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首页> 外文期刊>Electroanalysis >Catalytic Au electrodes based on SAMs of per(6-deoxy-6-thio-2,3-di-O-methyl)-beta-cyclodextrin
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Catalytic Au electrodes based on SAMs of per(6-deoxy-6-thio-2,3-di-O-methyl)-beta-cyclodextrin

机译:基于(6-脱氧-6-硫代-2,3-二-O-甲基)-β-环糊精的SAM的催化金电极

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摘要

A three-step sequential self-assembly procedure was applied in preparing gold electrodes modified in a stable and controlled way by a monolayer of thiolated beta-cyclodextrin (beta-CD), with methylene blue (MB) included in its cavity as the active component of the monolayer, and octanethiol as the nonelectroactive spacer blocking the electrode surface not occupied by beta-CD. MB acted as a mediator of electrons with respect to a solution soluble analyte, H2O2, and provided electrical contact between the electrode and solution resident enzyme, laccase, catalyzing reduction of oxygen to water.
机译:采用三步顺序自组装程序来制备金电极,该电极以单层硫醇化β-环糊精(β-CD)进行稳定和可控的修饰,其空腔中包含亚甲基蓝(MB)作为活性成分单分子层中的辛基硫醇,以及辛硫醇作为非电活性间隔基,可阻断未被β-CD占据的电极表面。 MB相对于溶液可溶的分析物H2O2充当电子的介质,并在电极和溶液中的驻留酶漆酶之间提供电接触,​​催化将氧气还原为水。

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