Blue-fluorescent and biocompatible carbon dots derived from abundant low-quality coals
Autor: | Danaboyina Ramaiah, Manobjyoti Bordoloi, Sonali Roy, Bardwi Narzary, Jayanta Bora, Jiumoni Lahkar, Binoy K. Saikia, Dipankar Neog, Tonkeswar Das, Hari P. Dekaboruah |
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Rok vydání: | 2019 |
Předmět: |
Materials science
Silver Cell Survival Ultraviolet Rays 030303 biophysics Biophysics Quantum yield chemistry.chemical_element Metal Nanoparticles Biocompatible Materials 02 engineering and technology Gram-Positive Bacteria Silver nanoparticle 03 medical and health sciences Anti-Infective Agents Cell Line Tumor Gram-Negative Bacteria Quantum Dots Fluorescent materials Humans Radiology Nuclear Medicine and imaging 0303 health sciences Radiation Radiological and Ultrasound Technology Silver ion 021001 nanoscience & nanotechnology Biocompatible material Fluorescence Carbon Coal Spectrometry Fluorescence Chemical engineering chemistry Reagent 0210 nano-technology |
Zdroj: | Journal of photochemistry and photobiology. B, Biology. 195 |
ISSN: | 1873-2682 |
Popis: | Coal is one of the most abundant natural carbonaceous materials. This paper reports a novel oxidative chemical method for the synthesis of high-value carbon dots (CDs) from cheap and abundant low-quality high‑sulfur coals for use in high-end applications. These CDs were synthesized by using wet-chemical ultrasonic stimulation-induced process which is environmentally facile and less drastic compared to other chemical methods of production of CDs. The sizes of the synthesized CDs from different types of coal samples were estimated to be in the range of 1–4 nm, 1–6 nm, 2–5 nm, and 10–30 nm. The quantum yield (QY) of the CDs was determined and it was found to be around 3–14%. For high-end field application, the CDs were further tested for toxicity and were reported to be safe for environmental and biological applications. The cell image analysis under the fluorescence microscope further indicated that the synthesized CDs could be used as a promising bio-compatible material for optical-imaging as well as bio-imaging. The CDs showed promising fluorescent sensing property and can be utilized as a good probe for silver ion detection/sensing. The CDs is also found to be a promising reagent for silver nanoparticles synthesis. The results provide a new avenue for large-scale synthesis of CDs. |
Databáze: | OpenAIRE |
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