シリコンと炭素のブリッジを備えた梯子オリゴ ((p-フェニレンビニレン)) が使用されています
Caihong Xu1, Atsushi Wakamiya, Shigehiro Yamaguchi
1Department of Chemistry, Graduate School of Science, Nagoya University, Chikusa, Nagoya 464-8602, Japan.
Journal of the American Chemical Society
|February 11, 2005
まとめ
研究者らは,シリコンと炭素のブリッジを用いたレダードオリゴ(p-フェニレンビニレン) (LOPVs) を合成する多用途な方法を開発した. このテクニックは,明るい光と小さなストークスシフトを示す拡張された,平らなパイ結合系を作成します.
科学分野:
- 有機化学 オーガニック・ケミストリー
- マテリアルサイエンス 材料科学
- 超分子化学 超分子化学
背景:
- 梯子オリゴ ((p-フェニレンビニレン) (LOPVs) は,有機エレクトロニクスにおける潜在的な応用を持つ重要なpi結合システムです.
- 既存の合成方法は,しばしば多用途性がないか,拡張され,よく定義された梯子構造を生産するために苦労します.
研究 の 目的:
- 梯子オリゴ ((p-フェニレンビニレン) (LOPVs) および関連するパイ電子システムを構築するための一般的で汎用的な合成方法論を開発する.
- リング融合の度合いが異なるLOPVの同型シリーズの合成を可能にするために.
- 合成された梯子システムの構造的および光物理的特性を特徴付ける.
主な方法:
- (o-シリルフェニル) アセチレン誘導体の分子内還元サイクルとフリーデル・クラフトス型サイクルを組み合わせた新しい合成戦略です.
- これらのサイクリング反応を順次適用して,溶融リングシステムを構築します.
- 結晶構造分析と光物理学的測定 (光スペクトロスコーピー) を行い,製品の特徴を決定する.
主要な成果:
- 13環融合システムを含む同型シリーズLOPVの合成が成功しました.
- 結晶構造の分析により,ほぼ平らなパイ結合フレームワーク (約. 2.9 nmの長さ) で,最大のLOPV.
- すべての合成された梯子型パイ電子系は,高量子収量と小さなストークスシフトを持つ強烈な可視光を示した.
結論:
- 開発された合成方法は,複雑な梯子pi-conjugatedシステムを作成するために一般的で汎用的です.
- 合成されたLOPVは,強い光と最小限のストークスシフトを含む望ましい光物理的特性を有しており,光電子アプリケーションに有望です.
- この研究は,調節可能な電子的および光学的特性を持つアクセシブルなpi結合材料の範囲を拡大します.
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