This review article highlights the quenching mechanism and applications of green CNDs for the detection of metal ions.

Systematic illustration of CDs derived from green sources for potential photocatalytic dye degradation by altering the fundamental properties.

Constructing low-cost fluorescent-labelled materials is needed to meet the current demand in forensic security perceptions, such as identifying latent fingerprints (LFs). Colossal works of literature are spotted in LFs with...

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Fluorescent carbon dots (C-dots) were fabricated from Anogeissus latifolia (Gum ghatti) gum extract using direct microwave pyrolysis method. The C-dots are fine-tuned concerning three parameters, viz., NaOH addition (presence and absence), microwave power, and irradiation time. C-dots optical properties were investigated through UV-visible (UV-Vis) and fluorescence spectroscopy. Using field emission scanning electron microscope (FESEM), high-resolution transmission electron microscopy (HRTEM), Fourier transform infrared (FT-IR), X-ray diffraction (XRD), and Raman Spectroscopy, physiochemical properties of synthesized C-dots were inspected. The average size of C-dots was estimated to be 4.8 ± 2 nm and is amorphous. These C-dots displayed high solubility in an aqueous medium due to oxygen functionality, and showed good fluorescence stability to high-ionic concentration and varied pH. The fluorescence spectra outcomes specified that C-dots exhibited excitation-dependent emission behavior. Furthermore, the C-dots biological function was tested for cell biocompatibility and bioimaging. The cytotoxicity studies were performed on Vero cell lines and compared with THP-1 human monocyte cell lines at different concentrations. The results revealed good biocompatibility app. 80 and 90% for Vero and THP-1 cell lines even after 24 h incubation with the C-dots. Finally, by employing C-dots as the fluorescent tool, THP-1 cells were imaged successfully via a Confocal Laser Scanning Microscope (CLSM) in a concentration-dependent manner.