The developed Pt NP-oxTMB NW-based ICTS has been demonstrated to be a new, accurate, sensitive, selective, and rapid immunosensor for quantitative detection of antigens such as human chorionic gonadotropin (HCG).

2020年11月15日 · OxTMB, which exhibits strong photothermal effect under near-infrared light, can transform the analysis signal into heat with a pen-style digital thermometer as the signal reader. Therefore, oxTMB has the potential for simple and instrument-free analyses.

2024年11月1日 · A colorimetric sensor for H 2 O 2 was developed by utilizing oxTMB nanobelts as the colorimetric reagent. Fe 2+ could catalyze the oxidization of TMB by H 2 O 2 into a blue color product (oxTMB), which further aggregated into …

类过氧化物纳米酶为双底物纳米酶，它能够在第一底物氢受体（如H2O2）存在的条件下，催化氢受体产生大量的氧化自由基，进而将第二反应底物氢供体快速氧化。 根据氢供体的不同，类过氧化物纳米酶可以模拟 过氧化物酶 、谷胱甘肽过氧化物酶、脂质过氧化物酶等多种酶活性。 类过氧化物酶的氢受体多种多样，例如：辣根过氧化物酶的氢受体是H2O2，脂质过氧化物酶的氢受体 …

2019年4月10日 · Recently, we have observed that TMB can be oxidized by H 2 O 2 into a very stable and black oxTMB nanowires (noted as oxTMB NWs) with the catalysis of given amounts of bare Pt NPs or antibody-bound Pt NPs under certain conditions to realize well reproducible assay and great signal amplification.

2024年5月1日 · oxTMB-mediated colorimetric and ratiometric fluorescent assay was demonstrated. A high-throughput PAD was fabricated for on-site rapid visual detection. Dual signals can prove each other with high accuracy. The proposed platform had facile, portable, and visual advantages in POCT.

2020年11月4日 · 该体系选择了九种具有不同特性（不同取代基和不同取代数）的联苯胺衍生物，并用四个典型的TMB生色系统（HRP，纳米酶，DNAzyme，光敏氧化方案）进行了研究。 在现有联苯胺底物用于过氧化物酶的测定中，TMB表现出最高的灵敏度，更好的有色产物色纯度和合理的氧化产物稳定性。 与TMB以外的两种四取代的联苯胺衍生物进行比较，TMB的性能（灵敏 …

2018年11月28日 · In the presence of H 2 O 2, DMSN-Fe 3 O 4 NPs catalyzed the oxidation of TMB to form the oxidized and therefore blue-colored TMB (oxTMB) featuring characteristic absorbances at 370 and 652 nm (Figure 2a).

2024年8月23日 · Its chromogenic reaction is based on the catalytic oxidation of TMB by HRP in the presence of H 2 O 2, converting it from a reduced state to an oxidized state (oxTMB), and it changes from transparent to blue and finally yellow.

Herein, oxidized 3,3',5,5'-tetramethylbenzidine (oxTMB) nanobelts were developed to enhance the colorimetric and paper-based sensing of H 2 O 2. It was found that the minor component of Fe 2+ in Na 2 SO 4 reagent could catalyze the oxidization of TMB by H 2 O 2 into positively charged oxTMB, which was further assembled into dark blue oxTMB ...