酸素に埋め込まれたキノイドペンタセンとノンアセンの合成と特性
Yanpei Wang1, Shuhai Qiu1, Sheng Xie1
1State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering , Hunan University , Changsha 410082 , P.R. China.
Journal of the American Chemical Society
|January 12, 2019
まとめ
合成的に困難な酸素を埋め込んだ多循環性芳香炭化水素 (PAH) は,安定したキノイドペンタセンとノンアセンに効率的に構築されました. これらの新材料は,赤色シフト吸収と改善された電荷輸送特性を表しています.
科学分野:
- 有機化学
- 材料科学
- 超分子化学
背景:
- 特定の構造を持つ多循環性芳香炭化水素 (PAH) の合成は,地域選択の方法が限られており,溶解性が低いため困難である.
- 既存のO無効PAHは電子通信を中断し,吸収波長が短くなった.
研究 の 目的:
- 正規のジグザグ状のO入り縁を持つクイノイドペンタセンとノンアセンを製造するための効率的な方法を開発する.
- これらの新しいO組み込みアセンの光電子特性と構造特性を調査する.
主な方法:
- O組み込みキノイドアセンの地域選択合成
- 構造確認のための単結晶X線微分分析 (XRD)
- 光学特性を決定するUV-Vis吸収スペクトル.
- 電荷輸送評価のための薄膜有機フィールド効果トランジスタ (OFET) の測定.
- 酸化行動を調査する電気化学の研究.
主要な成果:
- 安定したキノイドペンタセンとノナセンをO入りジグザグで合成した.
- 構造はXRDで確認され 水素とハロゲンの結合が顕著です
- 高度な赤色移転吸収 (~699 nmまで) と狭いエネルギーギャップ (~1.5 eV) を示した.
- 結合長とモラー吸収係数が増加し,Oを含むリングとクイノイド亜単位が増えた.
- O-ペンタセンの誘導体で0.0152cm2V−1s−1までの穴の移動性を達成した.
- 分子構造に依存する性質を持つ,酸化時に生成された根幹カチオンとダチオン.
結論:
- この研究は,安定性を高め,調節可能な光電子特性を持つ新種の縦結合アセンを提示する.
- この発見は,O組み込みキノイドアセンの構造-特性関係を強調し,新しい有機電子材料への道を開く.
- 開発された合成戦略と研究された性質は,高度な機能的な有機材料の設計に貴重な洞察を提供します.
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