Herein, we investigate the migration distance of quantum-dot-functionalized complexes in electrophoresis. The quantitative study of these moving particles in an electrophoretic environment is modeled using an extended Smoluchowski equation. An extended Smoluchowski equation is proposed to addressed the D(m) to Ln(N) plot slope variation issue present in previous work and agreement between experiment and theory is found. The procedures underlying this work then discusses the potential of using agarose electrophoresis as a mean of monitoring the composition of nano-complexes consisting of quantum dots functionalized with differing numbers of DNA molecules.
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http://dx.doi.org/10.1109/tnb.2013.2268540 | DOI Listing |
Environ Sci Pollut Res Int
January 2025
College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, 210037, China.
Since its discovery, carbon quantum dots (CDs) have been widely applied in cell imaging, drug delivery, biosensing, and photocatalysis due to their excellent water solubility, chemical stability, fluorescence stability biocompatibility, low toxicity, and preparation cost. However, the low fluorescence yield and poor surface structure limit the application of CDs. Heteroatom doping is considered an ideal method to improve CDs' optical and electrical properties.
View Article and Find Full Text PDFTalanta
January 2025
The School of Material Science and Chemical Engineering, Harbin University of Science and Technology, Harbin, 150040, PR China.
Epinephrine (Ep) is an important neurotransmitter, which plays an important role in the nervous system and glycogen metabolism of living organisms. Hence, a novel NCQDs/FeCoFe-PBA composite with FeCoFe-Prussian blue analogues (PBA) as the core and nitrogen-doped carbon quantum dots (NCQDs) as the shell was constructed by a one-pot hydrothermal method, and it was used for the efficient detection of Ep. As a good electroactive material, NCQDs in the composite not only improved the weak conductivity of FeCoFe-PBA, but also limited the self-aggregation of FeCoFe-PBA, and formed a uniform shell on FeCoFe-PBA.
View Article and Find Full Text PDFJ Hazard Mater
December 2024
College of Life Science, Henan Normal University, Xinxiang 453007, China. Electronic address:
The widespread application of quantum dots (QDs) in recent years has raised concerns about potential environmental and human health risks. Although the toxicity of cadmium telluride quantum dots (CdTe QDs) has been partially studied, their effects on stem cells, tissue regeneration, neurodevelopment, and neurobehavioral toxicity remain unclear. This study aimed to investigate the combined toxic effects and mechanisms of CdTe QDs on planarians at the individual, tissue, cellular, and molecular levels.
View Article and Find Full Text PDFJ Hazard Mater
December 2024
Department of Chemistry, National Sun Yat-sen University, No. 70 Lienhai Rd., Kaohsiung 80424, Taiwan; Center for Nanoscience & Nanotechnology, National Sun Yat-sen University, No. 70 Lienhai Rd., Kaohsiung 80424, Taiwan; School of Pharmacy, College of Pharmacy, Kaohsiung Medical University, No.100, Shiquan 1st Rd., Kaohsiung 80708, Taiwan. Electronic address:
Food freshness monitoring and volatile amine detection are key to food safety. In this study, we demonstrated the applicability of mixed-valence rhenium oxide quantum dots (MV-ReOQDs), synthesized via the hydrothermal reaction of α-cyclodextrin and rhenium ion precursors, in triethylamine (TEA) sensing. Spectroscopic correlation techniques showed that the developed MV-ReOQDs possessed mixed-valent rhenium, α-cyclodextrin as capped ligand, partially carbonized surface, and amorphous phase structure.
View Article and Find Full Text PDFJ Colloid Interface Sci
December 2024
Nanotechnology Research Center, Research Institute of Petroleum Industry (RIPI), West Blvd. Azadi Sports Complex, P.O. Box 14665, 1998 Tehran, Iran.
Herein, a novel nanocomposite was developed to adjust the textural properties of metal-organic frameworks (MOFs) for adsorptive applications. To this end, nitrogen-doped carbon quantum dots/reduced graphene oxide nanocomposite (RC) was embedded into MIL-101(Cr) crystals, named RC-ML-x nanocomposites. The prepared nanoadsorbents were thoroughly characterized by different techniques.
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