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4. Robust organohydrogel with flexibility and conductivity across the freezing and boiling temperatures of water

Author

Xiaoyi Sun, Dongyang Lou, Juan Li, Jiasheng Luo, Wang Congsen, and Zhiyong He

Subjects
chemistry.chemical_classification, Flexibility (anatomy), Materials science, 010405 organic chemistry, Polyacrylamide, Metals and Alloys, General Chemistry, Sulfonic acid, Conductivity, 010402 general chemistry, 01 natural sciences, Catalysis, 0104 chemical sciences, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, chemistry.chemical_compound, medicine.anatomical_structure, chemistry, Chemical engineering, Boiling, Materials Chemistry, Ceramics and Composites, medicine, Lithium chloride, Ethylene glycol
Abstract

A tough double-network (DN) organohydrogel, obtained by simply soaking a poly(2-acrylamido-2-methylpropane sulfonic acid)/polyacrylamide (PAMPS/PAAm) hydrogel in an ethylene glycol solution of lithium chloride, retains high mechanical performance, flexibility (-80 to 120 °C) and conductivity (-20 to 120 °C), paving the way towards broad applications.

Published
2019

8. C3N4 nanosheet-supported Prussian Blue nanoparticles as a peroxidase mimic: colorimetric enzymatic determination of lactate.

Author

Zhou, Dandan, Wang, Congsen, Luo, Junjun, and Yang, Minghui

Subjects
*PEROXIDASE, *PRUSSIAN blue, *HORSERADISH peroxidase, *DETECTION limit, *GALENA, *LACTATES
Abstract

Prussian Blue nanoparticles were deposited on g-C3N4 nanosheets. The resulting nanocomposite possesses peroxidase-like (POx) activity and can catalyze the oxidation of 3,3′,5,5′-tetramethylbenzidine at room temperature in the presence of H2O2. This leads to formation of a blue product with an absorption maximum at 650 nm. The formation of the Prussian Blue nanoparticles on the g-C3N4 nanosheets, and the POx-like activity of the composite were characterized in detail. The POx mimic was used for determination of L-lactic acid via detection of H2O2 that is produced by the enzyme lactate oxidase (LOx). The assay has a linear range that extends from 5 to 100 μM, and the detection limit is 2.2 μM. The method was successfully applied to the determination of L-lactic acid in spiked human serum. [ABSTRACT FROM AUTHOR]

Published
2019
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