Binding Constants and Their Measurement

Binding Constants and Their Measurement
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结合常数及其测量

DOI:
10.1002/9780470661345.smc018
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发表时间:
2012
期刊:
Proceedings of the National Academy of Sciences
影响因子:
--
通讯作者:
P. Thordarson
P. Thordarson
中科院分区:
--
文献类型:
--
作者:
P. Thordarson

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本章讨论超分子化学中的结合常数是如何确定的。它分为三个主要部分。本章的第一节也是最大的一节详细介绍了用于描述超分子平衡的关键数学方程,包括常见的方程,如1:1、1:2和二聚化,以及较少遇到的2:1、2:2和线性聚集模型。还提供了如何将这些方程与常用的实验技术(如核磁共振、UV-Vis、荧光光谱以及量热法)一起使用的详细信息。下一节然后讨论用于测定化学计量的方法,包括约伯的方法。最后一节涉及数据分析,包括模型选择和比较、全局分析、不确定度估计、软件考虑,以及对可用于分析超分子滴定数据的选定软件包的简要回顾。还包括文献中具有代表性的例子,以突出本章所涵盖的主题。 关键词: 结合常数; 离解常数; 核磁共振滴定; UV-Vis滴定; 荧光滴定; 数据分析; 主客复合体; 二聚化; 自联想; 用于结合研究的软件
This chapter is concerned with how binding constants in supramolecular chemistry are determined. It is divided into three main sections. The first and largest section of this chapter details the key mathematical equations used to describe supramolecular equilibria, including common ones such as 1:1, 1:2, and dimerization as well as less frequently encountered 2:1, 2:2, and linear aggregation models. Details are also provided on how these equations are used with commonly used experimental techniques such as NMR, UV–vis, and fluorescence spectroscopy as well as calorimetry. The next section then discusses methods used for the determination of stoichiometry, including Job's method. The final section is concerned with data analysis, including model selection and comparison, global analysis, estimation of uncertainties, software consideration, and a brief review of selected software packages available for analyzing data from supramolecular titrations. Representative examples from the literature are also included to highlight the topics covered in this chapter. Keywords: binding constants; dissociation constants; NMR titration; UV–vis titration; fluorescence titration; data analysis; host–guest complexes; dimerization; self-association; software for binding studies
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