ハイブリッドチタニア基メソ構造複合材料の構造分析
Shannon W Boettcher1, Michael H Bartl, Jerry G Hu
1Department of Chemistry and Biochemistry, California NanoSystems Institute, University of California, Santa Barbara, California 93106, USA.
Journal of the American Chemical Society
|July 7, 2005
まとめ
研究者は,トリフローロアセテート改変チタンとブロックコポリマーを使用して,高品質のチタニアメソ構造フィルムを作成しました. これらの高度な材料は,特定の構成要素分布の有序な構造を示し,新しいアプリケーションの道を開く.
科学分野:
- マテリアルサイエンス 材料科学
- ナノテクノロジー ナノテクノロジー
- 固体化学 固体化学
背景:
- タイタニア基のメソ構造フィルムは,先進的な光学および電子アプリケーションに不可欠です.
- ナノスケールのアーキテクチャとコンポーネントの分布を制御することは,フィルム特性を最適化するための鍵です.
研究 の 目的:
- 制御された対称性を持つ高光学品質のチタニアメソ構造のフィルムを製造するために.
- ハイブリッドコンポーネントの分布,ダイナミクス,およびローカル環境を調査する.
主な方法:
- トリフオロアセテート (TFA) 改変型チタン前駆体およびPEO-PPO-PEOブロック共ポリマーを使用した製造.
- IR/ラーマン光譜法,局所小角X線散射,伝送電子顕微鏡を用いた特徴付け.
- 固体核磁共鳴 (NMR) 技術は, (19) F-->(1) H CP, (13) C{(1) H} 2Dヘテロ核相関,および (1) H リラックスを含む.
主要な成果:
- TFAはチタンの座標であり,ブロックコポリマーによって秩序あるメソ構造 (立方体または2D六角形) に編成された安定した複合体を形成します.
- ポリエチレン酸化物 (PEO) は,主にTFA改変型チタニアに含まれています.
- ポリプロピレン酸化物 (PPO) は,TFA-チタニアとマイクロフェーズ分離および界面領域を占めています.
- トリフオロアセテート (-CF(3) 群) は,無機成分内でランダムに分布し,クラスターを形成しない.
結論:
- この研究では,制御された構成要素の配置でオーダーされたチタニアメソ構造のフィルムを成功裏に製造しました.
- この発見は,これらのハイブリッド材料の構造-特性関係を明らかにします.
- この研究は,先端のチタニアベースの機能的材料の設計のための基礎を提供します.
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