液晶型コロナヌレンは,電場に反応する
Daigo Miyajima1, Kentaro Tashiro, Fumito Araoka
1School of Engineering and Center for NanoBio Integration, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.
Journal of the American Chemical Society
|January 9, 2009
まとめ
新型コロナヌレンの誘導体は,液晶 (LC) 段階に自己組み立てられ,電場反応性と記憶効果を示します. この非平面の分子は,ホメオトロピー的に整列し,フィールドが除去された後も,その方向性を保持します.
科学分野:
- マテリアルサイエンス 材料科学
- 有機化学 オーガニック・ケミストリー
- 液体結晶は,液体結晶から成る.
背景:
- 平面型ポリサイクル芳香炭化水素は,柱状の液晶 (LC) アセンブリを形成する.
- 非平面の分子構造は,自己組み立てと材料の特性においてユニークな課題と機会を提示します.
研究 の 目的:
- トライブランチ状のパラフィン状のサイドチェーンを持つ,新しいアミド付属のコラヌレンの微生物を合成し,特徴づけること.
- この非平面分子の液晶 (LC) 行動と電場反応を調査する.
主な方法:
- コランヌレンの誘導体の合成.
- 微分スキャニング熱計と偏光光学顕微鏡を用いて,LCメソファースの振る舞いを研究する.
- 分子配列と記憶効果を観察するための電場アプリケーション.
主要な成果:
- コランヌレンの誘導体は,広範囲の温度 (−10~154°C) で六角形の柱状LCメソフェーズに自己組み立てられます.
- 平面的な類似体とは異なり,非平面派生体のLCアセンブリは電場に反応し,ホメオトロピクなアラインメントを達成します.
- このホメオトロピック・アラインメントは,フィールド除去後の長期間記憶され,クリアリング温度に達するまで持続します.
結論:
- 特定のサイドチェーンを持つアミド付属のコラヌレンの誘導体は,安定した六角形の柱状液晶 (LC) 段階を形成することができる.
- 非平面コランヌレンのLCは,電場によって誘発されたユニークなアラインメントと永続的な記憶効果を示します.
- これらの発見は,応答性材料とデータストレージにおける潜在的な応用を示唆しています.
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