1,3,5-トリシアノ-2,4,6-トリッシオ (スタイリル) ベンゼン誘導体の2つのフォトン吸収特性
1Molecular Opto-Electronics Laboratory, Department of Chemistry and Center for Electro- & Photo-Responsive Molecules, Korea University, 1-Anamdong, Seoul 136-701, Korea.
Journal of the American Chemical Society
|October 11, 2001
まとめ
研究者らは,新しいベンゼン誘導体における2光子吸収 (TPA) を調査した. 彼らは,結合長とドナー強度の増加がTPA特性を高め,新しいTPA染料の設計のための戦略を提供することを発見しました.
科学分野:
- 非線形光学は,非線形光学である.
- 材料科学 材料科学とは
- 有機化学 オーガニック・ケミストリー
背景:
- 2フォトンの吸収 (TPA) は非線形光学プロセスで,顕微鏡や光学データストレージの応用がある.
- 拡張されたπ結合を持つベンゼン誘導体は,TPA材料の有望な候補である.
研究 の 目的:
- 1,3,5-トリシアノ-2,4,6-トリス・ストイリル・ベンゼン誘導体のTPA特性を調査する.
- 分子構造とTPA効率の関係を理解する.
主な方法:
- 1フォトンの吸収,光,刺激スペクトルを含むスペクトル解析.
- ナノ秒パルスによる2光子誘発光法を使用して,TPA横断面 (デルタ・最大) の測定.
主要な成果:
- 化合物は大きなストークスシフトを示し,結合の長さとともに増加します.
- 1光子と2光子の興奮スペクトルは類似しており,共有された興奮状態を示しています.
- ピークTPAの横断面値は (50-2620) x 10(-50) cm4 s/光子からなる.
- TPAの効率は,ドナーの強さと結合の長さとともに増加する.
結論:
- デルタ (最大) とベータ (超極化性) の間には線形関係がある.
- このデルタ-ベータ関係は,新しい八極性TPA染料を設計するための貴重な合成戦略を提供します.
- 研究された化合物は,TPAの応用に重要な潜在能力を示しています.
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