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78441
Antioxidant, antimicrobial and antityrosinase activities of phytochemicals from the leaves of Globimetula braunii (Engler) Van Tiegh (Loranthaceae)
Published 2022“…Structural elucidations of the isolated compounds were carried out spectroscopically, including the use of 1D/2D nuclear magnetic resonance (NMR), Fourier transform infrared (FTIR) spectroscopies and mass spectrometry. Results indicated that quercetin (15) isolated from ethyl acetate fraction exhibited the highest 2,2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2'-azino-bis(3-ethylbenzthiazoline-6-sulphonic acid) (ABTS) scavenging capacity and also showed the highest ferric reducing antioxidant potential (FRAP) equivalent value. …”
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78442
XPS and UV\x96vis studies of Ga-doped zinc oxide nanoparticles synthesized by gelatin based sol-gel approach
Published 2016“…The effect of doping on the optical band-gap and crystalline quality was also investigated, using ultraviolet-visible (UV–vis), X-ray photoluminescence (XPS), and spectroscopies of the pure and doped ZnO NPs. It was observed that the band-gap and O-vacancies of the doped ZnO NPs were red-shifted in comparison with those of the undoped ZnO NPs in UV–vis and XPS results.…”
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78443
Nucleophilic Aromatic Substitution of Pentafluorophenyl-Substituted Quinoline with a Functional Perylene: A Route to the Modification of Semiconducting Polymers
Published 2023-06-01“…The para-fluoro aromatic nucleophilic substitution reaction was confirmed and estimated via <sup>1</sup>H and <sup>19</sup>F NMR spectroscopies. The two different polymer architectures, namely, fully or partially modified with PDI units, were studied in terms of their optical and electrochemical properties, while their morphology was evaluated using TEM analysis, revealing polymers of tailor-made optoelectronic and morphological properties. …”
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78444
Fabrication of Polyaniline/Graphene Oxide Nanosheet@ Tea Waste Granules Adsorbent for Groundwater Purification
Published 2022-10-01“…The synthesized materials were characterized by SEM, XRD, XPS, and FTIR spectroscopies. The optimization of experimental conditions was tested for bromide (Br<sup>−</sup>) removal from synthetic water. …”
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78445
THE EFFECT OF CALCINATION TEMPERATURES ON THE PROPERTIES OF ZNO NANOPARTICLES SYNTHESIZED BY USING LEAVES EXTRACTS OF PINUS BRUTIA TREE
Published 2023-06-01“…The chosen plant PB had its findings at both examinations of FTIR and UV-Visible spectroscopies shown and offered to be a superior option for the GS ZnO NPs at various pH levels. …”
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78446
Synergistic Antibacterial Efficacy of Biogenic Silver Nanoparticles Prepared Using Methanolic Stem Extract of Tinospora Cordifolia and Hydrogen Peroxide
Published 2024-01-01“…Utilizing MSE under sunlight, biogenic silver nanoparticles were produced, with their properties characterised using FTIR and UV-Visible spectroscopies. Turbidimetry determined the Minimum Inhibitory Concentration (MIC) of SNP-MSE, H2O2, and their varied combinations at different concentrations. …”
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78447
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78448
Effect of dye complex structure on performance in DSSCs; An experimental and theoretical study
Published 2022-11-01“…The bandgap, and energy levels of these dyes (1–4) were estimated by Ultraviolet-Visible (UV-Vis), spectroscopies, and cyclic voltammetry (CV).Delocalized π-electron of phenanthroline in two compounds (2, 4) by effectively reducing band gap energies leads to power conversion efficiency (PCE) of 0.511%, and 1.006%, respectively. …”
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78449
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78450
Are current atomistic force fields accurate enough to study proteins in crowded environments?
Published 2014-05-01“…Moreover, various structural biology methods, such as NMR or different spectroscopies, typically involve samples with relatively high protein concentration. …”
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78451
Cancer-Targeted Controlled Delivery of Chemotherapeutic Anthracycline Derivatives Using Apoferritin Nanocage Carriers
Published 2021-01-01“…The encapsulation/release processes were investigated using UV-Vis, fluorescence, circular dichroism, and FTIR spectroscopies. The in vitro cytotoxicity/growth inhibition tests and flow cytometry corroborate high apoptotic activity of APO(drugs) against targeted MDA-MB-231 adenocarcinoma and HeLa cells, and low activity against healthy MCF10A cells, demonstrating targeting ability of nanodrugs. …”
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78452
Green Synthesis of New Heterocyclic Surfactant Compounds by Multicomponent Reactions and Their Antibacterial and Corrosion Inhibitor, Study on Carbon Steel Alloy in Acid Media 2 M...
Published 2023-12-01“…Heterocyclic 1,4-di(1,3,5-dithiazinan-5-yl)benzene (D) and two heterocyclic-cationic Gemini surfactant 5,5'-(1,4-phenylene)bis(5-decyl-1,3,5-dithiazinan-5-ium)bromide (E) and 5,5'-(1,4-phenylene)bis(5-tetradecyl-1,3,5-dithiazinan-5-ium)bromide (F) were prepared and identified by FTIR, 1H-NMR spectroscopies, and GC–MS. Then, they were tested as corrosion inhibitors against carbon steel corrosion in 2.0 M aggressive HCl medium at 25 and 50 °C. …”
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78453
A water cooled, high power, dielectric barrier discharge reactor for CO2 plasma dissociation and valorization studies
Published 2023-05-01“…It was found that the combination of a high-power, water-cooled plasma reactor, together with electronic and waveform diagnostic, optical emission and mass spectroscopies provides a convenient experimental framework for studies on the chemical storage of fast electric power transients and surges.…”
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78454
Nanoparticulate Perovskites for Photocatalytic Water Reduction
Published 2023-07-01“…The NPs were characterized using Fourier transform infrared (FTIR) and solid-state absorption spectroscopies, thermogravimetric analysis mass spectrometry (TGA-MS), and matrix-assisted laser desorption/ionization mass spectrometry (MALDI-MS), and the dihydrogen generation was analyzed using gas chromatography–mass spectrometry (GC-MS). …”
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78455
Photocatalytic degradation of brilliant green and 4-nitrophenol using Ni-doped Gd(OH)3 nanorods
Published 2024-04-01“…The vibrational modes of Gd(OH)3 and Ni-Gd(OH)3 were confirmed using Raman and Fourier-transform infrared spectroscopies. The band gap energy was greatly influenced by Ni-doping, in which a reduction of the band gap energy from 5.00 to 3.03 eV was observed. …”
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78456
An Improved One-Pot Procedure for Preparation Of N,N -Diethyl-m-Toluamide from m-Toluic Acid
Published 2022-11-01“…The structure of DEET was determined by model spectroscopies MS, and NMR. Conclusions: An improved procedure for the synthesis of N,N-diethyl-m -toluamide (DEET) or N,N-diethyl-m-methylbenzamide is established where the use of all reagents was optimized in suitable amount to apply in industrial production.…”
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78457
CeZrOx Promoted Water-Gas Shift Reaction under Steam–Methane Reforming Conditions on Ni-HTASO5
Published 2020-09-01“…Ni-based catalysts (Ni-γ-Al<sub>2</sub>O<sub>3</sub>, Ni-HTASO5 and Ni-CeZrO<sub>x</sub>) were prepared by impregnation method and characterized by BET, AAS, XRD, H<sub>2</sub>-TPR, CO-TPD, NH<sub>3</sub>-TPD, XPS, TG-DSC-MS and Raman spectroscopies. Using CeZrO<sub>x</sub>-modified Al<sub>2</sub>O<sub>3</sub> (HTASO5) as support, the catalyst exhibited good catalytic performance (TOF<sub>CH4</sub> = 8.0 × 10<sup>−2</sup> s<sup>−1</sup>, TOF<sub>H2</sub> = 10.5 × 10<sup>−2</sup> s<sup>−1</sup>) and carbon resistance for steam-methane reforming (SMR) reaction. …”
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78458
Two-Dimensional Electronic Transport in Rubrene: The Impact of Inter-Chain Coupling
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78459
Amino Surface Modification and Fluorescent Labelling of Porous Hollow Organosilica Particles: Optimization and Characterization
Published 2022-04-01“…The prepared pHOPs were thoroughly characterized by transmission electron microscopy, dynamic light scattering, FT-IR, UV-Vis and fluorescence spectroscopies, and microfluidic resistive pulse sensing. …”
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78460
Exploring Structure Function Relationship using Bio-Inspired DNA-Chromophore Complexes
Published 2022“…In this work, we use a combination of ensemble and single-molecule fluorescence spectroscopies and theoretical modelling to explore ways which the photophysics of the cyanine chromophore, Cy3, may be controlled through the tuning of its DNA scaffold. …”
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