Showing 78,601 - 78,620 results of 78,785 for search '"Spectroscopy"', query time: 0.40s Refine Results
  1. 78601

    Optoelectrical Properties of Hexamine Doped-Methylammonium Lead Iodide Perovskite under Different Grain-Shape Crystallinity by Marjoni Imamora Ali Umar, Annisa Zahra Ahdaliza, Salah M. El-Bahy, Nur Aliza, Siti Naqiyah Sadikin, Jaenudin Ridwan, Abang Annuar Ehsan, Mohammed A. Amin, Zeinhom M. El-Bahy, Akrajas Ali Umar

    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. …”
    Get full text
    Article
  2. 78602

    Thermal-Robust Phenoxyimine Titanium Catalysts Bearing Bulky Sidearms for High Temperature Ethylene Homo-/Co- Polymerizations by Xin Wang, Lishuang Ma, Xiaohua Wang, Wenpeng Zhao, Heng Liu, Xuequan Zhang, Feng Wang

    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. …”
    Get full text
    Article
  3. 78603

    Rational hydrothermal-assisted green synthesis of blueish emitting carbon dots as an optical sensing platform for antibiotic detection in the milk sample by Navneet Chaudhary, Damini Verma, Amit K. Yadav, Jai Gopal Sharma, Pratima R. Solanki

    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. …”
    Get full text
    Article
  4. 78604

    High-Content <i>Aloe vera</i> Based Hydrogels: Physicochemical and Pharmaceutical Properties by Mariana Chelu, Monica Popa, Emma Adriana Ozon, Jeanina Pandele Cusu, Mihai Anastasescu, Vasile Adrian Surdu, Jose Calderon Moreno, Adina Magdalena Musuc

    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. …”
    Get full text
    Article
  5. 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 by Beata Lesiak, Grzegorz Trykowski, József Tóth, Stanisław Biniak, László Kövér, Neha Rangam, Artur Małolepszy, Leszek Stobiński

    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). …”
    Get full text
    Article
  6. 78606

    Gold Nanorods as Radiopharmaceutical Carriers: Preparation and Preliminary Radiobiological In Vitro Tests by Ludovica Binelli, Valentina Dini, Simone Amatori, Teresa Scotognella, Alessandro Giordano, Barbara De Berardis, Federica Bertelà, Chiara Battocchio, Giovanna Iucci, Ilaria Fratoddi, Antonella Cartoni, Iole Venditti

    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. …”
    Get full text
    Article
  7. 78607

    Synthesis and Comprehensive Study of Quaternary-Ammonium-Based Sorbents for Natural Gas Sweetening by Maria E. Atlaskina, Artem A. Atlaskin, Olga V. Kazarina, Anton N. Petukhov, Dmitriy M. Zarubin, Alexander V. Nyuchev, Andrey V. Vorotyntsev, Ilya V. Vorotyntsev

    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. …”
    Get full text
    Article
  8. 78608

    Controlling Magnesium Silicates Coprecipitation Conditions: A Tool to Tune Their Surface Acid–Base Reactivity by François Payan, Albert Issa, Jean-Marc Krafft, Yannick Millot, Thomas Onfroy, Capucine Sassoye, Jean-François Hochepied, Guillaume Laugel, Hélène Lauron-Pernot

    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. …”
    Get full text
    Article
  9. 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 by Tentu Nageswara Rao, Nalla Krishnarao, Faheem Ahmed, Suliman Yousef Alomar, Fadwa Albalawi, Panagal Mani, Abdullah Aljaafari, Botsa Parvatamma, Nishat Arshi, Shalendra Kumar

    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. …”
    Get full text
    Article
  10. 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 by Luca Pulvirenti, Francesca Monforte, Francesca Lo Presti, Giovanni Li Volti, Giuseppe Carota, Fulvia Sinatra, Corrado Bongiorno, Giovanni Mannino, Maria Teresa Cambria, Guglielmo Guido Condorelli

    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). …”
    Get full text
    Article
  11. 78611

    Monovalent Cation Activation of the Radical SAM Enzyme Pyruvate Formate-Lyase Activating Enzyme by Shisler, Krista A., Hutcheson, Rachel U., Horitani, Masaki, Duschene, Kaitlin S., Crain, Adam V., Byer, Amanda S., Shepard, Eric M., Rasmussen, Ashley, Yang, Jian, Broderick, William E., Hoffman, Brian M., Broderick, Joan B., Vey, Jessica Lynn, Drennan, Catherine L.

    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. …”
    Get full text
    Article
  12. 78612

    Rare earth evoked subsurface oxygen species in platinum alloy catalysts enable durable fuel cells by Yang, Liting, Bai, Jingsen, Zhang, Nanshu, Jiang, Zheng, Wang, Ying, Xiao, Meiling, Liu, Changpeng, Zhu, Siyuan, Xu, Jason Zhichuan, Ge, Junjie, Xing, Wei

    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. …”
    Get full text
    Journal Article
  13. 78613
  14. 78614

    Synthesis and Evaluation of Poly(3-hydroxypropyl Ethylene-imine) and Its Blends with Chitosan Forming Novel Elastic Films for Delivery of Haloperidol by Sitthiphong Soradech, Pattarawadee Kengkwasingh, Adrian C. Williams, Vitaliy V. Khutoryanskiy

    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. …”
    Get full text
    Article
  15. 78615

    Peptide–Peptide Co-Assembly: A Design Strategy for Functional Detection of C-peptide, A Biomarker of Diabetic Neuropathy by Kiat Hwa Chan, Jaehong Lim, Joo Eun Jee, Jia Hui Aw, Su Seong Lee

    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. …”
    Get full text
    Article
  16. 78616

    Controlled Synthesis of CuS and Cu<sub>9</sub>S<sub>5</sub> and Their Application in the Photocatalytic Mineralization of Tetracycline by Murendeni P. Ravele, Opeyemi A. Oyewo, Damian C. Onwudiwe

    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. …”
    Get full text
    Article
  17. 78617

    Synthesis, Structural, and Quantum Chemical Analysis of Neutral and Cationic Ruthenium(II) Complexes with Nicotinate-Polyethylene Glycol Ester Ligands by Dušan Dimić, Thomas Eichhorn, Dejan Milenković, Goran N. Kaluđerović

    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. …”
    Get full text
    Article
  18. 78618
  19. 78619

    Painting on the margins: investigating the pigments, media, and techniques of Séraphine Louis by Abed Haddad, Ken Sutherland, Silvia A. Centeno, Gwénaëlle M. Kavich, Maria Kokkori, Caroline Hoover, Diana Hartman-Drumm, Nathalie Balcar, Gilles Barabant

    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. …”
    Get full text
    Article
  20. 78620