奇拉基烯胺的光学晶体中的光学活性和光学异性
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
概括
在紫外线照射下,奇拉光力学晶体表现出独特的曲和扭曲运动. 通过G-HAUP测量它们的手术和光学特性,揭示了晶体和溶液状态之间的显著差异,增强了机械运动控制.
科学领域:
- 材料科学
- 晶体学
- 摄影化学
背景情况:
- 在光力学晶体中引入奇拉性使机械运动多样化.
- 晶对于评估光机械性质至关重要.
- 光色的N-3,5-di-tert-butylsalicylidene-1-phenylethylamine反体表现出光机械作用.
研究的目的:
- 测量和分析奇拉光力学晶体的光学和异构性质.
- 评估紫外线辐射对这些特性的影响.
- 了解晶体结构与光机械运动之间的关系.
主要方法:
- 使用通用高精度通用极光仪 (G-HAUP) 同时测量光学异构 (线性双折射,LB;线性二极化,LD) 和光学 (圆形双折射,CB;圆形二极化,CD) 光谱.
- 用紫外线照射S-和R-反体的板状晶体.
- 对晶体结构的分析和与溶液和计算数据的比较.
主要成果:
- 紫外线辐射导致晶体因异型收缩而曲和扭曲.
- 在330nm和460nm观察到明显的LD峰值和CDCotton效应.
- 结晶中的CB和CD光谱与溶液测量和模拟进行对比.
- 晶体中的不对称参数 (g) 显著高于溶液或计算值.
结论:
- 光力学晶体中的性使复杂的机械运动成为可能.
- G-HAUP有效地表征了奇拉晶体的视觉和光学特性.
- 在晶体和溶液状态之间存在显著的光学特性差异.
- 晶体包装和结构增强了手术反应,为先进的光机械设备提供了潜力.
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