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78361
Electronic delocalization in the radical cations of porphyrin oligomer molecular wires
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. …”
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78362
An investigation of stimulated emission processes in thin-film molecular materials and structures
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 -
78363
On-site interband excitations in resonant inelastic x-ray scattering from Cu2O
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 -
78364
Synthesis, Characterization, In Silico And In Vitro Evaluations Of Benzimidazolium Derived N-heterocyclic Carbenes And Their Silver (I)-nhc Complexes
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. …”
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Thesis -
78365
Synthesis, characterization and evaluation of Pamam Dendrimer-Gold complex as an anion recognition material
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. …”
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Thesis -
78366
Phytochemicals and antibacterial activity of piper retrofractum vahl and piper arborescens roxb
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. …”
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Thesis -
78367
Semi-jaringan polimer saling menusuk (Semi-IPN) berasaskan getah asli melalui teknik sinaran
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. …”
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Thesis -
78368
Copper modified carbon nitride as fluorescence sensor for nitrate ions
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. …”
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78369
Chemical constituents of Curcuma Heyneana and Curcuma Zedoaria
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?…”
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Thesis -
78370
Electrophoretically-deposited nano-Fe3O4@carbon 3D structure on carbon fiber as high-performance supercapacitors
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. …”
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78371
Low-Temperature and UV Irradiation Effect on Transformation of Zirconia -MPS nBBs-Based Gels into Hybrid Transparent Dielectric Thin Films
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. …”
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78372
Electrolytic construction of nanosphere‐assembled protective layer toward stable lithium metal anode
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. …”
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78373
A Novel Ag-N-heterocyclic Carbene Complex Bearing the Hydroxyethyl Ligand: Synthesis, Characterization, Crystal and Spectral Structures and Bioactivity Properties
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. …”
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78374
Adsorption-Enhanced Ceramic Membrane Filtration Using Fenton Oxidation for Advanced Treatment of Refinery Wastewater: Treatment Efficiency and Membrane-Fouling Control
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%. …”
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78375
Water-Soluble Star Polymer as a Potential Photoactivated Nanotool for Lysozyme Degradation
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. …”
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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>
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. …”
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78377
Interaction of a Short Peptide with G-Quadruplex-Forming Sequences: An SRCD and CD Study
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. …”
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78378
Electrochemical Synthesis and Analytical Characterization of Hybrid Zinc/Calcium Antimicrobial Nano‐Oxides for Cultural Heritage Applications
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. …”
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78379
Role of Dibenzo Crown Additive for Improving the Stability of Inorganic Perovskite Solar Cells
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. …”
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78380
Influence of Intramineral Proteins on the Growth of Carbonate Crystals Using as a Scaffold Membranes of Ratite Birds and Crocodiles Eggshells
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.…”
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