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78601
Optoelectrical Properties of Hexamine Doped-Methylammonium Lead Iodide Perovskite under Different Grain-Shape Crystallinity
Published 2023-04-01“…Optoelectrical dynamic analysis using transient photoluminescence and electrochemical impedance spectroscopies reveals that (i) carrier lifetime in the champion device can be up to 25 ns, which is almost double the carrier lifetime of the sample annealed at 130 °C. …”
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78602
Thermal-Robust Phenoxyimine Titanium Catalysts Bearing Bulky Sidearms for High Temperature Ethylene Homo-/Co- Polymerizations
Published 2024-03-01“…All the ligands and complexes were well characterized by <sup>1</sup>H and <sup>13</sup>C NMR spectroscopies, in which <i>ortho</i>- methoxyl groups on <i>N</i>-aryl moieties shifted to downfield, corroborating the successful coordination reaction. …”
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78603
Rational hydrothermal-assisted green synthesis of blueish emitting carbon dots as an optical sensing platform for antibiotic detection in the milk sample
Published 2023-12-01“…The structural and optical characteristics of the synthesized CDs are done using XRD, FTIR, UV–visible spectroscopies, SEM-EDX, PL, and TEM. CDs were found to have a quasi-spherical shape with an average size of 2.54 nm. …”
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78604
High-Content <i>Aloe vera</i> Based Hydrogels: Physicochemical and Pharmaceutical Properties
Published 2023-03-01“…The chemical structure was investigated using different characterization methods (XRD, FTIR and Raman spectroscopies) and the morphology of the hydrogels was studied SEM and AFM microscopy. …”
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78605
Effect of Microwave Treatment in a High Pressure Microwave Reactor on Graphene Oxide Reduction Process—TEM, XRD, Raman, IR and Surface Electron Spectroscopic Studies
Published 2021-09-01“…The substrates and received products were investigated by TEM, XRD, Raman and IR spectroscopies, XPS, XAES and REELS. MWT assisted reduction using different agents resulted in rGOs of a large number of vacancy defects, smaller than at GO surface C sp<sup>3</sup> defects, oxygen groups and interstitial water, interlayer distance and diameter of stacking nanostructures (flakes). …”
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78606
Gold Nanorods as Radiopharmaceutical Carriers: Preparation and Preliminary Radiobiological In Vitro Tests
Published 2023-06-01“…Spectroscopic characterizations, such as UV-Vis and synchrotron radiation-induced X-ray photoelectron (SR-XPS) spectroscopies, were performed to investigate the drug–AuNR interaction. …”
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78607
Synthesis and Comprehensive Study of Quaternary-Ammonium-Based Sorbents for Natural Gas Sweetening
Published 2021-11-01“…The synthesized compounds were characterized by <sup>1</sup>H NMR and FT-IR spectroscopies and elemental analysis. Afterward, the sorption properties of the compounds were evaluated using the inverse gas chromatography (IGC) method, and their thermodynamic parameters were calculated in the temperature range of 303.15–333.15 K. …”
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78608
Controlling Magnesium Silicates Coprecipitation Conditions: A Tool to Tune Their Surface Acid–Base Reactivity
Published 2023-10-01“…A set of experimental characterization data obtained by N<sub>2</sub> physisorption, SEM, XRD, TGA-DTA as well as Raman and <sup>29</sup>Si NMR spectroscopies are presented and discussed. They show the existence of two distinct families with a similar Magnesium Silicate Hydrate (MSH) phase, but they reveal different aggregation states and textural properties. …”
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78609
One-Pot Synthesis of 7, 7-Dimethyl-4-Phenyl-2-Thioxo-2,3,4,6,7, 8-Hexahydro-1H-Quinazoline-5-OnesUsing Zinc Ferrite Nanocatalyst and Its Bio Evaluation
Published 2021-03-01“…Structural validation and characterization of all the newly synthesized compounds were evaluated by spectral analysis (mass spectrometry, proton nuclear magnetic resonance (<sup>1</sup>HNMR), and Carbon-13 nuclear magnetic resonance(<sup>13</sup>CNMR)spectroscopies. The structure of antibacterial and antifungal assays was performed with the newly synthesized compounds. …”
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78610
Synthesis of MIL-Modified Fe<sub>3</sub>O<sub>4</sub> Magnetic Nanoparticles for Enhancing Uptake and Efficiency of Temozolomide in Glioblastoma Treatment
Published 2022-03-01“…The chemical characterization of the hybrid system was performed through various complementary techniques: X-ray-diffraction, thermogravimetric analysis, FT-IR and X-ray photoelectron spectroscopies. The nanomaterial showed low toxicity and an increased adsorption capacity compared to bare Fe<sub>3</sub>O<sub>4</sub> magnetic nanoparticles (MNPs). …”
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78611
Monovalent Cation Activation of the Radical SAM Enzyme Pyruvate Formate-Lyase Activating Enzyme
Published 2018“…A SAM carboxylate-oxygen is an M⁺ ligand, and EPR and circular dichroism spectroscopies reveal that both the site occupancy and the identity of the cation perturb the electronic properties of the SAM-chelated iron-sulfur cluster. …”
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78612
Rare earth evoked subsurface oxygen species in platinum alloy catalysts enable durable fuel cells
Published 2024“…We have succeeded in introducing Gd-O dipoles into Pt3 Ni via a high temperature entropy-driven process, with direct spectral evidence attained from both soft and hard X-ray absorption spectroscopies. The higher rated power of 0.93 W cm-2 and superior current density of 562.2 mA cm-2 at 0.8 V than DOE target for heavy-duty vehicles in H2 -air mode suggest the great potential of Gd-O-Pt3 Ni towards practical application in heavy-duty transportation. …”
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Journal Article -
78613
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78614
Synthesis and Evaluation of Poly(3-hydroxypropyl Ethylene-imine) and Its Blends with Chitosan Forming Novel Elastic Films for Delivery of Haloperidol
Published 2022-11-01“…<sup>1</sup>H-NMR and FTIR spectroscopies confirmed the successful conversion of L-PEI to P3HPEI, and the physicochemical properties and cytotoxicity of P3HPEI were investigated. …”
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78615
Peptide–Peptide Co-Assembly: A Design Strategy for Functional Detection of C-peptide, A Biomarker of Diabetic Neuropathy
Published 2020-12-01“…Attenuated total reflectance Fourier transform infrared (ATR-FTIR) and circular dichroism (CD) spectroscopies were utilized to study inter-peptide interactions and changes in secondary structures respectively. …”
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78616
Controlled Synthesis of CuS and Cu<sub>9</sub>S<sub>5</sub> and Their Application in the Photocatalytic Mineralization of Tetracycline
Published 2021-07-01“…The optical properties of these nanocrystals were characterized by UV−vis–NIR and photoluminescence spectroscopies. Both samples had very similar absorption spectra but distinguishable fluorescence properties and exhibited a blue shift in their band gap energies compared to bulk Cu<sub>2−<i>x</i></sub>S. …”
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78617
Synthesis, Structural, and Quantum Chemical Analysis of Neutral and Cationic Ruthenium(II) Complexes with Nicotinate-Polyethylene Glycol Ester Ligands
Published 2023-11-01“…In this contribution, two novel ligands, (2-(2-methoxyethoxy)ethyl nicotinate hydrochloride) and (2-[2-(2-methoxyethoxy)ethoxy]ethyl nicotinate hydrochloride) (pyCOO(CH<sub>2</sub>CH<sub>2</sub>O)<i><sub>n</sub></i>CH<sub>3</sub>: <b>L2</b>, <i>n</i> = 2; <b>L3</b>, <i>n</i> = 3), were synthesized and characterized via ESI-HRMS, as well as IR and NMR spectroscopies. Their structures were optimized at the B3LYP/6-311++G(d,p) level of theory, and NMR chemical shifts were predicted, along with the most important intramolecular interactions. …”
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78618
Chemical Characterization and Thermal Analysis of Recovered Liquid Crystals
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78619
Painting on the margins: investigating the pigments, media, and techniques of Séraphine Louis
Published 2024-03-01“…Analysis of the palette relied on XRF techniques and limited sampling for analysis by Raman and µ-FTIR spectroscopies. Overall, the following pigments were identified: lead white, zinc white, carbon-based black, red and brown ochres, umber, vermilion, alizarin lake, rhodamine B lake, Prussian blue, cobalt blue, ultramarine blue, chrome green, emerald green, viridian, cadmium yellow, and lead chromates, including chrome yellow deep and light, zinc yellow, and chrome orange. …”
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78620