Corrole-based ion-selective electrodes
Corrole-based ion-selective electrodes
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DOI：
10.1142/s1088424609001510
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发表时间：
2009-11-01
影响因子：
1.5
通讯作者：
Paolesse, Roberto
中科院分区：
文献类型：
--
作者：
Lvova, Larisa;Di Natale, Corrado;Paolesse, Roberto
不同的咔咯衍生物已被开发为离子选择性电极（ISE）的发展作为离子载体。所用化合物为游离碱5，10，15-三苯基可咯、相应的Mn和Fe氯化物络合物、5，10，15-三（4-叔丁基苯基）可咯的Cu络合物和2，3，17，18-四乙基，7，8，12，13-四甲基可咯的Fe氯化物络合物。将可咯分散在聚氯乙烯聚合物基体中，并使用不同的增塑剂制备选择性膜。所开发的离子选择电极已被测试用于检测模型分析物，并详细研究了其工作机理。在游离碱的情况下，结果表明，它是难以获得高选择性离子选择性，由于大环高灵敏度的背景溶液pH值。另一方面，锰衍生物被证明是高选择性的氯离子检测，性能上级相应的锰卟啉为基础的离子选择性。最后，铜和铁的衍生物是非常有前途的离子载体检测亲水性阴离子，如碳酸根和磷酸一氢根离子。
Different corrole derivatives have been exploited as ionophores for the development of ion-selective electrodes (ISEs). The compounds used are free-base 5,10,15-triphenylcorrole, the corresponding Mn and Fe chloride complexes, the Cu complex of 5,10,15-tris(4-tert-butylphenyl)-corrole and the Fe chloride complex of 2,3,17,18-tetraethyl, 7,8,12,13-tetramethylcorrole. Corroles have been dispersed in the polyvinyl chloride polymeric matrix and different plasticizers have been used for the preparation of selective membranes. The developed ISEs have been tested for the detection of model analytes and the working mechanism has been investigated in detail. In the case of free-base corrole, the results showed that it is difficult to obtain high selective ISEs, due to the macrocycle high sensitivity to the background solution pH. On the other hand, Mn derivative are shown to be highly selective for chloride ion detection, with performances superior to the corresponding Mn porphyrin-based ISEs. Finally both Cu and Fe derivatives are very promising ionophores for the detection of hydrophilic anions, such as carbonate and monohydrogen phosphate ion.