多機能のπ膨張型マクロサイクリックオリゴチオフェン6-マーおよび関連するマクロサイクリックオリゴマー
Masahiko Iyoda1, Keita Tanaka, Hideyuki Shimizu
1Department of Chemistry, Graduate School of Science and Engineering, Tokyo Metropolitan University , Hachioji, Tokyo 192-0397, Japan.
Journal of the American Chemical Society
|January 17, 2014
まとめ
合成されたマクロサイクリックオリゴチオフェンは,ユニークな電子および構造的特性を有しています. ポリモルフィズムにより,調節可能な光とフィールド効果トランジスタ (FET) の活動が可能になり,新しい電子材料への道を開く.
科学分野:
- 有機化学 オーガニック・ケミストリー
- マテリアルサイエンス 材料科学
- 超分子化学 超分子化学
背景:
- マクロサイクルオリゴチオフェンは有望な有機電子材料である.
- 構造と性質の関係を理解することは,高度なアプリケーションにとって極めて重要です.
研究 の 目的:
- 多機能のπ展開型マクロサイクリックオリゴチオフェンを合成し,特徴づけること.
- 電子特性,自己組み立て行動,およびポリモルフィズム駆動アプリケーションの可能性を調査する.
主な方法:
- 合成のためのマクマリー結合反応.
- 構造変更のためのブロミネーション-脱水ブロミネーション.
- X線分析およびスキャニングトンネル顕微鏡 (STM) による構造および自己組み立ての研究.
- 電子特性の評価のための化学酸化.
主要な成果:
- 6・9・12メルのオリゴチオフェンと,そこから派生したエチニレンマクロサイクルの合成に成功した.
- 結晶構造の明瞭化により,非平面的および円形の構造が明らかになる.
- エチニレンマクロサイクルの自己組み立てモノレイヤーによる六角形の多孔ネットワークの形成.
- ラジカルカチオンにおけるπ-ダイマー形成の観察と,ラジカルカチオンにおける独特の電子行動 (リング電流効果,ビラジカル特性) の観察.
- 異なる融点と固体構造を持つ6メルのオリゴチオフェンにおけるポリモルフィズム発見.
結論:
- 合成されたマクロサイクリックオリゴチオフェンは,多様な電子的および構造的特性を表しています.
- 6メルのポリモルフィズムは,光とフィールド効果トランジスタ (FET) の性質の切り替えを可能にします.
- これらの材料は,先進的な電子機器における応用の可能性を秘めています.
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