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Cadmium selenide nanoparticles (CdSe NPs) were synthesized by an easy and simple method and their properties were assessed by XRD, TEM and SEM techniques. The effects of CdSe NPs as well as Cd ions on plants were investigated. The absorption of CdSe NPs by the plants had some adverse consequences that were assessed by a range of biological analyses. The results revealed that both CdSe NPs and the ionic form of cadmium noticeably caused toxicity in Morphological parameters as well as peroxidase (POD) activity were deteriorated. In contrast, the activities of some other antioxidant enzymes (superoxide dismutase (SOD) and catalase (CAT)) as well as the contents of total phenol and flavonoids went up. Taken all together, it could be implied that CdSe NPs as well as Cd were highly toxic to plants and stimulated the plant defense system in order to scavenge produced reactive oxygen species (ROS).
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http://dx.doi.org/10.3390/molecules24030410 | DOI Listing |
Mikrochim Acta
August 2025
Coordination and Supramolecular Chemistry Group (SupraMetal), Department of Inorganic Chemistry, Faculty of Chemistry, Universidade de Santiago de Compostela, Avda. das Ciencias S/N, Campus Vida, 15782, Santiago de Compostela, Spain.
A novel approach is reported to quantify CuO NPs in aqueous samples by using digital image colorimetry (DIC), which is a rapid, low-cost, and facile method. We have used a colour recogniser application on a smartphone to register the gradual colour changes experimented, under λ = 365 nm radiation, by a dansyl-based chemosensor immobilised on cellulose paper, after interacting with aqueous dispersions of CuO NPs with concentrations between 5 and 100 µg L. The low limits of detection (LOD) and quantification (LOQ) (10.
View Article and Find Full Text PDFNanoscale
May 2025
Department of Chemistry and Biochemistry, University of Maryland Baltimore County (UMBC), Baltimore, Maryland 21250, USA.
There is significant demand for the conversion of hydrophobic nanoparticles (NPs) into water-soluble NPs, particularly for the transfer of photoluminescent quantum dots (QDs) synthesized in organic solvents into water-based settings. However, these transfer processes are often inefficient, with only a fraction of the QDs transferred into water, and typically result in decreases in photoluminescence quantum yield (PLQY). Here, we demonstrate a straightforward technique to efficiently transfer oleic acid (OA)-coated CdSe/CdS core-shell QDs into water without the addition of any new reagents.
View Article and Find Full Text PDFAnal Chem
April 2025
School of Chemistry and Life Science, Jiangsu Key Laboratory of Environmental Functional Materials, Suzhou University of Science and Technology, Suzhou 215009, China.
Single-nanoparticle electrochemiluminescence (ECL) imaging is a promising technique for investigating surface dynamics and cellular processes. However, due to the low luminescence intensity of individual particles, most current approaches utilize luminescent materials such as ruthenium bipyridine or luminol derivatives. Quantum dot-based single-nanoparticle ECL imaging, however, remains less explored.
View Article and Find Full Text PDFSmall Methods
February 2025
Department of Materials Engineering, Indian Institute of Science, Bangalore, 560012, India.
Cu₂SnSe₃ (CTSe) shows promise due to its wide solar absorption and tunable band gap, though low efficiency caused by interface recombination and crystallinity issues remains a challenge. In this study, a systematic and facile synthesis method for CTSe nanoparticles (NPs) is demonstrated, accompanied by an in-depth analysis of their growth mechanisms. A comprehensive experimental and theoretical investigation is conducted to explore the structural, compositional, optoelectronic, and band alignment properties of p-type CTSe NPs as a solar absorber, along with n-type CdSe and ZnSe NPs as buffer layers.
View Article and Find Full Text PDFChemMedChem
April 2025
Institute of Nanochemistry and Nanobiology, Shanghai University, Shanghai, 200444, China.
As a newly emerging technology, conformational engineering (CE) has been gradually displaying the power of producing protein-like nanoparticles (NPs) by tuning flexible protein fragments into their original native conformation on NPs. But apparently, not all types of NPs can serve as scaffolds for CE. To expedite the CE technology on a broader variety of NPs, the essential characteristic of NPs as scaffolds for CE needs to be identified.
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