Showing 78,361 - 78,380 results of 78,785 for search '"Spectroscopy"', query time: 0.40s Refine Results
  1. 78361

    Electronic delocalization in the radical cations of porphyrin oligomer molecular wires by Peeks, MD, Tait, CE, Neuhaus, P, Fischer, GM, Hoffmann, M, Haver, R, Cnossen, A, Harmer, JR, Timmel, CR, Anderson, HL

    Published 2017
    “…The radical cations were generated in solution by chemical and electrochemical oxidation, and probed by vis-NIR-IR and EPR spectroscopies. The cations exhibit strong NIR bands at ~1000 nm and 2000-5000 nm which shift to longer wavelength with increasing oligomer length. …”
    Journal article
  2. 78362

    An investigation of stimulated emission processes in thin-film molecular materials and structures by Xia, Y

    Published 2020
    “…Absorption and emission spectroscopies are used to obtain material properties in photo-physics, and excited state lifetime is extracted from transient photoluminescence measurement. …”
    Thesis
  3. 78363

    On-site interband excitations in resonant inelastic x-ray scattering from Cu2O by Hu, J, Payne, D, Egdell, R, Glans, P, Learmonth, T, Smith, K, Guo, J, Harrison, N

    Published 2008
    “…The electronic structure of cuprite (Cu2 O) has been studied by high-resolution x-ray photoemission (XPS), x-ray absorption (XAS), and resonant x-ray emission spectroscopies (XES) supported by band structure calculations using a hybrid exchange approximation to density functional theory. …”
    Journal article
  4. 78364

    Synthesis, Characterization, In Silico And In Vitro Evaluations Of Benzimidazolium Derived N-heterocyclic Carbenes And Their Silver (I)-nhc Complexes by Zin, Nor Farah Hani Md

    Published 2023
    “…Two new series of asymmetrical benzimidazolium-based N-heterocyclic carbene (NHC) ligands and their Ag(I)-NHC complexes were synthesised and characterised using Fourier-transform infrared (FTIR) and Fourier-transform nuclear magnetic resonance (FT-NMR) spectroscopies and CHN elemental analysis. The ligands, 1-13 were synthesized via alkylation of 1-methyl/octadecylbenzimidazole with alkyl bromides (C = 4-18 in even parity), These ligands were reacted with silver oxide (Ag2O) via in situ deprotonation reaction, followed by metathesis reaction with potassium hexafluorophosphate (KPF6) to yield Ag(I)-NHC complexes, 14-25. …”
    Get full text
    Thesis
  5. 78365

    Synthesis, characterization and evaluation of Pamam Dendrimer-Gold complex as an anion recognition material by Abd. Malek, Muhammad Nor Fazli

    Published 2009
    “…The PAMAM dendrimer-gold complex gave light purple solution and was characterized by *H nucleus magnetic resonance (NMR), Fourier transform infrared (FT-IR), and ultraviolet-visible (UV-Vis) spectroscopies. Analysis of the UV-Vis spectral analysis of the PAMAM dendrimers showed that the wavelength maximum, Xmax significantly shifted from 330.15 nm to 517.28 nm with the addition of goldthiol nanoparticles due to binding of the thiol functional group to gold particles. …”
    Get full text
    Thesis
  6. 78366

    Phytochemicals and antibacterial activity of piper retrofractum vahl and piper arborescens roxb by Fabarani, Nadya Putri

    Published 2012
    “…The isolated compounds were identified by analysis of various spectral data using infrared, 1D (1H, 13C and DEPT) and 2D (COSY, and HMBC) nuclear magnetic resonance spectroscopies and mass spectrometry. Seven compounds were isolated from these plants. …”
    Get full text
    Thesis
  7. 78367

    Semi-jaringan polimer saling menusuk (Semi-IPN) berasaskan getah asli melalui teknik sinaran by Hirzin, Radin Siti Fazlina Nazrah

    Published 2004
    “…Structural characterization of the HLNR, ALNR and the semi-IPN were investigated by fourier transform infrared (FT-IR) and nuclear magnetic resonance (NMR) spectroscopies. Differential scanning calorimetry (DSC), thermogravimetry analyzer (TGA) and universal testing machine were used to study the physical and mechanical properties of the semi-IPNs. …”
    Get full text
    Thesis
  8. 78368

    Copper modified carbon nitride as fluorescence sensor for nitrate ions by Jasman, S. M., Lintang, H. O., Lee, S. L., Yuliati, L.

    Published 2017
    “…The structure and chemical properties of CN and copper modified CN composites were investigated via X-ray diffraction (XRD), Fourier transform infra-red (FTIR), diffuse reflectance ultraviolet-visible (DR UV-Vis) and fluorescence spectroscopies. Three emission sites represented as C=N, C=O and C-N moieties were suggested to contribute as sensing sites in CN and copper modified CN composites. …”
    Article
  9. 78369

    Chemical constituents of Curcuma Heyneana and Curcuma Zedoaria by Mohd. Yusoff, Nurul Zulaikha

    Published 2017
    “…Their structures were elucidated by spectroscopic method such as IR, 1H NMR and 13C NMR spectroscopies. The antioxidant activity of essential oils and crude extracts were carried out using 2,2-diphenyl-1-picrylhydrazyl radical (DPPH), 2,2?…”
    Get full text
    Thesis
  10. 78370

    Electrophoretically-deposited nano-Fe3O4@carbon 3D structure on carbon fiber as high-performance supercapacitors by Hajalilou, Abdollah, Etemadifar, Reza, Abbasi-Chianeh, Vahid, Abouzari-Lotf, Ebrahim

    Published 2018
    “…The as-prepared samples were characterized by x-ray diffraction, transmission and scanning electron microscopies, Fourier transform infrared and UV–visible spectroscopies as well as by a vibration sample magnetometer. …”
    Article
  11. 78371

    Low-Temperature and UV Irradiation Effect on Transformation of Zirconia -MPS nBBs-Based Gels into Hybrid Transparent Dielectric Thin Films by Viorica Muşat, Elena Emanuela Herbei, Elena Maria Anghel, Michael P. M. Jank, Susanne Oertel, Daniel Timpu, Laurenţiu Frangu

    Published 2022-01-01
    “…The chemical structure of the resulted films was elucidated by X-ray photoelectron (XPS), infrared (IR) and Raman spectroscopies. Their morphology and crystalline structure were observed by scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HR-TEM), and grazing incidence X-ray diffraction. …”
    Get full text
    Article
  12. 78372

    Electrolytic construction of nanosphere‐assembled protective layer toward stable lithium metal anode by Gongxun Lu, Shuai Li, Ke Yue, Huadong Yuan, Jianmin Luo, Yujing Liu, Yao Wang, Xinyong Tao, Jianwei Nai

    Published 2023-11-01
    “…This peculiar SEI is composed of a nanosized Li sphere that is encased with adjustable composition, as proved by cryo‐transmission electron microscopy and multiple surface‐sensitive spectroscopies. Such a three‐dimensional nanosphere‐assembled protective layer has homogeneous components, mechanical strength, and rapid Li‐ion conductivity, enabling it to alleviate the volume expansion and prevent dendrite growth during Li deposition. …”
    Get full text
    Article
  13. 78373

    A Novel Ag-N-heterocyclic Carbene Complex Bearing the Hydroxyethyl Ligand: Synthesis, Characterization, Crystal and Spectral Structures and Bioactivity Properties by Aydin Aktas, Duygu Barut Celepci, Yetkin Gok, Parham Taslimi, Hulya Akincioglu, İlhami Gulcin

    Published 2020-03-01
    “…A structure of the Ag-NHC complex was characterized by using UV-Vis, FTIR, <sup>1</sup>H-NMR and <sup>13</sup>C-NMR spectroscopies and elemental analysis techniques. Also, the crystal structure of the novel complex was determined by single-crystal X-ray diffraction method. …”
    Get full text
    Article
  14. 78374

    Adsorption-Enhanced Ceramic Membrane Filtration Using Fenton Oxidation for Advanced Treatment of Refinery Wastewater: Treatment Efficiency and Membrane-Fouling Control by Haotian Mu, Qi Qiu, Renzhen Cheng, Liping Qiu, Kang Xie, Mingchang Gao, Guicai Liu

    Published 2021-08-01
    “…The effect of the combined process was analyzed using excitation–emission matrix (EEM), ultraviolet-visible (UV-vis) and Fourier transform infrared spectroscopies (FTIR). Compared with direct filtration, the combined process could significantly improve the removal of organic pollution, where the removal rate of the COD and TOC could be 70% and the turbidity removal rate was above 97%. …”
    Get full text
    Article
  15. 78375

    Water-Soluble Star Polymer as a Potential Photoactivated Nanotool for Lysozyme Degradation by Lidia Mezzina, Angelo Nicosia, Laura Barone, Fabiana Vento, Placido Giuseppe Mineo

    Published 2024-01-01
    “…The obtained system (Star3600_Hg) and its behavior as a photo-protease agent were studied by means of several spectroscopies (UV-Vis, fluorescence and circular dichroism), and MALDI-TOF mass spectrometry, showing the cleavage of lysozyme and the appearance of several short-chain residues. …”
    Get full text
    Article
  16. 78376

    Influence of Cupric (Cu<sup>2+</sup>) Ions on the Iron Oxidation Mechanism by DNA-Binding Protein from Starved Cells (Dps) from <i>Marinobacter nauticus</i> by João P. L. Guerra, Daniela Penas, Pedro Tavares, Alice S. Pereira

    Published 2023-06-01
    “…Results obtained using electron paramagnetic resonance (EPR), Mössbauer and UV/Visible spectroscopies revealed that Cu<sup>2+</sup> ions bind to specific binding sites in Dps, exerting a rate-enhancing effect on the ferroxidation reaction in the presence of molecular oxygen and directly oxidizing ferrous ions when no other co-substrate is present, in a yet uncharacterized redox reaction. …”
    Get full text
    Article
  17. 78377

    Interaction of a Short Peptide with G-Quadruplex-Forming Sequences: An SRCD and CD Study by Claudia Honisch, Eugenio Ragazzi, Rohanah Hussain, John Brazier, Giuliano Siligardi, Paolo Ruzza

    Published 2021-07-01
    “…In this work, we analyzed, by circular dichroism and synchrotron radiation circular dichroism spectroscopies, the interaction of a 25-residue peptide deriving from RHAU helicases (<b><i>Rhau25</i></b>) with three G-quadruplex-forming oligonucleotide sequences, in both sodium- and potassium-containing buffers, the most relevant monovalent cations in physiological conditions. …”
    Get full text
    Article
  18. 78378

    Electrochemical Synthesis and Analytical Characterization of Hybrid Zinc/Calcium Antimicrobial Nano‐Oxides for Cultural Heritage Applications by Dr. Margherita Izzi, Dr. Maria Chiara Sportelli, Prof. Rosaria Anna Picca, Prof. Nicola Cioffi

    Published 2023-03-01
    “…Fourier transform infrared, X‐ray photoelectron spectroscopies, and transmission electron microscopy demonstrated that Zn−Ca0.1 consisted of lamellar calcium hydroxyzincate NSs, whereas Zn−Ca0.4 showed hexagonal Ca(OH)2 (∼500 nm) and ZnO (∼50 nm) NSs. …”
    Get full text
    Article
  19. 78379

    Role of Dibenzo Crown Additive for Improving the Stability of Inorganic Perovskite Solar Cells by Miao He, Xinyu Xu, Le Zhang, Fei Lu, Chuwu Xing, Duofa Wang, Tianjin Zhang

    Published 2023-05-01
    “…The morphologies and elemental composition information of the samples were obtained by SEM, XRD, XPS, Raman, and photoluminescence (PL) spectroscopies. The distinct impact of organic DC molecules on the phase, morphology, and optical properties of perovskite films are examined and interpreted with experimental results. …”
    Get full text
    Article
  20. 78380

    Influence of Intramineral Proteins on the Growth of Carbonate Crystals Using as a Scaffold Membranes of Ratite Birds and Crocodiles Eggshells by Nerith R. Elejalde-Cadena, Denisse Hernández, Francesco Capitelli, Selene R. Islas, Maria J. Rosales-Hoz, Michele Zema, Serena C. Tarantino, Dritan Siliqi, Abel Moreno

    Published 2023-11-01
    “…Finally, a topographic and molecular analysis of the biomorphs and membranes was performed by scanning electron microscopy (SEM), Raman and Fourier-transform Infrared (FTIR) spectroscopies.…”
    Get full text
    Article