测定二复合物的结合常数和离子流动性,随机硫化环二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二二
Jan Bílek1, Dušan Koval1, Veronika Šolínová1
1Electromigration Methods, Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Prague 6, Czechia.
Journal of separation science
|June 12, 2024
概括
这项研究量化了二酸盐 (DQs) 和硫酸环极酸盐 (S-CDs) 之间的强结合相互作用,使用亲和毛细管电泳. 确定的结合常数揭示了强大的复杂形成,对于理解性分离至关重要.
科学领域:
- 分析化学 分析化学
- 螺旋式分离 螺旋式分离
- 超分子化学 超分子化学
背景情况:
- 迪卡特 (DQs) 是功能性的有机分子,其反体最近通过毛细管电泳 (CE) 分离.
- 研究人员观察到,dcationic DQs和多重负电荷硫酸环极素 (S-CDs) 之间存在强烈的相互作用.
- 这些DQ-S-CD相互作用的结合强度仍未得到量化.
研究的目的:
- 量化二反体-环德克斯特林复合物的结合常数和离子流动性.
- 为了研究10对DQ反体和各种环极素 (CDs) 之间的非共价相互作用.
- 为了确定水性介质中DQ-CD复合体形成的强度.
主要方法:
- afinity毛细管电泳 (CE) 被用来确定结合常数.
- 使用非线性回归分析分析了有效移动性对CD度的依赖性.
- 实验是在背景电解质 (BGE) 中进行的,其 CD 度 (0.0-1.0 mM) 不同.
主要成果:
- 对于DQ-CD复合物的平均明显结合常数在13,600至547,400L/mol之间.
- 这项研究确定了DQ-CD复合物的离子流动性.
- 复合物表现出相对强大的结合,证实了最初的观察.
结论:
- 在Affinity CE中,成功量化了二乙烯基和硫酸环氧之间的强结合常数.
- 确定的结合常数为优化DQs的性分离方法提供了必要的数据.
- 这项工作阐明了控制CDs对DQ反体的识别的超分子相互作用.
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