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Enzyme-free colorimetric detection of biothiols based on the photoinduced oxidation of 3,3′,5,5′-tetramethylbenzidine
Realizing the rapid and on-site detection of biothiols in complex biological and food samples using simple assays and devices remains a major...
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Bioenzyme-free colorimetric assay for creatinine determination based on Mn3O4 nanoparticles catalyzed oxidation of 3,3′,5,5′-tetramethylbenzidine
Mn 3 O 4 nanozyme with good oxidase-like activity was successfully synthesized. The prepared Mn 3 O 4 nanozyme can directly and effectively catalyze the...
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3,3′,5,5′-Tetramethylbenzidine and polyetherimide decorated silver nanoparticles for colorimetric Mn2+ ions detection in aqueous solution
In this work, colorimetric Mn 2+ ions detection was developed using 3,3′,5,5′-tetramethylbenzidine (TMB) and polyetherimide (PEI) decorated silver...
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3,3′,5,5′-tetramethylbenzidine as multi-colorimetric indicator of chlorine in water in line with health guideline values
Sanitizing solutions against bacterial and viral pathogens are of utmost importance in general and, in particular, in these times of pandemic due to...
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“Turn-on” fluorometric probe for α-glucosidase activity using red fluorescent carbon dots and 3,3′,5,5′-tetramethylbenzidine
A turn-on method for determining α-glucosidase activity is described using a chemical redox strategy in which the fluorescence of red fluorescent...
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A system composed of polyethylenimine-capped upconversion nanoparticles, copper(II), hydrogen peroxide and 3,3′,5,5′-tetramethylbenzidine for colorimetric and fluorometric determination of glyphosate
A dual (colorimetric and fluorometric) method is described for sensitive and selective determination of the herbicide glyphosate. It is based on the...
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Visual dual-mode aptasensor for non-small cell lung cancer exosome detection via HRP self-coupling enhanced oxidized iridium nanoparticle aggregation
The main reason for the high mortality rate of non-small cell lung cancer is that patients are usually diagnosed at an advanced stage of the disease....
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Detection of uric acid using colorimetric method based on iron-doped single-atom catalyst with peroxidase activity
Single-atom catalysts (SACs) have garnered considerable attention owing to their impeccable catalytic activity and unique ability to elucidate the...
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A dual-mode fluorometric/colorimetric sensor for sulfadimethoxine detection based on Prussian blue nanoparticles and carbon dots
A dual-mode (colorimetric/fluorescence) nanoenzyme-linked immunosorbent assay (NLISA) was developed based on Au-Cu nanocubes generating Prussian blue...
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Multifunctional N, Fe-doped carbon dots with peroxidase-like activity for the determination of H2O2 and ascorbic acid and cell protection against oxidation
Multifunctional N, Fe-doped carbon dots (N, Fe-CDs) were synthesized by the one-step hydrothermal method using ferric ammonium citrate and...
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FeNC nanozyme-based electrochemical immunoassay for sensitive detection of human epidermal growth factor receptor 2
The proof-of-concept of sensitive electrochemical immunoassay for the quantitative monitoring of human epidermal growth factor receptor 2 (HER2) is...
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Colorimetric Detection of Acid Phosphatase and Malathion Using NiCo2O4 Nanosheets as Peroxidase-Mimicking Activity
The establishment of a low-cost and facile approach for the assay of acid phosphatase (ACP) and its inhibitor is a research focus. In this paper, we...
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A Smartphone Colorimetric Development with TMB/H2O2/HRP Reaction System for Hydrogen Peroxide Detection and its Applications
AbstractThe residue and overproduction of hydrogen peroxide (H 2 O 2 ) can harm cellular dysfunction under oxidative stress conditions. The development...
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Analyte-Mediated Peroxidase-Mimicking Activity Enhancement of Cysteine-Capped Silver Nanoparticles for Colorimetric Detection of Copper Ions
AbstractA novel and efficient colorimetric assay was developed for the detection of copper ions (Cu 2+ ) in real environmental water based on...
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A colorimetric and electrochemical dual-mode Hg2+ sensor utilizing oxidase-like activity arising from the combination of Hg2+ and palladium metal-organic framework@graphene
Develo** convenient and reliable methods for Hg 2+ monitoring is highly important. Some precious metal nanomaterials with intriguing peroxidase-like...
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Mesoporous Cu2O–CuO/O–g-C3N4 nanocomposite with enhanced peroxidase-like activity for the colorimetric H2O2 sensing
Herein, Cu 2 O–CuO incorporated oxygen-doped g-C 3 N 4 has been utilized for the colorimetric sensing of H 2 O 2 by the oxidation of...
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Design and Synthesis of an Integrated Nanozyme by Immobilizing Glucose Oxidase on an Iron-Based Metal-Organic Framework for the Development of a Glucose Assay
AbstractConsidering the application prospects of a cascade catalytic system in biomedical analysis, it remains significant to develop a cascade...
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Black oxidized 3,3′,5,5′-tetramethylbenzidine nanowires (oxTMB NWs) for enhancing Pt nanoparticle-based strip immunosensing
It is well known that 3,3′,5,5′-tetramethylbenzidine (TMB) can be oxidized into blue or yellow oxidzed TMB (oxTMB) with the catalysis of peroxidase...
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High catalytic activity of gold nanoparticle-templated, tyrosine-rich peptide self-assemblies for 3,3′,5,5′-tetramethylbenzidine oxidation in the absence of hydrogen peroxide
In this study, gold nanoparticle-templated, tyrosine-rich peptide (YC 7 @AuNPs) self-assemblies were examined as peroxidase enzyme–mimic catalysts for...
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Silver nanoparticles deposited carbon microspheres nanozyme with enhanced peroxidase-like catalysis for colorimetric detection of Hg2+ in seafood
AbstractNovel methods for high-performance detection of Hg 2+ in seafood are critical for ensuring food safety and human health. Herein, Ag...
