Smart microfluidic biosensor with polyamine saccharide-GluOx-modified LIG electrodes and real-time ML signal deconvolution for glucose monitoring.

This study reports a highly sensitive, flexible, and intelligent microfluidic glucose biosensor integrating machine learning (ML)-optimized and laser-induced graphene (LIG) electrodes with electrodeposited polyamine saccharide-functionalized glucose oxidase (CS/GluOx) crosslinked with polyethene glycol (PEG). LIG fabrication parameters were optimized using a supervised ML model (random forest regression), achieving R = 0.92 and RMSE = 0.

Putrescine Detection Via PMMA-Zinc(II) Complex Optical Chemosensor: Meat Spoilage Screening Tool.

Biogenic amines serve as valuable indicators within the food industry, as they can identify signs of food spoilage. Excessive intake of these amines can potentially result in scombroid poisoning, headaches, respiratory issues, and other health-related issues. In recent times, more streamlined and rapid techniques for detecting biogenic amines have emerged, utilizing metal complex as optical sensing materials.

Exploring anthraquinone derivatives for effective peroxide detection in reheated palm oil: Insights and innovations.

This study explores the reactivity of anthraquinone derivatives, specifically anthraquinone (AQ), 1,4-dihydroxyanthraquinone (1,4-DHAQ), and 1,2-dihydroxyanthraquinone (1,2-DHAQ), toward peroxide detection in reheated palm oil (RPO), with a focus on structure-reactivity relationships. Using a combination of UV-visible, fluorescence, and H NMR spectroscopy, we demonstrated that only 1,2-DHAQ exhibited significant reactivity with tert-butyl hydroperoxide (t-BuOOH), attributed to its accessible hydroxyl group at the C2 position. In contrast, AQ and 1,4-DHAQ showed negligible activity due to non-reactive carbonyl centers and intramolecular hydrogen bonding, respectively.

Unraveling the surface properties of PMMA/azobenzene blends as coating films with photoreversible surface polarity.

Various reports demonstrated that azobenzene derivatives are the chromophore of choice in photoresponsive surfaces showing reversible surface polarity. Hitherto the surface study of coating films based on polymer/azobenzene blends using contact angle measurements remained unexplored. To provide insight into the surface polarity of polymer/dye blend films, poly(methyl methacrylate) (PMMA) blends containing photoresponsive 4-hydroxy-4'-methylazobenzene (AZO1) and 4,4'-dimethylazobenzene (AZO2) as coating films on clear glass substrates are investigated in this work.

Characteristics of Dye-Sensitized Solar Cell Assembled from Modified Chitosan-Based Gel Polymer Electrolytes Incorporated with Potassium Iodide.

In the present work, phthaloyl chitosan (PhCh)-based gel polymer electrolytes (GPEs) were prepared using dimethylformamide (DMF) as a solvent, ethyl carbonate (EC) as a co-solvent, and a set of five quaternaries of potassium iodide (KI) as a doping salt, which is a mixed composition of iodine (I). The prepared GPEs were applied to dye-sensitized solar cells (DSSC) to observe the effectiveness of the electrolyte, using mesoporous TiO, which was sensitized with N3 dye as the sensitizer. The incorporation of the potassium iodide-based redox couple in a polymer electrolyte is fabricated for dye-sensitized solar cells (DSSCs).