テトラセンの誘導体の合成,結晶構造,およびトランジスタ性能
Hyunsik Moon1, Roswitha Zeis, Evert-Jan Borkent
1Bell Laboratories, Lucent Technologies, Murray Hill, NJ 07974, USA.
Journal of the American Chemical Society
|November 26, 2004
まとめ
ハロゲン化テトラセンの誘導体は結晶構造を変化させ,電荷伝送に大きな影響を与えた. 5,11-二塩ロテトラセンは,滑りこんだパイの積み重ね構造により,高機動性 (1.6cm2/V.s) を示し,効率的なキャリア移動のための軌道重複を高めました.
科学分野:
- オーガニック・エレクトロニクス
- マテリアルサイエンス 材料科学
- 固体物理学 固体物理学とは
背景:
- テトラセンの誘導体は,重要な有機半導体である.
- 結晶構造は,電荷キャリアの移動性に大きく影響します.
- ハロゲン置換は,材料の性質を調整するための一般的な戦略です.
研究 の 目的:
- ハロゲンテトラセンの微生物を合成し,特徴づけること.
- 結晶構造と電荷輸送特性との関係を調査する.
- これらの材料が,高性能な有機電子機器に持つ可能性を探求する.
主な方法:
- 5‐ブロモ,5‐クロロ,5‐ディクロロテトラセンの合成.
- 単結晶の成長と構造分析 (X線微分).
- 単結晶有機フィールド効果トランジスタ (OFET) の製造と特徴付け.
主要な成果:
- モノ置換派生物 (5-ブロモ-および5-クロロテトラセン) は,ヘリングボーン結晶構造を採用した.
- 5,11-ジクロロテトラセンは,滑りこんだパイの積み重ね構造を形成した.
- 1.6cm2/V.sの高電荷キャリアの移動性は,OFETで5,11-ジクロロテトラセンのために測定されました.
結論:
- 5,11-ジクロロテトラセンの滑落したパイの積み重ね構造は,パイの軌道重複を高めます.
- この強化された重複は,高効率の充電キャリア輸送を促進し,高移動性につながります.
- ハロゲン化テトラセンは,特にパイの積み重ねが滑り落ちているものは,先進的な有機電子機器の有望な候補である.
関連する概念動画
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