ベンゾトリチオフェンベースのドナー-受容体共ポリマーで,超分子組織がはっきりしています
Xin Guo1, Sreenivasa Reddy Puniredd, Martin Baumgarten
1Max Planck Institute for Polymer Research, Mainz, Germany.
Journal of the American Chemical Society
|May 12, 2012
まとめ
研究者らは,有機エレクトロニクスのための2つの新しいドナー-受容体共ポリマー,P1とP2を合成しました. 類似した構造にもかかわらず,P1は負荷輸送を示さなかったが,P2は高い穴の可動性を達成し,背骨の曲線の性能への影響を強調した.
科学分野:
- 材料科学 材料科学とは
- オーガニック・エレクトロニクス
- ポリマー化学のポリマー化学について
背景:
- ドナー-受容体共ポリマーは,有機電子機器にとって極めて重要です.
- ベンゾ[2,1-b:3,4-b':5,6-c′′]トリチオフェンは,ポリマーの特性を調節する可能性がある新しいドナーユニットです.
- 構造-特性関係を理解することは,半導体性能を最適化するための鍵です.
研究 の 目的:
- 独特のドナーユニットを組み込む2つの新しいドナー-受容体共ポリマー (P1とP2) を合成し,特徴づけること.
- 構造変化が超分子組織,膜の微細構造,および電荷輸送特性に与える影響を調査する.
- 有機フィールド効果トランジスタ (OFET) のトランジスタ性能とポリマーバックボーン曲線を相関させる.
主な方法:
- ドナー-受容体共ポリマーP1およびP2の合成
- π-スタッキング距離と超分子組織の特徴.
- フィールド効果トランジスタのP1とP2の製造と試験.
- コンピューティングまたはスペクトロスコピ的方法を使用して,ポリマーバックボーン曲線の分析.
主要な成果:
- 両ポリマーとも,円盤状のドナーユニットにより,小さなπ-スタッキング距離 (P1の0.35 nm,P2の0.37 nm) を示した.
- P1は,従来のポリマーとP2.2と比較して,異なる超分子組織を示した.
- P1 の場合,OFET の場合,有料航空会社による輸送は観察されなかった.
- P2は,0.04cm(2) V(-1) s(-1) までの大きな穴の移動性を示した.
結論:
- ポリマーの骨格の曲折度は,高分子組織と電荷輸送に大きな影響を与えます.
- P2に追加のチオフェン単位を導入することで,穴の移動性を向上させる曲線が誘発されました.
- これらの発見は,ポリマーアーキテクチャを制御することによって,高性能有機半導体設計のための重要な洞察を提供します.
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