液相のデンドロニズドグラフェンナノリボンによる調節可能な上部構造
Fugui Xu1, Chunyang Yu1, Alexander Tries2,3
1School of Chemistry and Chemical Engineering , Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing, Shanghai Jiao Tong University , 800 Dongchuan Road , Shanghai 200240 , China.
Journal of the American Chemical Society
|July 4, 2019
まとめ
樹状ポリマーで グラフェンナノリボン (GNR) を合成し ナノワイヤ,ヘリケス,ナノファイバーに 独自の自己組み立てを実現しました これらのGNRスーパーストラクチャは,光電子アプリケーションの潜在性を示しています.
科学分野:
- 材料科学
- ポリマー化学
- ナノテクノロジー
背景:
- グラフェンナノリボン (GNR) は,電子機器にとって有望な材料です.
- GNRの組み立てと性質を制御することは,アプリケーションにとって極めて重要です.
- デンドリティックポリマーは 精密な構造制御を提供します
研究 の 目的:
- dendriticポリマーで機能化されたグラフェンナノリボンを合成する.
- これらの機能化されたGNRの自己組み立て行動を調査する.
- 超構造物の光電子特性を探求する.
主な方法:
- 明確に定義されたグラフェンナノリボン (GNR) の合成
- 異なる世代のデンドリートポリマーでGNRの機能化.
- GNRの上部構造物の特徴は,スペクトロスコピーと超高速光伝導性を用いる.
主要な成果:
- GNRのデンドロンでは0.59-0.68の接ぎ木比率を達成した.
- THFでナノワイヤ,ヘリケ,ナノファイバーに 1Dの超分子自己組み立てが実証された.
- 観測された近赤外線吸収 (650~700 nm) と 1.2-1.3 eV の光学帯域のギャップ.
- 螺旋構造は最も長い自由キャリア (3.5 ps) とエクシトン寿命 (数百 ps) を示した.
結論:
- 精密な3Dデンドロン構造により,調整可能なGNRの自己組み立てが可能である.
- 機能化されたGNRは,調節可能な光電子特性を持つオーダーされた上部構造を形成する.
- これらのGNR上部構造は,高度な光電子装置の潜在能力を有しています.
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