ディアルコキシビチアゾール:ヘッドツーヘッドポリマー半導体の新しい構成要素
Xugang Guo1, Jordan Quinn, Zhihua Chen
1Department of Chemistry and the Materials Research Center, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States.
Journal of the American Chemical Society
|January 19, 2013
まとめ
ヘッドツーヘッドリンクを備えた新しいポリマーは,BTzORビルディングブロックを使用して,有機エレクトロニクスで高性能を達成します. これらの材料は,高度な有機薄膜トランジスタのための強化された結晶性と移動性を示しています.
科学分野:
- マテリアルサイエンス 材料科学
- 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:
- 溶液処理可能なポリマー半導体は,低コストの有機電子機器に不可欠です.
- アルキル鎖の機能化は,溶解性とキャリアの移動性を改善します.
- ヘッドツーヘッド (HH) リンクは, π-π の重複が少なく,移動性が低いため,以前は避けられていた.
研究 の 目的:
- HH結合のための新しい構成要素である4,4'-ダイアルコキシ-5,5'-ビチアゾール (BTzOR) を合成する.
- BTzORを高性能有機薄膜トランジスタ (OTFT) のポリマーに組み込む.
- BTzORの構造がポリマーの特性やデバイスの性能に与える影響を調査する.
主な方法:
- BTzORのビルディングブロックの合成.
- BTzORユニットを含むポリメリゼーション.
- 有機薄膜トランジスタ (OTFT) の製造と特徴付け.
主要な成果:
- BTzORは,強化されたπ結合と結晶性を備えたHHマクロ分子アーキテクチャを可能にしました.
- BTzORポリマーは低帯域差 (1.40-1.63 eV) と高穴移動性 (0.06-0.25 cm2/Vs) を示した.
- BTzORポリマーは,BTzORの類似品と比較して,イオン:イオンオフ比率と環境安定性を改善しました.
結論:
- BTzORは,高性能ポリマー半導体のための有望な構成要素であり,HH結合の限界を克服しています.
- シアゾールの幾何学的および電子的性質は,π-π重複,結晶性,および電荷輸送を高めます.
- 合成経路は,他のビチアゾールベースの材料にも適応可能であり,有機電子工学を進歩させています.
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