邻近组件在三稳定的作用 [2]
Yuping Wang1, Tao Cheng2, Junling Sun1
1Department of Chemistry , Northwestern University , 2145 Sheridan Road , Evanston , Illinois 60208 , United States.
Journal of the American Chemical Society
|September 26, 2018
概括
这项研究研究了在 [2] 罗塔中完全减少的环氧 (CBPQT(0)的中性状态. 研究人员发现了新的π-捐赠识别相互作用,涉及CBPQT(0)单元和四烯受体.
科学领域:
- 超分子化学
- 有机化学
- 材料科学
背景情况:
- 在氧化 (CBPQT4+) 和部分降解 (CBPQT2(•+)) 状态下,Cyclobis (?? 甲酸) 环氧化 (CBPQT4+) 呈现氧化-依赖性识别特性.
- 在机械互锁分子 (MIM) 中,完全减少的中性状态 (CBPQT(0) 的识别行为仍然未被探索.
- 了解CBPQT的作用对于设计具有可调节结合关系的新型MIM至关重要.
研究的目的:
- 合成和研究一个包含CBPQT环的三稳定[2]rotaxane.
- 探索CBPQT环在其不同氧化还原状态中的分子识别特性.
- 阐明CBPQT(0)状态与罗塔xane的子组件中的受体单元的结合相互作用.
主要方法:
- 合成具有CBPQT环和双二,四二和三识别位点的 [2]rotaxane.
- 分析CBPQT环和子组件之间的选择性识别事件的解决状态调查.
- 非共价结合相互作用的表征,特别关注CBPQT状态.
主要成果:
- 成功合成了一种三稳定的 [2]rotaxane,证明CBPQT4+/triazole和CBPQT2(•+)/双基离子之间的选择性识别.
- 确认中性CBPQT(0)环和四烯受体单元之间的新型π捐赠相互作用.
- CBPQT(0)状态作为一个π-捐赠者,扩展其识别能力超出以前已知的捐赠者-接受者和激素配对相互作用.
结论:
- 这项研究成功地证明了完全减少的CBPQT(0)状态作为π-捐赠识别单元的作用.
- 这一发现扩大了对机械互锁分子的可氧化调节分子识别的理解.
- 在罗塔中观察到的跨环相互作用与更简单的有机分子中的邻近组参与相似.
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