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Dynamics of fluorinated imide-based ionic liquids using nuclear magnetic resonance techniques.
Phys Chem Chem Phys
January 2025
Department of Physics, The Graduate Center of CUNY, New York, NY, USA.
There is increasing interest in studying molecular motions in ionic liquids to gain better insights into their transport properties and to expand their applications. In this study, we have employed the fast field cycling relaxometry and pulsed field gradient nuclear magnetic resonance techniques to investigate the rotational and translational dynamics of fluorinated imide-based ionic liquids (ILs) at different temperatures. We have studied a total of six ILs composed of the 1-butyl-3-methylimidazolium cation ([BMIM]) combined with chemically modified analogs of the bis((trifluoromethyl)sulfonyl)imide anion ([NTf] or [TFSI]).
View Article and Find Full Text PDFGiant Purcell Broadening and Lamb Shift for DNA-Assembled Near-Infrared Quantum Emitters.
ACS Nano
January 2025
Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland.
Controlling the light emitted by individual molecules is instrumental to a number of advanced nanotechnologies ranging from super-resolution bioimaging and molecular sensing to quantum nanophotonics. Molecular emission can be tailored by modifying the local photonic environment, for example, by precisely placing a single molecule inside a plasmonic nanocavity with the help of DNA origami. Here, using this scalable approach, we show that commercial fluorophores may experience giant Purcell factors and Lamb shifts, reaching values on par with those recently reported in scanning tip experiments.
View Article and Find Full Text PDFImpact of Magneto-Mechanical Actuation on Cell Differentiation: A Study Using Wireless, 3D-Printed Device and a Porous Ferrogel.
Small
January 2025
Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, 247667, India.
Cells perceive external and internally generated forces of different kinds, significantly impacting their cellular biology. In the relatively nascent field of mechanobiology, the impact of such forces is studied and further utilized to broaden the knowledge of cellular developmental pathways, disease progression, tissue engineering, and developing novel regenerative strategies. However, extensive considerations of mechanotransduction pathways for biomedical applications are still broadly limited due to a lack of affordable technologies in terms of devices and simple magnetic actuatable materials.
View Article and Find Full Text PDFShort Aromatic Blocks Enhance Styrene Conversion in Polymer Cubosome Formation via Polymerization-Induced Self-Assembly.
Macromol Rapid Commun
January 2025
School of Materials Science and Engineering, Beihang University, Beijing, 100191, P. R. China.
Polymer cubosomes (PCs) have garnered significant interest in the field of nanomaterials and nanotechnology due to their unique properties and potential applications. However, the fabrication of PCs remains challenging. Polymerization-induced self-assembly (PISA) is recognized as an efficient method for producing a variety of polymer particles, including PCs.
View Article and Find Full Text PDFAggregation-induced emission and absorption enhancement of mixed-valent rhenium oxide quantum dots by triethylamine: Implications for food safety monitoring.
J 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.
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