Publications by authors named "Ai-Ling Guan"
A new fluorescence sensor for determining water content in organic solvents has been successfully demonstrated based on a fluorescent dye. 4'-N,N-dimethylamino-4 methylacryloylamino chalcone (DMC), in which the charge donor and acceptor parts were both contained, was copolymerized with acrylamide, hydroxyethyl methacrylate and triethylene glycol dimethacrylate onto glass surface. The fluorescence intensity of DMC decreased with increasing of water content in organic solvents owing to the formation of solvate complexes.
View Article and Find Full Text PDFA new fluorescent dye, N-allyl-4-morpholinyl-1,8-naphthalimide (AMN), was synthesized as a fluorescence indicator in the fabrication of a sensor for determining water content in organic solvents. To prevent leakage of the fluorophore, AMN was photo-copolymerized with acrylamide, (2-hydroxyethyl)methacrylate, and triethylene glycol dimethacrylate on a glass surface treated with a silanizing agent. The sensing mechanism is based on the solvatochromic feature of the covalently immobilized AMN.
View Article and Find Full Text PDFArticle Synopsis
- The paper outlines the development of a fluorescence ratiometric sensor for measuring pH levels, using a specific pH-sensitive dye and a reference dye to ensure accurate readings.
- The dyes were combined with other materials to securely immobilize them and prevent leakage, leading to reliable results within an acidic pH range of 1.5 to 5.0.
- The sensor demonstrated good reproducibility, quick response times, and resistance to interference from common impurities, making it suitable for wastewater analysis and other applications.