Facile green and one-pot synthesis of purple perilla derived carbon quantum dot as a fluorescent sensor for silver ion

Recent advances of biomass carbon dots on syntheses, characterization, luminescence mechanism, and sensing applications

“…(3) The quenching constant decreases with the temperature increases. [ 31,180 ] The mechanism of the quenching of CQDs by Ag + from purple perilla [ 181 ] (Figure 12A and 12B) has been verified to be static quenching based on these three judgments. Many other biomass carbon dots have also been reported based on the static quenching mechanism to realize the detection of targets, such as the carbon dots derived from magnolia flower, [ 182 ] luffa sponge, [ 183 ] poplar leaves, [ 169 ] and sucrose.…”

Switch on fluorescence mode for determination of l-cysteine with carbon quantum dots and Au nanoparticles as a probe

“…Compared to semiconductors QDs (CdS, CdSe, CdTe) and noble metal nanomaterials (Au-AgNCs), CQDs have advantages of simple preparation, low cost, no toxicity, good biocompatibility, and excellent luminescence properties. According to current literatures, uorescence assays based on CQDs have been widely used in chemical sensing [11][12][13] and bioimaging. [14][15][16] Although the switch on uorescence probe composed of CQDs and AuNPs has been used for the detection of protamine, 17 melamine, 18 cholesterol 19 and organophosphate pesticides, 20 the uorescence method based on CQDs and AuNPs for the Cys analysis is rarely reported.…”

Green Synthesized Fluorescent Carbon Dots from Momordica charantia for Selective and Sensitive Detection of Pd2+ and Fe3+

“…[27] The O1s spectrum ( Figure 2d) showed three peaks at 530.6, 531.5 and 532.3 eV which proved the existence of OÀ H, C=O and CÀ OH. [28][29][30] The results confirmed the presence of oxygen-and nitrogen-containing groups on the surface of CDs.…”