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78321
Developing a CNT-SPE Sensing Platform Based on Green Synthesized AuNPs, Using <i>Sargassum</i> sp.
Published 2020-10-01“…In this study, gold nanoparticles (AuNPs) prepared by green synthesis from <i>Sargassum</i> sp. were characterized using ultraviolet-visible (UV-Vis) and Fourier transform-infrared (FT-IR) spectroscopies, X-ray diffraction (XRD), scanning electron microscopy (SEM), dynamic light scattering (DLS) and zeta potential (ζ) obtaining organic capped face-centered cubic 80–100 nm AuNPs with an excellent stability in a wide range of pH. …”
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78322
Pigments and Techniques of Hellenistic Apulian Tomb Painting
Published 2023-01-01“…In particular, the question was asked whether technical knowledge played a role in the reception of Hellenistic artistic models and whether this knowledge was present locally. Raman and IR spectroscopies were used to identify pigments, colourants, and binders; light and electron microscopy were used to determine the structural characteristics of the paint layers and recognise the manufacturing technique. …”
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78323
Antibacterial and Antihemolytic Activity of New Biomaterial Based on Glycyrrhizic Acid and Quercetin (GAQ) against <i>Staphylococcus aureus</i>
Published 2023-07-01“…The formation of the GAQ complex (2:1) was confirmed by using UV and FT-IR spectroscopies. It was found that the GAQ exhibited antimicrobial and antihemolytical activities against <i>S. aureus</i> bacteria and its main virulent factor—α-hemolysin. …”
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78324
Synthesis, Spectroscopic Characterization, Antibacterial Activity, and Computational Studies of Novel Pyridazinone Derivatives
Published 2023-01-01“…In this work, a novel series of pyridazinone derivatives (<b>3</b>–<b>17</b>) were synthesized and characterized by NMR (<sup>1</sup>H and <sup>13</sup>C), FT-IR spectroscopies, and ESI-MS methods. All synthesized compounds were screened for their antibacterial activities against <i>Staphylococcus aureus</i> (Methicillin-resistant), <i>Escherichia coli</i>, <i>Salmonella typhimurium</i>, <i>Pseudomonas aeruginosa</i>, and <i>Acinetobacter baumannii</i>. …”
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78325
Synthesis of Polyether, Poly(Ether Carbonate) and Poly(Ether Ester) Polyols Using Double Metal Cyanide Catalysts Bearing Organophosphorus Complexing Agents
Published 2024-03-01“…The chemical structure and composition of DMC catalysts were investigated by commonly used analysis such as infrared and X-ray photoelectron spectroscopies, and elemental analysis combining with in situ NMR analysis to determine the complexation types of organophosphorus compounds the catalyst framework. …”
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78326
Rational design of SiBCN microstructures using direct photolithography of patternable preceramic photoresists
Published 2022-11-01“…This approach first involves a two-step chemical synthesis of patternable preceramic polymers through acrylate or methacrylate grafting onto polyborovinylsilazane followed by subsequent crosslinking under UV light. FTIR and NMR spectroscopies confirmed the successful grafting of boron and photocurable units on the preceramic polymers while thermogravimetric analysis was used to monitor the polymer-to-ceramic conversion. …”
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78327
Water Saturated with Pressurized CO<sub>2</sub> as a Tool to Create Various 3D Morphologies of Composites Based on Chitosan and Copper Nanoparticles
Published 2022-10-01“…This work includes a comprehensive analysis of the regularities of copper nanoparticles stabilization and reduction with chitosan, studied by IR and UV-vis spectroscopies, XPS, TEM and rheology. Chitosan can partially reduce Cu<sup>2+</sup> ions in aqueous solutions to small-sized, spherical copper nanoparticles with a low degree of polydispersity; the process is accompanied by the formation of an elastic polymer hydrogel. …”
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78328
Use of the Asymmetrical Chelating N-Donor 2-Imino-Pyridine as a Redox [Fe4S4] Cubane Surrogate at a Di-Iron Site Related to [FeFe]-Hydrogenases
Published 2023-11-01“…Both complexes were synthesized by photolysis in moderate yields, and they were characterized by IR, <sup>1</sup>H and <sup>13</sup>C{<sup>1</sup>H} NMR spectroscopies, elemental analyses and X-ray diffraction. …”
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78329
New Insight on Photoisomerization Kinetics of Photo-Switchable Thin Films Based on Azobenzene/Graphene Hybrid Additives in Polyethylene Oxide
Published 2020-12-01“…The kinetics of photoisomerization and time-evolution of hybrid thin films were investigated using UV-Vis s and FTIR spectroscopies, as well as appropriate models developed with new analytical methods. …”
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78330
Ultrafast magnetization enhancement via the dynamic spin-filter effect of type-II Weyl nodes in a kagome ferromagnet
Published 2024-03-01“…Here, we investigate the ultrafast spin dynamics of Co3Sn2S2 crystal using time-resolved magneto-optical Kerr effect and reflectivity spectroscopies. We observe a transient magnetization behavior, consisting of spin-flipping dominated fast demagnetization, slow demagnetization due to overall half-metallic electronic structures, and an unexpected ultrafast magnetization enhancement lasting hundreds of picoseconds upon femtosecond laser excitation. …”
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78331
Do Lipids Influence Gastrointestinal Processing: A Case Study of Major Soybean Allergen Gly m 4
Published 2021-09-01“…Using fluorescent and CD spectroscopies, we showed that Gly m 4 interacted with oleic acid and LPPG (lyso-palmitoyl phosphatidylglycerol), but its binding affinity greatly decreased under acidic conditions, probably due to the protein denaturation. …”
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78332
Ionic Liquid-assisted Isolation of Lignin From Lignocellulose and Its Esterification with Fatty Acids
Published 2022-11-01“…The effects of esterification on the characteristics of ILL were evaluated, and successful esterification was confirmed using Fourier transform infrared and nuclear magnetic resonance spectroscopies.…”
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78333
New Insight into Sorption Cycling Stability of Three Al-Based MOF Materials in Water Vapour
Published 2022-06-01“…The materials were characterized by powder X-ray diffraction, N<sub>2</sub> physisorption, and Nuclear Magnetic Resonance and Infrared spectroscopies before and after the cycling tests. The results showed that the structure of MIL-110(Al) lost its crystallinity and porosity under the tested conditions, while MIL-96(Al) and MIL-100(Al) exhibited excellent hydrothermal stability. …”
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78334
Physicochemical and Optical Characterization of <i>Citrus aurantium</i> Derived Biochar for Solar Absorber Applications
Published 2021-08-01“…Biochars were characterized by SEM, elemental analysis, TGA-DSC, FTIR, DRX, Raman, and XPS spectroscopies. Optical properties such as diffuse reflectance in the UV−VIS−NIR region was also determined. …”
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78335
Synthesis of Dimethyl Carbonate by Transesterification of Propylene Carbonate with Methanol on CeO<sub>2</sub>-La<sub>2</sub>O<sub>3</sub> Oxides Prepared by the Soft Template Meth...
Published 2021-08-01“…In this study, CeO<sub>2</sub>, La<sub>2</sub>O<sub>3</sub>, and CeO<sub>2</sub>-La<sub>2</sub>O<sub>3</sub> mixed oxide catalysts with different Ce/La molar ratios were prepared by the soft template method and characterized by different techniques, including inductively coupled plasma atomic emission spectrometry, X-ray diffraction, N<sub>2</sub> physisorption, thermogravimetric analysis, and Raman and Fourier transform infrared spectroscopies. NH<sub>3</sub> and CO<sub>2</sub> adsorption microcalorimetry was also used for assessing the acid and base surface properties, respectively. …”
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78336
High-Throughput Fabrication of Resonant Metamaterials with Ultrasmall Coaxial Apertures via Atomic Layer Lithography
Published 2016“…The resulting energy accumulation alongside extraordinary optical transmission can benefit applications in nonlinear optics, optical trapping, and surface-enhanced spectroscopies. Furthermore, because the resonance wavelength is independent of the cavity length and dramatically red shifts as the gap size is reduced, large-area arrays can be constructed with λresonance ≫ period, making this fabrication method ideal for manufacturing resonant metamaterials.…”
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78337
Control over topological insulator photocurrents with light polarization
Published 2012“…The static electronic properties of these surface states have been comprehensively imaged by both photoemission (4-8) and tunneling (9,10) spectroscopies. Theorists have proposed that topological surface states can also exhibit novel electronic responses to light, such as topological quantum phase transitions (11-13) and spin-polarized electrical currents (14,15). …”
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78338
Bio-based aromatic copolyesters : influence of chemical microstructures on thermal and crystalline properties
Published 2021“…Chemical structures were confirmed by 1H NMR and 13C NMR spectroscopies. Chemical microstructure analysis suggested that the nipagin and eugenol-derived units were inserted into polymer chains in an arbitrary manner. …”
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Journal Article -
78339
Sustained release and cytotoxicity evaluation of carbon nanotube-mediated drug delivery system for betulinic acid
Published 2014“…The binding of BA onto the surface of f-SWCNTs was confirmed by FTIR and Raman spectroscopies. Powder XRD analysis showed that the structure of the conjugate was unaffected by the loading of BA. …”
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78340
Preparation of highly active zinc oxide for photocatalytic removal of phenol: direct calcination versus co-precipitation method
Published 2015“…Optical and fluorescence properties of the prepared ZnO samples were similar to each other as confirmed by DR UV-Vis and fluorescence spectroscopies, respectively. The Stern-Volmer plot was investigated to study the interactions between the emission sites and the phenol. …”
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