折りたたみ可能なオープンチェーンから形状持続的なマクロサイクル:合成,2Dオーダーリングへの影響,および刺激された自己組み立て
Soobin Kim1, Henry D Castillo2, Milim Lee1
1Department of Chemistry , Seoul National University , 1 Gwanak-ro, Gwanak-gu, Seoul 08826 , Korea.
Journal of the American Chemical Society
|March 15, 2018
まとめ
トリアゾール・ベンゼンの分子を 表面に自己組織化するように設計しました 異なる分子構造と周辺群が 刺激に対する有機膜の順序と反応を正確に制御します
科学分野:
- 材料科学
- 超分子化学
- オーガニック電子
背景:
- 小分子自己組み立ては,化学および電子アプリケーションにおけるオーダーされた有機フィルムの鍵です.
- 分子間の相互作用の正確な制御は 分子構造と機能をプログラムするのに不可欠です
- ビス・トリアゾール・ベンゼン基の分子は,表面の自己組み立て研究のための調整可能なプラットフォームを提供します.
研究 の 目的:
- トリアゾルベンゼン基の新しいπ結合分子を設計し合成する.
- 表面の構造に依存した自己組織化行動を調査する.
- 表面の順序と刺激に対する反応に 分子構造と周辺群の影響を調べる.
主な方法:
- 後期段階のC-Cクロスカップリングを用いたビス・トリアゾール・ベンゼン誘導体の合成.
- スキャントンネル顕微鏡 (STM) で,表面での分子自己組み立てを分析する.
- 線形前駆体と周縁群 (アルキル対オリゴエチレングリコール) を有するサイクル化されたマクロサイクルを比較した研究.
主要な成果:
- 分子脊髄の柔軟性や周辺のグループ化学に基づいた 独特の自己組み立て行動が観察された.
- アルキル鎖は交互の構造を促進し,オリゴエチレングリコール (OEG) 鎖はより密集したπ-コアにつながった.
- サイクリングされたマクロサイクルは,制限された形状の自由性のために,線形前駆体よりも速い自己組み立て運動を示した.
- STMの先端の乱れとコソルトは,自己組み立て運動と表面のパターンに大きく影響した.
結論:
- 形状の制限と周辺グループの選択を含む分子設計は,表面の自己組み立てを正確に制御することを可能にします.
- 溶液中の弱い非共性相互作用は,2次元表面上の閉じ込められた分子のために増幅され,堅固な順序付けにつながります.
- これらの発見は,高度な有機物質と表面パターンのための分子相互作用のプログラムに関する洞察を提供します.
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