401 Result(s)
within
Yi**g Yong
Chemistry
Characterization and Evaluation of Materials
Nanochemistry
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Article
Discrimination and simultaneous quantification of poly(ethylene terephthalate) and poly(butylene terephthalate) microplastics in environmental samples via gas chromatography-tandem mass spectrometry
A method has been developed to quantify PET and PBT microplastics (MPs) based on depolymerization and detection of depolymerization products by gas chromatography-tandem mass spectrometry (GC–MS/MS) without a...
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Article
CRISPR/Cas12a-mediated DNA-AgNC label-free logical gate for multiple microRNAs’ assay
CRISPR/Cas system has been widely applied in the assay of disease-related nucleic acids. However, it is still challenging to use CRISPR/Cas system to detect multiple nucleic acids at the same time. Herein, we ...
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Article
Preparation of hollowTiO2 nanospheres with highly porous surface for effective nucleating agents in supercritical carbon dioxide foaming of thermoplastic polyurethanes
In this study, hollow nanospheres of titanium dioxide (TiO2) are prepared and utilized as potential nucleating agents in supercritical carbon dioxide (scCO2) foaming process of thermoplastic polyurethanes (TPUs) ...
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Article
Evaluation of the effect of molecular weight change of konjac glucomannan on antioxidant and tyrosinase activities
The purpose of this study was to characterize the biological activity of konjac glucomannan (KGM) according to its molecular weight change. KGM-degrading bacterial strain, N3 was isolated from soil and named Baci...
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Article
Ultrasensitive and specific photoelectrochemical sensor for hydrogen peroxide detection based on pillar[5]arene-functionalized Au nanoparticles and MWNTs hybrid BiOBr heterojunction
A photoelectrochemical sensor for target detection of hydrogen peroxide was designed based on a new heterojunction nanocomposite which was sulfhydryl-borate ester–modified A1/B1-type pillar[5]arene (BP5)–func...
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Article
A dual-signal ratiometric electrochemical aptasensor based on Thi/Au/ZIF-8 and catalytic hairpin assembly for ultra-sensitive detection of aflatoxin B1
A dual-signal ratiometric electrochemical aptasensor has been developed for AFB1 detection using thionine/Au/zeolitic imidazolate framework-8 (Thi/Au/ZIF-8) nanomaterials and catalytic hairpin assembly (CHA) ...
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Article
Dispersive hierarchically porous composites based on defective MOFs as mixed-mode stationary phases for chromatographic separation
Defective metal–organic frameworks-based composites with excellent separation properties were obtained. The mesoporous metal–organic frameworks were selected and deliberately designed to be deficient, and the...
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Article
In situ growth of ZIF-67 to construct core–shell mosaic structural composites for efficient extraction of benzoylurea insecticides
A novel mosaic structure Silica@C/Co@ZIF-67 composite was synthesized by successfully embedding Co nanoparticles on the surface of silica spheres with the help of thermoplastic polyethyleneimine by carbon-redu...
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Article
Aptamer-functionalized gold nanoparticles for mercury ion detection in a colorimetric assay based on color change time as signal readout
A universal strategy for a rapid colorimetric method for Hg2+ in an aqueous solution is described. The specific binding of Hg2+ (thymine-Hg2+-thymine) with thiolated DNA-functionalized gold nanoparticles (AuNPs) ...
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Article
A study on the thermal aging characteristics of an electro-osmotic pump using a liquid crystal polymer as a packaging material
The generation of bubbles due to the poor barrier property of packaging materials with regard to gas or water permeability can be detrimental to the performance and stability of electro-osmotic (EO) pumps, as ...
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Article
Simultaneous detection of As(III/V), Cr(III/VI), and Fe(II/III) by a sensor array based on the morphology regulation of CeO2 oxidase
To develop a convenient method for simultaneous detection of As(III/V), Cr(III/VI), and Fe(II/III), three morphologies of CeO2 oxidase have been prepared. Based on the difference in oxidase activity and binding a...
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Article
Nanozyme based colorimetric detection of biogenic gaseous H2S using Ag@Au core/shell nanoplates with peroxidase-like activity
A highly sensitive and facile colorimetric assay is introduced for detecting biogenic gaseous H2S using peroxidase (POD)-like catalytic activity of silver core/gold shell nanoplates (Ag@Au NPls). H2S can react wi...
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Article
Research advances of SERS analysis method based on silent region molecules for food safety detection
Food safety is a critical issue that is closely related to people’s health and safety. As a simple, rapid, and sensitive detection technique, surface-enhanced Raman scattering (SERS) technology has significant...
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Article
Introduction of multilayered quantum dot nanobeads into competitive lateral flow assays for ultrasensitive and quantitative monitoring of pesticides in complex samples
A competitive fluorescent lateral flow assay (CFLFA) is proposed for direct, ultrasensitive, quantitative detection of common pesticides imidacloprid (IMI) and carbendazim (CBZ) in complex food samples by usin...
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Article
Fluorescent immunochromatographic test strip for therapeutic drug monitoring of methotrexate with high sensitivity and wide dynamic range
As a front-line chemotherapeutic drug for maintenance and consolidation therapy, methotrexate (MTX) has widely been applied to treat various tumors and some inflammatory diseases. However, because of its sever...
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Article
A novel fluorescent aptasensor based on 3D porous nitrogen-sulfur co-doped carbon mesh and hybridization chain reaction for sensitive detection of ochratoxin A
A novel three-dimensional (3D) porous nitrogen-sulfur co-doped carbon (N–S–C) mesh was synthesized and used for the first time as the quenching material to construct a fluorescent aptasensor for ochratoxin A (...
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Article
Simultaneous visual detection of multiple heavy metal ions by a high-throughput fluorescent probe
To develop simultaneous and in-situ detection techniques towards Cr(VI) and Mn(II), Eu/Tb@CDs with white fluorescence were prepared by a one-step hydrothermal method. With the increase of Cr(VI), all fluoresce...
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Article
Fluorene- and arylamine-based photo-crosslinkable hole transporting polymer for solution-processed perovskite and organic light-emitting diodes
Solution-processable techniques, including spin-coating, roll-to-roll printing, and ink-jet printing, are suitable for large-scale manufacturing and flexible displays owing to their cost-effective and simple f...
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Article
Sensitive electrochemical measurement of nitric oxide released from living cells based on dealloyed PtBi alloy nanoparticles
Nitric oxide (NO), as a vital signaling molecule related to different physiological and pathological processes in living systems, is closely associated with cancer and cardiovascular disease. However, the dete...
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Article
Effect of chemical structural properties of chitooligosaccharides on the immune activity of macrophages
The immunological effects according to the difference in the degree of deacetylation (DD) and molecular weight (MW) of chitosan purified from Hermetia illucens larvae were investigated. The DD of purified high mo...
