光反応性水素結合ロゼットの階層的組織
Shiki Yagai1, Toshiharu Nakajima, Keiki Kishikawa
1Department of Applied Chemistry and Biotechnology, Faculty of Engineering, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan. yagai@faculty.chiba-u.jp
Journal of the American Chemical Society
|August 4, 2005
まとめ
研究者らは,円盤状の超分子を使って,新しい光反応性オーガノゲルを作りました. このゲルゲルは,
科学分野:
- 超分子化学 超分子化学
- 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
背景:
- 水素結合型円盤状の集積物 (ロゼット) は,アゾベンゼン付属のメラミンとバルビチュラート/シアヌラートから形成される.
- これらのロゼットは,階層的な組織と光反応的行動を示しています.
研究 の 目的:
- アゾベンゼンベースのロゼットの階層的組織と光反応的行動を調査する.
- 円盤状の超分子を使って光反応性オルガンゲルを開発する.
主な方法:
- 核磁共振 (NMR) スペクトロスコーピーは,核磁共振 (NMR) のスペクトロスコーピーを用います.
- 紫外線/紫外線スペクトロスコピー
- ダイナミックライト分散 (DLS)
- ゼーレーションに関する研究
- 分子モデリング
主要な成果:
- バービチューラートベースのローゼットは,散発した長方形柱状のメソフェーズを形成しますが,溶媒の高級集積物ではありません.
- シアヌラート基ローゼットは,散発した六角形の柱状メソフェーズを形成し,溶媒中の繊維の塊は,オルガノゲルの形成につながります.
- アゾベンゼントランスシスイソメリゼーションによるUV照射による柱状積層の可逆解離および再構成.
- 分子モデリングにより,シス-アゾベンゼンロゼットのローゼットは平面性を失っていることが示されました.
結論:
- アゾベンゼンベースのローゼットは,柱状のメソフェーズとオルガンゲルを形成することができます.
- アゾベンゼン分子は,写真制御による自己組み立てと分解を可能にします.
- 円盤状の超分子を使って,新しい光反応性オーガノゲルが成功裏に作成されました.
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