化学
显色的
卟啉
过氧化物酶
薗头偶联反应
基质(水族馆)
比色法
微型多孔材料
组合化学
检出限
共轭微孔聚合物
共轭体系
葡萄糖氧化酶
催化作用
光化学
聚合物
有机化学
色谱法
酶
钯
海洋学
地质学
作者
Qi Liu,Qiqi Sun,Jingshun Shen,Yuming Zhang,Hao Li,Shou-Wen Yu,Yanli Chen,Xiyou Li,Jianzhuang Jiang
标识
DOI:10.1142/s1088424623500426
摘要
The development of peroxidase mimics with enhanced peroxidase-like activity is critical to building a convenient and fast glucose colorimetric sensor. Herein, a porphyrin-based conjugated microporous polymer (FePCMP) was synthesized through a Pd-/CuI catalyzed Sonogashira coupling reaction. The FePCMP exhibited specific and superior POD-like activity evaluated by the fast oxidation of 3,3[Formula: see text],5,5[Formula: see text]-tetramethylbenzidine (a chromogenic substrate, TMB) to form the blue product (oxTMB) in the presence of H 2 O 2 . The outstanding POD-like activity is mainly ascribed to the Fe-N 4 active sites and the cross-linked porous framework of FePCMP. Furthermore, the FePCMP was applied in selective colorimetric detection of glucose through a glucose oxidase biocatalytic cascade reaction with a low detection limit (LOD) of 0.031 [Formula: see text]M in the linear range of 0.2–5 [Formula: see text]M. This study not only provided a new method for the design and synesis of specific POD-like nanozymes, but also the prepared FePCMP can be used as a POD-like enzyme for the colorimetric detection of other molecules, such as cholesterol, acetylcholine, etc.
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