アルキンベンザヌレーションを用いた溶解性および狭いグラフェンナノリボンの一次合成
Wenlong Yang1, Andrea Lucotti2, Matteo Tommasini2
1Department of Chemistry, University of Nevada , Reno, Nevada 89557-0216, United States.
Journal of the American Chemical Society
|June 30, 2016
まとめ
新しい"ボトムアップ"合成により,Brønsted酸触媒によるアルキンベンザヌレーションを用いて超狭いグラフェンナノリボン (GNR) が作られる. この方法により,正確な縁を持つ溶性GNRが得られ,従来のGNR生産における課題を克服します.
科学分野:
- 材料科学
- 有機化学
- ナノテクノロジー
背景:
- グラフェンナノリボン (GNR) は,グラフェンの発見後に重要な研究分野となっています.
- "上から下へ"の方法によって,正確な縁を持つ狭い,非酸化GNRを生産することは,依然として課題です.
研究 の 目的:
- 超狭い溶解性GNRを合成するための新しい"ボトムアップ"アプローチを開発する.
- "トップダウン"GNR製造に関連する制限を克服する.
主な方法:
- スズキポリメリゼーションを使用して,ポリ ((2,6-ダイアルキニル-p-フェニレン) (PDAPP) の前駆体を合成した.
- GNR形成のためのブロンステッド酸促進,ノンオキシダティブアルキンベンザヌレーション戦略を使用した.
- 特徴付けには光譜 (IR,Raman) と顕微鏡 (TEM,STM) の技術が用いられました.
主要な成果:
- 成功して合成された非常に狭い (約. 0.5 nm) と溶解性GNRである.
- PDAPP前体におけるエチニラリル側鎖の効率的なサイクリングを達成した.
- 特徴付けデータはGNRの形成を確認し,理論的な計算と一致しました.
結論:
- 開発された"ボトムアップ"アルキンベンザヌレーション戦略は,高品質で狭いGNRを生成するのに有効です.
- この方法は,GNR合成の難しい"トップダウン"アプローチに有効な代替案を提供します.
- その結果得られたGNRは,さらなる応用のために望ましい性質を持っています.
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