Potentiometric Liquid Membrane Sensors That Discriminate Linear Homologs and Geometrical/Positional Isomers of Dicarboxylates
Potentiometric Liquid Membrane Sensors That Discriminate Linear Homologs and Geometrical/Positional Isomers of Dicarboxylates
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区分二羧酸盐的线性同系物和几何/位置异构体的电位液膜传感器
DOI：
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发表时间：
1989
期刊：
影响因子：
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通讯作者：
T. Koike
中科院分区：
文献类型：
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作者：
M. Kataoka;Ryuichi Naganawa;K. Odashima;Y. Umezawa;E. Kimura;T. Koike
摘要本文介绍了一种以嗜酸性大环多胺1为传感元件的液膜传感器对二羧酸酯类化合物的一系列线性同源物（4-7）、几何异构体（8,9）和位置异构体（10-12）的电位鉴别。仔细设置pH条件，以便能够具体观察到对二阴离子形式客体的电位响应。柔性线性同分异构体（4-7）的区别很小，而刚性结构的几何同分异构体（8,9）和位置同分异构体（10-12）的区别很大。电位响应的选择性被发现与报道的具有与1相关结构的大环多胺在水中显示的主客体络合的选择性有很好的相关性。
Abstract Potentiometric discrimination of series of linear homologs (4-7), geometrical isomers (8,9), and positional isomers (10-12) of dicarboxylate guests by a liquid membrane sensor containing Iipophiiic macrocyclic polyamine 1 as a sensory element is described. the pH conditions were carefully set so that the potentiometric response to the dianionic forms of the guests could be specifically observed. Whereas only small discrimination was observed for the flexible linear homologs (4-7), marked discrimination was observed, for the geometrical isomers (8,9) and positional isomers (10-12) having rigid structures. the selectivities of the potentiometric response were found to correlate well with the reported selectivities of host-guest complexation in water displayed by macrocyclic polyamines having the structures related to 1.