K R Athulya, Arathy Chandran, Tirupati Rao Bantu, Anitha C Kumar
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引用次数: 0
Abstract
Carbon dots (CDs) are nanomaterials that have gained worldwide attention due to their unique properties. This study investigated the stability of polyethylene glycol (PEG) CDs over a period of 60 days. To our knowledge, the stability of microwave-synthesized PEG CDs has not been extensively investigated by previous research groups. Comprehensive characterization was conducted using spectroscopic techniques, including UV-Vis, and fluorescence and additional techniques like DLS and TEM. UV-Vis, fluorescence, and DLS analysis were performed at regular intervals (days 1, 15, 30, and 60) to monitor changes in optical properties, particle size, and dispersion. Quantum yield (QY) and lifetime measurements were conducted on day 1 and day 60 to assess the luminescence efficiency. The results demonstrated exceptional stability of the PEG CDs, evident from the consistent UV-Vis, fluorescence spectra, unchanged particle size, and preserved morphology. Moreover, the QY and lifetime values showed small changes, indicating the robustness of the CDs.
期刊介绍：
Journal of Fluorescence is an international forum for the publication of peer-reviewed original articles that advance the practice of this established spectroscopic technique. Topics covered include advances in theory/and or data analysis, studies of the photophysics of aromatic molecules, solvent, and environmental effects, development of stationary or time-resolved measurements, advances in fluorescence microscopy, imaging, photobleaching/recovery measurements, and/or phosphorescence for studies of cell biology, chemical biology and the advanced uses of fluorescence in flow cytometry/analysis, immunology, high throughput screening/drug discovery, DNA sequencing/arrays, genomics and proteomics. Typical applications might include studies of macromolecular dynamics and conformation, intracellular chemistry, and gene expression. The journal also publishes papers that describe the synthesis and characterization of new fluorophores, particularly those displaying unique sensitivities and/or optical properties. In addition to original articles, the Journal also publishes reviews, rapid communications, short communications, letters to the editor, topical news articles, and technical and design notes.
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