イミンからオクサゾールとシアゾールへの結合の変換
Peter J Waller1,2,3, Yasmeen S AlFaraj1,2, Christian S Diercks1,2,3
1Department of Chemistry , University of California-Berkeley , Berkeley , California 94720 , United States.
Journal of the American Chemical Society
|July 13, 2018
まとめ
研究者は,イミン結合先駆体からチアゾールとオクサゾールの結合により,安定した,多孔性共性有機フレームワーク (COF) を作成する簡単な方法を開発した. このアプローチは,特定のCOF構造の結晶化における課題を克服します.
科学分野:
- 材料科学
- 有機化学
- ポリマー化学
背景:
- 協和有機フレームワーク (COF) は,様々な用途を持つ結晶性多孔ポリマーです.
- シアゾールやオクサゾールなどの特定の結合を持つCOFを合成することは,限られた顕微鏡の可逆性のために困難である可能性があります.
- イミン結合COFは一般的な前駆物ですが,長期的な化学的安定性は欠けることがあります.
研究 の 目的:
- シアゾールとオクサゾールに結合した共性有機フレームワーク (COF) を合成するための簡単で効率的な方法を開発する.
- 新しく合成されたアゾール結合COFの構造的,結晶的,および多孔性の性質を調査する.
- アゾール結合COFの化学的安定性を,イミン結合前駆体と比較して評価する.
主な方法:
- リンカー置換と酸化サイクルによるイミン結合COF (ILCOF-1) の変換
- 赤外線スペクトロスコーピー,固体NMRスペクトロスコーピー,粉末X線微分を用いた特徴付け.
- 窒素吸収実験による孔性の評価
主要な成果:
- イミン結合先駆体から2つの同構造アゾール結合COF (シアゾールとオクサゾール結合) を合成しました.
- 変換の完全性と,結果のCOFの結晶性を確認した.
- アゾール結合のCOFは多孔性を維持し,イミン結合の起始材料と比較して化学的安定性を高めることが実証された.
結論:
- 開発された方法は,チアゾールとオクサゾールに結合したCOFに簡単にアクセスできます.
- このアプローチにより,通常結晶化が困難である結合を持つCOFの合成が可能になります.
- その結果,アゾール結合COFは化学的安定性を向上させ,多孔性を維持し,潜在的な用途を拡大します.
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