对苯二甲酸
化学
催化作用
双金属片
过氧化氢
检出限
钴
生物催化
核化学
激进的
水溶液中的金属离子
无机化学
葡萄糖氧化酶
色谱法
铜
金属
生物传感器
有机化学
离子液体
生物化学
聚酯纤维
作者
Ting Zhao,鐘偉 江,Shu Jun Zhen,Cheng Huang,Yuan Fang Li
标识
DOI:10.1007/s00604-019-3290-3
摘要
A bimetallic organic gel was prepared by mixing the bridging ligand 2,4,6-tri(4-carboxyphenyl)-1,3,5-triazine with Cu(II) and Co(II) ions at room temperature. The resulting metal-organic gel (MOG) shows enhanced peroxidase-like activity, most likely due to the synergetic redox cycling between Co(III)/Co(II) and Cu(II)/Cu(I) pairs. These accelerate interfacial electron transfer and generation of hydroxy radicals. The MOG can catalyze the reaction of H2O2 with terephthalic acid (TPA), producing a blue fluorescence product with the maximum excitation/emission at 315/446 nm. The enzyme mimic was used to design a fluorometric method for H2O2 that has a 81 nM detection limit. H2O2 is also formed by glucose oxidase-assisted oxidation of glucose by oxygen, and an assay for glucose was worked out based on the above method. It has a 0.33 μM detection limit. This study may open up a new avenue to design and synthesize nanomaterial-based biomimetic catalysts with multiple metal synergistically enhanced catalytic activity for potential applications in biocatalysis, bioassays and nano-biomedicine.
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