在水中探测库库比图里尔组合与TEMPO类氧化物:一种具有自旋-自旋相互作用的三氧化物
David Bardelang1, Karol Banaszak, Hakim Karoui
1Laboratoire LCP, Universités d'Aix-Marseille I, II, III et CNRS, Avenue Escadrille Normandie-Niemen, 13 397 Marseille Cedex 20, France.
Journal of the American Chemical Society
|April 2, 2009
概括
氧化物激素有效地探测水中的库库比图里尔 (CB[n]) 组件. 这些CB[n]组件保护氧化物免受减少,展示了致癌效应.
科学领域:
- 超分子化学 超分子化学
- 物理化学 物理化学
- 频谱学是一种光谱学.
背景情况:
- 黄瓜 (CB[n]) 是具有独特腔结构的宏环宿主.
- 氧化物自由基是多功能旋转探针.
- 了解水性介质中的宿主-客人相互作用至关重要.
研究的目的:
- 调查使用氧化自由基作为探针用于水中的库库比图里尔 (CB[n]) 组件.
- 描述CB[7]和CB[8]在溶液和固态中的聚合行为.
- 为了评估CB[n]组件中的氧化物对减少的稳定性.
主要方法:
- 电子偏磁共振 (EPR) 谱学被用来研究氧化物激素.
- 单晶X射线衍射被用来确定CB[8]组件的固态结构.
- 研究是在水溶液中进行的.
主要成果:
- 氧化物自由基被成功地用作客体,通过EPR在水中探测CB[n]组件.
- 在溶液和固体状态下,CB[7]和CB[8]都表现出显著的聚合.
- 一个单晶X射线结构揭示了CB[8]与4-methoxy-TEMPO形成超分子三角形.
- 封装的氧化物对生物相关的减少表现出了显著的抵抗力,这归因于致癌效应.
结论:
- 氧化物激素作为有效的探针,用于水性环境中的库库比图里尔超分子组合.
- 在CB[7]和CB[8]组件中,carcerand效应为封装的氧化物提供了对减少的显著保护.
- 这些发现突出了CB[n]宏循环在稳定客分子方面的潜力.
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