キラルサリチルデネフェニルエチラミンの光学活性と光学アニソトロピー
Akifumi Takanabe1, Masahito Tanaka2, Kohei Johmoto3
1Department of Advanced Science and Engineering, Graduate School of Advanced Science and Engineering, Waseda University , 3-4-1 Okubo, Shinjuku-ku, Tokyo 169-8555, Japan.
Journal of the American Chemical Society
|October 25, 2016
まとめ
チラルの光力学結晶は,UV光にさらされると独特の曲げと回転の動きを示します. G-HAUPで測定された彼らの光学および光学特性は,結晶状態と溶液状態の間の重要な違いを明らかにし,機械的な運動制御を強化します.
科学分野:
- 材料科学
- クリスタルグラフィー
- 写真化学
背景:
- 光力学的結晶にキラリティを導入すると 機械的な動きが多様化します
- キラル結晶は,光力学的性質を評価するために不可欠です.
- フォトクロミックなN-3,5-di-tert-butylsalicylidene-1-phenylethylamineエナントイオマーは,光力学的効果を発揮する.
研究 の 目的:
- キラル光学結晶のカイロプティックおよび光学アニソトロピク特性を測定および分析する.
- 紫外線がこれらの性質に与える影響を評価する.
- 結晶構造と光力学的運動の関係を理解する
主な方法:
- 汎用高精度ユニバーサルポリメーター (G-HAUP) を使用した光学アニソトロプ (線形二重断裂,LB;線形二重断裂,LD) とキロプティック (円形二重断裂,CB;円形二重断裂,CD) の同時測定.
- S-およびR-エナティオメアのプレート状の結晶のUV光照射.
- 水晶構造の分析と溶液と計算データとの比較
主要な成果:
- 紫外線照射は,アニゾトロプ的縮小による結晶の曲げと回転を誘発した.
- LDピークは330nmで,CDコットン効果は330nmと460nmで観察された.
- 溶液の測定とシミュレーションと対比した結晶のCBとCDスペクトル.
- 結晶の非対称性パラメータ (g) は溶液または計算値よりも著しく高かった.
結論:
- フォトメカニカル結晶のキラリティは 複雑なメカニカル運動を可能にします
- G-HAUPは,キラル結晶のカイロプティックと光学特性を特徴付けるのに有効です.
- 結晶状態と溶液状態の間には,カイロプティカルな性質の有意な違いがある.
- 水晶の詰め込みと構造は カイロプティックな反応を高め,高度な光機械装置の可能性を秘めています.
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