合成と構造的,電気化学的,頂点にバッキーフェロセンを有する円形の分子の堆積特性
Yutaka Matsuo1, Ayako Muramatsu, Yuko Kamikawa
1Nakamura Functional Carbon Cluster Project, ERATO, Japan Science and Technology Agency, Department of Chemistry, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
Journal of the American Chemical Society
|July 27, 2006
まとめ
研究者は新しいフルレレン-フェロセンのハイブリッド分子を合成しました. これらの化合物は柱状結晶または液晶を形成し,酸化された形態は液晶の性質を保持します.
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
- ナノテクノロジー ナノテクノロジー
背景:
- フルレレンとフェロセンのハイブリッドは,ユニークな電子的および構造的特性を有しています.
- アラルキル側鎖は,分子自己組み立てと相行動に影響を与えます.
- 超分子構造は,高度な材料の応用において極めて重要です.
研究 の 目的:
- 新しい円形のフルレレン-フェロセンのハイブリッド分子を合成し,特徴づけること.
- 超分子組成 (結晶対液晶) にの側面鎖の長さの影響を調査する.
- 酸化形態の電気化学的性質と液晶の振る舞いを調査する.
主な方法:
- 5つのアラルキル置換フルレン-フェロセンのハイブリッド分子の合成 (Fe[C60{C6H4-(OCO-C6H3-(OR)2-3,4)-4}5]Cp).
- 結晶サンプルに対するX線結晶学を用いた構造分析.
- 液晶相識別のための微分スキャニング熱計と偏光光学顕微鏡.
- 電気化学的研究 (循環電圧測定法) で,酸化還元素質の性質を決定する.
主要な成果:
- メチルサイドチェーンを持つ化合物は,頭から尾まで積み重ねられた柱状の結晶を形成した.
- 長いC18H38サイドチェーンを持つ化合物は,液体結晶の振る舞いを示した.
- 液体結晶化合物の酸化により,パラマグネティックなFe (III) 種が生み出され,それも液体結晶の性質を示した.
結論:
- アラルキル側鎖の長さは,フルレン-フェロセンのハイブリッドの超分子組成を決定し,柱状結晶または液晶に導きます.
- その結果生じるハイブリッド分子とその酸化形態は,調節可能な自己組み立てと,高度な機能的材料の可能性を示しています.
- この研究は,新しい超分子システムの設計におけるフルレン-フェロセンの化学の範囲を拡大します.
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