磺酸基卟啉的电化学发光研究及应用
收稿日期: 2016-10-24
修回日期: 2016-12-14
网络出版日期: 2016-12-23
基金资助
国家自然科学基金（21575115, 21327005）、兰州市人才创新创业科技计划(2014-RC-39)、兰州市科技计划项目(2016-3-69)、电分析化学国家重点实验室开放课题资助(SKLEAC201603)、西北师范大学青年教师科研能力提升计划(NWNU-LKQN-14-19)资助.
Cathodic Electrochemiluminescence of Meso-tetra(4-sulfophenyl)porphyrin/Potassium Peroxydisulfate System
Received date: 2016-10-24
Revised date: 2016-12-14
Online published: 2016-12-23
以四(4-磺酸基苯基)卟啉（TSPP）为发光体，过硫酸钾（K2S2O8）为共反应剂，构建了一个新的电化学发光（ECL）体系. 在扫描范围为0~-1.5V时，该体系出现两个阴极ECL峰，分别为TSPP的还原峰（-0.8V）和K2S2O8 的还原峰 (-1.2V). 亚甲基蓝能有效猝灭四(4-磺酸基苯基)卟啉的电化学发光，根据猝灭效率与亚甲基蓝浓度的线性关系，建立了一种测定亚甲基蓝含量的新方法.
关键词： 电化学发光; 四(4-磺酸基苯基)卟啉; 阴极; K2S2O8; 亚甲基蓝
王艳凤 , 罗荻 , 陕多亮 , 卢小泉 . 磺酸基卟啉的电化学发光研究及应用[J]. 电化学, 2017 , 23(3) : 307 -315 . DOI: 10.13208/j.electrochem.161042
A new electrochemiluminescence (ECL) system in aqueous solution was constructed by using meso-tetra(4-sulfophenyl)porphyrin (TSPP) as a luminophoreand potassium peroxydisulfate (K2S2O8) as a reductive–oxidative coreactant. Upon sweeping from 0 V to -1.5 V, two cathodic ECL peaks were found simultaneously. One appeared at -0.8 V, which is corresponding to the reduction of TSPP, another at -1.2 V, that is attributed to the reduction of K2S2O8. And methylene blue could quench the ECL of TSPP effectively. In accordance with the linearity between quenching efficiency and the concentration of methylene blue, a method to determine methylene blue was established. The ECL mechanism was also studied through a series of experiments.
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