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动态惰性宏循环欧洲(III) 酸盐受体的受体
Thibaut L M Martinon1, Mandapati V Ramakrishnam Raju1, Valérie C Pierre1
1Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States.
Inorganic chemistry
|June 20, 2023
概括
新的欧(III) 复合物与1,2-基酸 (HOPO) 连接体显示出对酸盐的高度亲和力和选择性. 环顶复合体表现出最强的酸盐结合,证明了连接体设计对受体性能的影响.
科学领域:
- 协调化学 协调化学
- 超分子化学 超分子化学
- 环境科学 环境科学
背景情况:
- 酸盐是水体中的关键污染物,并与高酸盐血症有关.
- 有效和选择性的酸盐受体对于环境修复和医疗应用至关重要.
- 宏观环形配体为设计基于金属的受体提供独特的结构框架.
研究的目的:
- 为了合成和评估新的宏环三双 1,2-氧二 (HOPO) 欧洲 ((III) 复合物作为酸盐受体.
- 为了研究不同联结帽 (cyclen,cyclam,TACN,TACD) 对酸盐结合亲和力,选择性和运动性质的影响.
- 了解这些三脚式HOPO-europium (III) 系统中的结构-属性关系,用于离子识别.
主要方法:
- 合成四个宏循环的三双 1,2-氧二酸盐 (HOPO) 欧洲 (III) 复合物.
- 使用发光研究 (在可溶性允许的情况下) 评估酸盐结合亲和力和选择性.
- 在欧 (III) 复合体中对协调数和内部球体水分子的分析.
- 评估合成复合物的动力惰性和稳定性.
主要成果:
- 三种复合物 (EuIII-cyclen-HOPO,EuIII-cyclam-HOPO,EuIII-TACN-HOPO) 在酸盐结合方面得到了成功的评估.
- 欧III-环-HOPO对酸盐表现出最高的亲和力,取代了两个内部球的水分子.
- 所有评估的复合物都对酸盐具有较高的选择性,而不是其他离子,包括酸盐,并且非常稳定.
- 连接体盖的微小修改显著影响了连接体交换率和酸盐结合亲和力.
结论:
- 宏循环HOPO-europium (III) 复合体是酸盐的有效和选择性受体.
- 环联体盖在本系列中为高亲和酸盐结合提供了最佳的结构特征.
- 连接体设计在调整三脚式HOPO基离子受体的动力学和热力学特性方面发挥着至关重要的作用.
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