デフェクトインクルージョン戦略を用いて,結合ポリマーのチェーンコンフォームを制御する
Giannis Bounos1, Subhadip Ghosh, Albert K Lee
1Department of Chemistry and Biochemistry and the Center for Nano and Molecular Science and Technology, University of Texas, Austin, Texas 78712, USA.
Journal of the American Chemical Society
|May 27, 2011
まとめ
MEH-PPVのような結合ポリマーの欠陥は,その光学的性質に影響します. 線形欠陥はポリマーのアニソトロピーを維持し,曲げられたり飽和されたりした欠陥はそれを減少させ,さまざまなチェーン構成につながります.
科学分野:
- ポリマー化学のポリマー化学について
- 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
背景:
- ポリー ((2 - メトキシ - 5 - ((2 - エチルヘキシロキシ) - p - フェニレンビニレン) (MEH-PPV) は,有機電子機器のための重要な結合ポリマーです.
- 構造上の欠陥がポリマーの特性に与える影響を理解することは,デバイスの性能を最適化するために不可欠です.
- 調整されたバックボーン構造を持つ新しいMEH-PPV共ポリマーの合成と特徴付けは,重要な関心があります.
研究 の 目的:
- MEH-PPVのランダムな共ポリマーを合成し,異なるバックボーン指向モノマーを組み込む.
- MEH-PPV.の光物理的特性に対する様々な種類の脊髄欠陥の影響を調査する.
- 構造上の欠陥をポリマー鎖の形状と光学アニソトロピーと相関させるため.
主な方法:
- ランダムなMEH-PPVコポリマーを合成するためのホーナー法.
- ポリマーのアニソトロピーを研究するための単分子極化吸収スペクトロスコーピー.
- 欠陥のあるモデルPPVオリゴマーの分子動力学シミュレーション.
主要な成果:
- PPVタイプのポリマーの線形脊髄を保存する欠陥は,欠陥のないMEH-PPVに似た高いアニソトロピーを示します.
- 頑固で曲がった欠陥は,単鎖アニソトロピーを減少させます.
- 飽和した欠陥は回転の自由を導入し,さまざまなチェーン構成につながります.
- シミュレーションでは,線形と欠陥のないオリゴーマーが拡張され,曲げられた欠陥と飽和した欠陥が折りたたまれた構造を採用することを示しています.
結論:
- バックボーン欠陥の種類は,MEH-PPVの形状と光学特性に大きく影響します.
- 線形欠陥は,結合ポリマーの望ましいアニソトロピク特性を維持するのに有益である.
- 構造上の欠陥により,ポリマーチェーン包装と有機電子機器における潜在的な応用が決定される.
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