2013 Fiscal Year Final Research Report
Preparation of helicity controlled graphites with macroscopically aligned morphology and their functional properties
| Project/Area Number |
24750219
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Polymer/Textile materials
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| Research Institution | Kyoto University |
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Principal Investigator |
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Keywords | 液晶 / 共役ポリマー / らせん構造 / 形態制御 / グラファイト |
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| Research Abstract |
We synthesized helical aliphatic and aromatic conjugated polymer films such as helical polyacetylene (PA) and poly(3,4-ethylenedioxythiophene) (PEDOT) films in a chiral nematic liquid crystal (N*-LC) as an asymmetric reaction field. The helical conjugated polymer films were then carbonized and subsequently graphitized, yielding helical carbon and graphite films, respectively. The screw direction, degree of twist, and macroscopic alignment of the helical graphite film were well controlled by changing the sense and pitch of the helix, and the orientation of the asymmetric LC field. Furthermore, macroscopically aligned graphite whiskers were prepared from self-assembled aromatic conjugated polymers of poly(meta-phenylene) derivatives as carbonization and graphitization precursors.
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[Remarks] 特記事項 化学雑誌「化学」の2012年67巻8号の表紙に、「ヘリカルグラファイト誕生-花炭に学ぶヘリカルポリアセチレンからの構築-」のタイトルで同誌に掲載された解説(化学, 67, No. 8, 29-33, 2012)の概要を示す絵が採用された。
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