パラクリスタリン結合ポリマーフィルムの分子包装を明らかにするための共振性薄型X線 difraktion
Guillaume Freychet1, Eliot Gann2, Lars Thomsen3
1NSLS-II, Brookhaven National Laboratory, Upton, New York 11973, United States.
Journal of the American Chemical Society
|January 4, 2021
まとめ
硫黄のKエッジでの共振 difraktionは,結合されたポリマーで分子パッキングを明らかにします. このテクニックは,光電子機器の従来のX線 difraktionを超えて微細構造分析を強化します.
科学分野:
- 材料科学
- ポリマー化学
- 固体物理学
背景:
- 光電子装置の性能は,結合されたポリマー分子包装に依存しています.
- 従来のX線微分は,これらのポリマーのパラ結晶性により,限られた情報を提供します.
研究 の 目的:
- 結合ポリマーの微細構造を分析するために,硫黄のK-エッジでの共振 difraktion の適用を調査する.
- 様々な結晶の構造を区別する 振動屈折の能力を実証する
主な方法:
- 硫黄のKエッジにX線エネルギーを調節することによって,共振 difraktion (異常 difraktion) を利用した.
- 電子輸送ポリマー P ((NDI2OD-T2) に焦点を当てています.
- 提案された結晶構造に基づくエネルギー依存のピーク強度シミュレーション.
主要な成果:
- P ((NDI2OD-T2) の硫黄のKエッジで顕著な共振振差効果が観察された.
- 観測された行動は 光理論と合致している
- 振動屈折によって異なる結晶包装モデルを区別できることを示した.
結論:
- 共振 difraktionは,結合されたポリマーから重要な微細構造の詳細を抽出するための新しい方法を提供します.
- この技術は,従来のX線 difraktionの限界を克服し,特にいくつかの difraktionピークが利用できる場合.
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