硫化酸化物によって制御されるエナンチオピュアアゾベンゼンの光誘発型変形スイッチ
M Carmen Carreño1, Isabel García, Irene Núñez
1Departamento de Química Orgánica (C-I), Universidad Autónoma de Madrid, Cantoblanco, 28049-Madrid, Spain. carmen.carrenno@uam.es
Journal of the American Chemical Society
|May 15, 2007
まとめ
チラル硫酸化アゾンベンゼンは分子スイッチとして作用し,キラリティの移転と光異性化時に明確な構成変化を示します. これらの特性により,光制御分子スイッチングのアプリケーションが可能になります.
科学分野:
- 有機化学 オーガニック・ケミストリー
- 超分子化学 超分子化学
- フォトケミストリー フォトケミストリー
背景:
- アゾベンゼンは,光反応性分子スイッチとして広く使用されています.
- 分子スイッチのキラリティは,高度な機能を導入することができます.
- 硫酸酸化基は,ステレオジェニックな中心部とユニークな電子特性を有しています.
研究 の 目的:
- オーソ/メタp-トイルスルフォキシド置換剤でエナンチオピュアアゾベンゼンを合成する.
- フォトイソメリゼーション行動とキラル性質を調査するために.
- 光制御分子スイッチとしての可能性を探求するためです.
主な方法:
- アゾベンゼン誘導体の地域選択合成.
- 紫外線と円形の二重化 (CD) を用いたフォトアイソメリゼーション研究.
- NMRとキラル高性能液体染色体 (HPLC) による構造分析.
主要な成果:
- 硫酸塩基を含む2つのエナンチオピュアアゾブンゼンの合成が成功しました.
- 硫酸化物からアゾ系へのキラリティの移転の観察,同位体依存.
- NMRは,異なるU形 (cis-3) とS形 (cis-7) の形状を明らかにした.
- トランス同位体とシス同位体の特定の光学回転の有意な差異.
結論:
- 硫酸化基は,光異性化と形状制御において二重の役割を果たします.
- 静止状態では,明確なキラルな実体が生成される.
- これらのアゾベンゼンは,光制御分子スイッチングアプリケーションの有望性を示しています.
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