Synthesis of ecofriendly fluorescent carbon dots and their biomedical and environmental applications

Microwave-assisted and one-step synthesis of PEG passivated fluorescent carbon dots from gelatin as an efficient nanocarrier for methotrexate delivery

“…Fluorescent carbon dots (CDs), as one of the most promising carbon nanomaterials, have gained an impressive interest due to their unique optical and electronic properties [1][2][3][4][5]. In comparison with traditional organic dyes and inorganic quantum dots (QDs), CDs are more superior due to a) biocompatibility, b) low toxicity, c) chemical solubility, d) aqueous solubility and e) easy surface modification [6][7][8].…”

Regulation Mechanisms of Carbon Dots in the Development of Lettuce and Tomato

“…Furthermore, at higher concentrations, CDs may exert toxic effects through the production of reactive oxygen species, lipid peroxidation, protein, and DNA damage. 17 CDs Enhanced Yield and Nutritional Quality of Mature Plants. The enhancement of crop yield by CDs has been revealed by an increasing number of studies.…”

“…To date, natural materials such as juice, potato, and garlic, have been used for the fabrication of CDs. 17 Accordingly, in this study, CDs, prepared by the hydrothermal method using natural L-cysteine and glucose, were applied to lettuce and tomato to comprehensively investigate its effects and biological functions in solanaceous and leafy vegetables. Tomato (Solanum lycopersicum L. Micro Tom) and lettuce ( Lactuca sativa L.) are important solanaceous and leafy vegetables, respectively, which are widely cultivated throughout the world.…”

Carbon Dots: An Excellent Fluorescent Probe for Contaminant Sensing and Remediation

“…CDs are fluorescent nanomaterials with highly adjustable photoluminescent and optoelectronic characteristics because of their strong quantum confinement effect. [ 18,19 ] The oxygenated surfaces functional moieties on the CDs have changed the surface architecture and sizes of particles, allowing the quantum confinement effects, which appears when the CDS radius is less than the exciton Bohr radius. “Electronic bandgap transitions of conjugated‐domains, surface defect states, local fluorophores, and element doping all influence fluorescence color of CDs.” [ 20 ] When photons stimulate CDs, electrons move to excited states and ultimately return to the equilibrium states/ground state.…”