Spectroanalytical Methods Using Graphene Quantum Dots as Photoluminescent Probes for the Determination of Analytes of Biological and Pharmacological Interest

Development of Analytical Methods Based on the Photoluminescence of an Eu(iii) Beta-Diketonate Complex, New Silver-Modified Nitrogen-Doped Graphene Quantum Dots and a Benzothiadiazole Derivative

“…The preparation was carried out according to the procedure previously described [183] that is currently used at LEEA-PUC-Rio with minor modifications and variation of precursors used as doping agents. In summary, a mix of 0.5 g (2.4 mmol) of citric acid and 0.15 g (2.5 mmol) of urea was transferred to a beaker and heated to 270 °C with the help of a heating plate.…”