Department of Analytical Chemistry, Faculty of Chemistry, University of Murcia, 30100 Murcia, Spain.
Talanta. 2011 Sep 30;85(4):1876-81. doi: 10.1016/j.talanta.2011.07.027. Epub 2011 Jul 18.
Two open substituted benzodipyrroles were tested as hydrogen-bond-forming anion ionophores for the development of anion-selective electrodes. These compounds were incorporated in plasticized polymeric membranes with different plasticizers, using different membrane compositions to explore their response towards several anions. The electrodes constructed with membranes containing 2-nitrophenyl octyl ether and a 0.5 molar ratio ionic additive/ionophore showed pronounced anti-Hofmeister behaviour, providing a significantly enhanced response towards the divalent anions sulfate, sulfite, thiosulfate and oxalate. The selected electrodes were also evaluated in terms of detection limits and selectivity. (1)H NMR experiments were carried out in an attempt to explain some aspects of the behaviour observed.
两种开位取代苯并二吡咯被测试为氢键形成的阴离子载体，用于开发阴离子选择性电极。这些化合物被掺入不同增塑剂的塑料化聚合物膜中，使用不同的膜组成来探索它们对几种阴离子的响应。由含有 2-硝基苯辛基醚和 0.5 摩尔比离子添加剂/载体的膜制成的电极表现出明显的反 Hofmeister 行为，对硫酸盐、亚硫酸盐、硫代硫酸盐和草酸盐等二价阴离子表现出显著增强的响应。所选电极还根据检测限和选择性进行了评估。（1）H NMR 实验进行了尝试，以解释观察到的行为的某些方面。
