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A rapid method for the sensitive detection of phenytoin (PHT) by branched gold nanoparticles (B-AuNPs) is described. These nanoparticles were synthesized by adding methanol as the reducing agent and poly(ethylene glycol) as the stabilizer at 70 °C. The B-AuNPs are red in color with an absorption maximum at 540 nm when prepared in situ. However, the color becomes increasingly weaker when PHT is present...
Amidosulfonic acid-capped silver nanoparticles (ASA-AgNPs) were synthesized and characterized by UV–Vis, FTIR and TEM methods. It was found that in the presence of lamotrigine (LTG) in aqueous solution, the ASA-AgNPs undergo a visual color change from yellow to red to violet. This corresponds to absorption peaks at 390, 450 and 620 nm depending on the concentration of LTG. TEM images confirmed that...
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