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Porphyrin-Based Porous Organic Polymer as Peroxidase Mimics for Sulfide-Ion Colorimetric Sensing
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2020-07-08 , DOI: 10.1021/acssuschemeng.0c03045 Yanhong Li 1 , Yishan Fang 2 , Wenqiang Gao 1 , Xiaojun Guo 1 , Xiaomei Zhang 1
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2020-07-08 , DOI: 10.1021/acssuschemeng.0c03045 Yanhong Li 1 , Yishan Fang 2 , Wenqiang Gao 1 , Xiaojun Guo 1 , Xiaomei Zhang 1
Affiliation
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The effective synthesis of functional nanoplatforms for simple, selective, and sensitive hydrogen sulfide detection has received significant attention because of the toxicity of hydrogen sulfide. Here, a new porphyrin-based porous organic polymer, FePPOPEPA, was fabricated through a Pd-/CuI-catalyzed Sonogashira cross-coupling reaction between tris(4-ethynylphenyl)amine and iron(III) 5,10,15,20-tetrakis-(4′-bromophenyl)porphyrinato (FeTBrPP). Results showed that FePPOPEPA has a porous framework, high BET surface areas, wide pore size distribution, abundant surface catalytic active sites, and excellent stability as well as reusability. In the presence of H2O2, FePPOPEPA showed high peroxidase-like activity toward 3,3′,5,5′-tetramethylbenzidine. Based on these findings, FePPOPEPA was used for the first time as an efficient colorimetric probe for sensitive and selective detection of sulfide ions with a low detection limit (0.013 μM) within 3 min. The feasibility of this method for real water samples was validated via a standard addition experiment. Moreover, the catalytic inhibition mechanism of S2– to FePPOPEPA was disclosed by X-ray photoelectron spectroscopy spectra.
中文翻译：
卟啉基多孔有机聚合物作为过氧化物酶的模拟物，用于硫化物离子比色传感
由于硫化氢的毒性，用于简单，选择性和灵敏的硫化氢检测的功能性纳米平台的有效合成备受关注。在此，通过三（4-乙炔基苯基）胺与铁（III）5,10,15,20-的Pd- / CuI催化的Sonogashira交叉偶联反应，制备了一种新的基于卟啉的多孔有机聚合物FePPOP EPA。四（4'-溴苯基）卟啉（FeTBrPP）。结果表明，FePPOP EPA具有多孔结构，较高的BET表面积，宽的孔径分布，丰富的表面催化活性位点以及出色的稳定性和可重复使用性。在H 2 O 2存在下，FePPOP EPA对3,3'，5,5'-四甲基联苯胺表现出高过氧化物酶样活性。基于这些发现，FePPOP EPA首次用作有效的比色探针，可在3分钟内灵敏且选择性地检测出低检测限（0.013μM）的硫化物离子。通过标准添加实验验证了该方法用于实际水样的可行性。此外，X射线光电子能谱还揭示了S 2-对FePPOP EPA的催化抑制机理。
更新日期：2020-07-27
中文翻译：
卟啉基多孔有机聚合物作为过氧化物酶的模拟物，用于硫化物离子比色传感
由于硫化氢的毒性，用于简单，选择性和灵敏的硫化氢检测的功能性纳米平台的有效合成备受关注。在此，通过三（4-乙炔基苯基）胺与铁（III）5,10,15,20-的Pd- / CuI催化的Sonogashira交叉偶联反应，制备了一种新的基于卟啉的多孔有机聚合物FePPOP EPA。四（4'-溴苯基）卟啉（FeTBrPP）。结果表明，FePPOP EPA具有多孔结构，较高的BET表面积，宽的孔径分布，丰富的表面催化活性位点以及出色的稳定性和可重复使用性。在H 2 O 2存在下，FePPOP EPA对3,3'，5,5'-四甲基联苯胺表现出高过氧化物酶样活性。基于这些发现，FePPOP EPA首次用作有效的比色探针，可在3分钟内灵敏且选择性地检测出低检测限（0.013μM）的硫化物离子。通过标准添加实验验证了该方法用于实际水样的可行性。此外，X射线光电子能谱还揭示了S 2-对FePPOP EPA的催化抑制机理。
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