N-doped carbon quantum dots for the selective detection of OCl ions, bioimaging, and the production of FeO nanoparticles utilized in the synthesis of substituted imidazole.

Nitrogen-doped quantum dots (NCQD) were synthesized by solvothermal means using -phenylenediamine and l-tartaric acid. The resultant NCQD produced a high quantum yield (40.3%) and a vivid green fluorescence. They were about 6 nm in size. The NCQD is useful in HeLa cell bioimaging investigations and is used for the fluorescence detection of OCl ions. The quantum dots' Limit of Detection (LoD) was discovered to be 40 nM. Additionally, cytotoxicity testing was conducted, and we found out that HeLa cells safely endured up to 6.5 mg ml of NCQD. Furthermore, NCQDs were employed to synthesize FeO nanoparticles, with the quantum dots acting as a reducing and stabilizing agent. The nanoparticles exhibited remarkable catalytic activity towards organic processes due to their size of 11 nm and surface area of 67.360 m g. Excellent yields of tri-substituted imidazole derivatives were produced using FeO nanoparticles as nanocatalysts in a solvent-free method.