14 Result(s)
within
Yan-Ming Liu
Analytical Chemistry
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Article
Etching of Ag nanoparticles triggered bidirectional regulation for electrochemiluminescence ratiometric immunoassay
A highly efficient ratiometric electrochemiluminescence (ECL) immunoassay was explored by bidirectionally regulating the ECL intensity of two luminophors. The immunoassay was conducted in a split-type mode con...
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Article
Culture and in situ H2O2-mediated electrochemical study of cancer cells using three-dimensional scaffold based on graphene foam coated with Fe3O4 nanozyme
For real-time evaluation of the cell behavior and function under in vivo-like 3D environment, the 3D functionalized scaffolds simultaneously integrate the function of 3D cell culture, and electrochemical sensi...
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Article
l-Histidine-DNA interaction: a strategy for the improvement of the fluorescence signal of poly(adenine) DNA-templated gold nanoclusters
An interesting phenomenon is described that the fluorescence signal of poly(adenine) (A) DNA-templated gold nanoclusters (AuNCs) is greatly improved in the presence of l-histidine by means of l-histidine-DNA int...
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Article
Highly selective fluorimetric and colorimetric sensing of mercury(II) by exploiting the self-assembly-induced emission of 4-chlorothiophenol capped copper nanoclusters
A highly stable copper nanoclusters (CuNC) carrying 4-chlorothiophenol as a protective ligand is described. They display self-assembly-induced emission with excitation/emission maxima at 330/605 nm even in ne...
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Article
Development of Rapid and Label-Free Fluorescence Sensing of Tetracyclines in Milk Based on Poly(Adenine) DNA-Templated Au Nanoclusters
In this work, a rapid and label-free fluorescent sensing method has been established for tetracycline (TC) detection by using poly(adenine) (poly A) DNA-templated Au nanoclusters (AuNCs) as fluorescence indica...
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Article
Determination of the activity of alkaline phosphatase by using nanoclusters composed of flower-like cobalt oxyhydroxide and copper nanoclusters as fluorescent probes
The authors describe a sensitive fluorometric method for the determination of the activity of alkaline phosphatase (ALP). It is based on the use of a composite prepared consisting of flower-like cobalt oxyhydr...
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Article
A fluorescent glucose bioassay based on the hydrogen peroxide-induced decomposition of a quencher system composed of MnO2 nanosheets and copper nanoclusters
The authors describe a fluorometric glucose assay that is based on the use of MnO2 nanosheets and copper nanoclusters (CuNCs) acting as nanoprobes. The CuNCs were synthesized by using bovine serum albumin as a te...
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Article
Electrochemical biosensor for simultaneous determination of guanine and adenine based on dopamine-melanin colloidal nanospheres–graphene composites
Dopamine-melanin colloidal nanospheres (Dpa-melanin CNDs)–graphene composites-modified glassy carbon electrode (GCE) was prepared by a simple procedure and then successfully used to simultaneously determine gu...
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Article
Electrochemical sensing of catechol using a glassy carbon electrode modified with a composite made from silver nanoparticles, polydopamine, and graphene
We report on the modification of a glassy carbon electrode with a composite consisting of silver nanoparticles (AgNPs), polydopamine, and graphene to give an electrochemical sensor for catechol. The composite ...
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Article
Disposable immunoassay for hepatitis B surface antigen based on a graphene paste electrode functionalized with gold nanoparticles and a Nafion-cysteine conjugate
We report on the modification of a graphene paste electrode with gold nanoparticles (AuNPs) and a Nafion-L-cysteine composite film, and how this electrode can serve as a platform for the construction of a nove...
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Article
Determination of thiol compounds by solid-phase extraction using multi-walled carbon nanotubes as adsorbent coupled with high-performance liquid chromatography-fluorescence detection
We describe a method for solid-phase extraction of biogenic thiols using multi-walled carbon nanotubes as adsorbent, and their subsequent determination via HPLC and fluorescence detection. The fluorogenic reag...
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Article
LC Determination of Thiols Derivatized with 4-(Aminosulfonyl)-7-fluoro-2,1,3-benzoxadiazole after SPE
Solid-phase extraction (SPE) coupled with high-performance liquid chromatography–fluorescence detection (LC–FL) was developed for the determination of three thiol compounds including glutathione, cysteine and ...
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Article
Highly Sensitive Chemiluminescence Detection of Norfloxacin and Ciprofloxacin in CE and Its Applications
A highly sensitive and rapid method for the determination of norfloxacin and ciprofloxacin was developed using capillary electrophoresis coupled with chemiluminescence detection. The chemiluminescence detectio...
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Article
LC Analysis of Aliphatic Primary Amines and Diamines After Derivatization with 2,6-Dimethyl-4-quinolinecarboxylic Acid N-Hydroxysuccinimide Ester
A method for sensitive simultaneous analysis of aliphatic primary amines and diamines has been developed and validated. The compounds were analyzed by reversed-phase high-performance liquid chromatography afte...
