/pdf |
| フォーマット |
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内容記述タイプ |
Other |
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内容記述 |
application/pdf |
POLYM_11010094 (2.3 MB)
