Functional Piezoresistive Polymer Composites Based on CO₂ Laser-Irradiated Graphene Oxide-Loaded Polyurethane: Morphology, Structure, Electrical and Piezoresistive Prope... by Chiara Mastropasqua, Antonino Veca, Alessandro Damin, Valentina Brunella, Federico Cesano

“…Combining a variety of investigation methods, including scanning electron microscopy (SEM), optical profilometry, IR and Raman spectroscopies, and direct current (DC) and alternate current (AC) electrical measurements, the effects of the laser irradiation were investigated, and the so-obtained electrical properties of laser-activated GO/PU regions were elucidated to unveil their potential use in both static and dynamic mechanical conditions. …”
Get full text

Effect of Calcination Temperature on the Photocatalytic Activity of Zn2Ti3O8 Materials for Phenol Photodegradation by Krisfian Tata Aneka Priyangga, Yehezkiel Steven Kurniawan, Leny Yuliati

“…The ZT materials were characterized using Fourier transform infrared (FTIR), diffuse reflectance ultraviolet-visible (DR UV-vis), and fluorescence spectroscopies. It was confirmed that the ZT materials contained O−Ti−O, Zn−O−Ti, Zn−O, Ti−O−Ti, and Ti−O functional groups as shown from their FTIR spectra. …”
Get full text

Two-dimensional polymer synthesis : towards a two-dimensional replicating system for nanostructures by Mosley, David W

Get full text
Get full text

Low-threshold lasing from colloidal CdSe/CdSeTe core/alloyed-crown type-II heteronanoplatelets by Gao, Yuan, Li, Mingjie, Delikanli, Savas, Zheng, Haiyang, Liu, Baiquan, Dang, Cuong, Sum, Tze Chien, Demir, Hilmi Volkan

“…Through a detailed carrier dynamics investigation using femtosecond transient absorption, steady state, and time-resolved photoluminescence (PL) spectroscopies, we confirmed the type-II band alignment, and found that compared with normal CdSe/CdTe core/crown nanoplatelets (where no ASE/lasing was observed), CdSe/CdSeTe core/alloyed-crown nanoplatelets had a much higher PL quantum yield (75% vs. 31%), a ∼5-fold larger density of type-II charge-transfer states, a faster carrier transfer to interfaces (0.32 ps vs. 0.61 ps) and a slower Auger recombination lifetime (360 ps vs. 160 ps). …”
Get full text

Controllable preparation of noble metal-based nanomaterials for electrocatalytic hydrogen evolution reaction by Li, Yinghao

“…The dynamic changes of the Os electronic structure during the reaction and the reaction mechanisms of HER in different electrolytes are revealed by theoretical calculations and operando X-ray absorption spectroscopies. Finally, the sub-nanometric PdRhMoFeMn high-entropy metallene was developed to gain insights into the multi-site synergistic effects for further increasing their HER performance. …”
Get full text

Synthesis and characterization of new macrocyclic and acyclic schiff base ligands and metal complexes / Karimah Kassim by Kassim, Karimah

“…The ligands and their complexes are characterized by elemental analysis (CHN), infrared, 1H and 13C liquid and solid-state NMR spectroscopies, magnetic susceptibility as well as X-ray crystallography. …”
Get full text

Triblock polyester thermoplastic elastomers with semi-aromatic polymer end blocks by ring-opening copolymerization by Gregory, GL, Sulley, GS, Carrodeguas, LP, Chen, TTD, Santmarti, A, Terrill, NJ, Lee, K-Y, Williams, CK

“…Polymers are characterized using spectroscopies, size-exclusion chromatography (SEC), thermal gravimetric analysis (TGA), differential scanning calorimetry (DSC) and dynamic mechanical thermal analysis (DMTA). …”

Enzymatic syntheses, characterizations and applications of fatty hydroxamic acid derivatives from canola and palm oils by Jahangirian, Hossein

“…The products were characterized by The FT-IR and 1H NMR spectroscopies, CHN elemental analysis and qualitative color test with Cu(II), Fe(III) and V(V) ions. …”
Get full text

Ethanol sensor using tapered optical fiber coated with graphene-based nanomaterials by Girei, Saad Hayatu

“…Graphene and GO thin films were characterized using scanning electron microscopy (SEM),Raman and ultraviolet-visible (UV-Vis) spectroscopies. The working principle of the optical sensor is based on the absorbance changes upon exposure to various ethanol concentrations in water. …”
Get full text

Synthesis and biological activities of O- and C-prenylated flavonoid derivatives by Mohd. Fauzi, Nur Edelin

“…The target compounds were purified by chromatographic methods and the structures of these compounds were determined by using infrared (IR), nuclear magnetic resonance (NMR) and mass spectrometry (MS) spectroscopies. The prenylated precursors were synthesized starting from 2,4-dihydroxyacetophenone (65) and 2,4,6-trihydroxyacetophenone (93). …”
Get full text

Amino-Functionalized Titanate Nanotubes: pH and Kinetic Study of a Promising Adsorbent for Acid Dye in Aqueous Solution by Débora A. Sales, Paloma N. S. Lima, Lucinaldo S. Silva, Thalles M. F. Marques, Suziete B. S. Gusmão, Odair P. Ferreira, Anupama Ghosh, Yuset Guerra, Alan Í. S. Morais, Roosevelt D. S. Bezerra, Edson C. Silva-Filho, Bartolomeu C. Viana

“…It was verified that the crystalline and morphological structures of NaTiNT were preserved after the functionalization, spectroscopies showed that aminosilane interacted covalently with the surface of NaTiNT, and the incorporation of the aminosilane groups on the surface of NaTiNT can be confirmed. …”
Get full text

Formulation of Pharmaceutical Tablets Containing <i>β</i>-Cyclodextrin-4-Methyl-Umbelliferone (Hymecromone) Inclusion Complexes and Study of the Dissolution Kinetics by Eleni Kavetsou, Ioanna Pitterou, Nikos G. Dimitrioglou, Stefanos Kikionis, Eftichia Kritsi, Panagiotis Zoumpoulakis, Eleni Pontiki, Dimitra Hadjipavlou-Litina, Dimitris T. Hatziavramidis, Anastasia Detsi

“…The inclusion complexes (ICs) were characterized using DLS, SEM, TGA as well as FT-IR, UV-vis, and NMR spectroscopies. The release profile of 4-MU from the <i>β</i>-CD-4-MU ICs was studied in three different pH: 1.2 (aqueous hydrochloric acid), 7.4, and 6.8 (phosphate-buffered solutions), to simulate the stomach, physiological, and intestine pH, respectively. …”
Get full text

The Effectiveness of Cyrene as a Solvent in Exfoliating 2D TMDs Nanosheets by Jaber Adam, Manjot Singh, Avazbek Abduvakhidov, Maria Rosaria Del Sorbo, Chiara Feoli, Fida Hussain, Jasneet Kaur, Antonia Mirabella, Manuela Rossi, Antonio Sasso, Mohammadhassan Valadan, Michela Varra, Giulia Rusciano, Carlo Altucci

“…This bio-derived, aprotic, green and eco-friendly solvent produced a stable, surfactant-free, concentrated 2D TMD dispersion with very interesting features, as characterized by UV–visible and Raman spectroscopies. The surface charge and morphology of the fabricated nanoflakes were analyzed using ς-potential and scanning electron microscopy. …”
Get full text

Electrochemical Sensing of Glucose Using Glucose Oxidase/PEDOT:4-Sulfocalix [4]arene/MXene Composite Modified Electrode by Preethika Murugan, Jayshree Annamalai, Raji Atchudan, Mani Govindasamy, Deepak Nallaswamy, Dhanraj Ganapathy, Anatoly Reshetilov, Ashok K. Sundramoorthy

“…A successful formation of PEDOT:SCX/MXene film was confirmed by HR-SEM, Fourier transform infrared (FT-IR), and Raman spectroscopies. Due to the biocompatibility nature, successful immobilization of GOX was carried out onto chitosan modified PEDOT:SCX/MXene/GCE. …”
Get full text

Homologous acetone carboxylases select Fe(II) or Mn(II) as the catalytic cofactor by Krista A. Shisler, William M. Kincannon, Jenna R. Mattice, James Larson, Adam Valaydon-Pillay, Florence Mus, Tamara Flusche, Arnab Kumar Nath, Sebastian A. Stoian, Simone Raugei, Brian Bothner, Jennifer L. DuBois, John W. Peters

“…Electron paramagnetic and Mössbauer spectroscopies identified signatures, respectively, of Mn(II) or Fe(II) bound at the active site. …”
Get full text

Gossypitrin, A Naturally Occurring Flavonoid, Attenuates Iron-Induced Neuronal and Mitochondrial Damage by María Ángeles Bécquer-Viart, Adonis Armentero-López, Daniel Alvarez-Almiñaque, Roberto Fernández-Acosta, Yasser Matos-Peralta, Richard F. D’Vries, Javier Marín-Prida, Gilberto L. Pardo-Andreu

“…Gos–Fe(II) complexes were detected by UV-VIS and IR spectroscopies, with an apparent Gos-iron stoichiometry of 2:1. …”
Get full text

New Napyradiomycin Analogues from <i>Streptomyces</i> sp. Strain CA-271078 by Daniel Carretero-Molina, Francisco Javier Ortiz-López, Jesús Martín, Daniel Oves-Costales, Caridad Díaz, Mercedes de la Cruz, Bastien Cautain, Francisca Vicente, Olga Genilloud, Fernando Reyes

“…The structures of the new napyradiomycins were characterized by HRMS and 1D- and 2D-NMR spectroscopies and their relative configurations were established through a combination of molecular modelling with <i>nOe</i> and coupling constants NMR analysis. …”
Get full text

A Molybdenum(VI) Complex of 5-(2-pyridyl-1-oxide)tetrazole: Synthesis, Structure, and Transformation into a MoO₃-Based Hybrid Catalyst for the Epoxidation of Bio-Olefins by Martinique S. Nunes, Diana M. Gomes, Ana C. Gomes, Patrícia Neves, Ricardo F. Mendes, Filipe A. Almeida Paz, André D. Lopes, Martyn Pillinger, Anabela A. Valente, Isabel S. Gonçalves

“…The characterization of <b>1</b> and <b>2</b> by FT-IR and Raman spectroscopies, as well as ¹³C solid-state NMR, suggests that the bidentate N,O-coordination of Hpto in <b>1</b> (forming a six-membered chelate ring, confirmed by X-ray crystallography) is maintained in <b>2</b>, with the ligand coordinated to a molybdenum oxide substructure. …”
Get full text

G-Quadruplex Aptamer-Ligand Characterization by David Moreira, Daniela Leitão, Jéssica Lopes-Nunes, Tiago Santos, Joana Figueiredo, André Miranda, Daniela Alexandre, Cândida Tomaz, Jean-Louis Mergny, Carla Cruz

“…Firstly, we assessed by circular dichroism, UV and NMR spectroscopies the formation of G4 by AT11-L2. We observed that, for KCl concentrations of 65 mM or less, AT11-L2 adopts hybrid or multiple topologies. …”
Get full text

Attenuation of Combined Nickel(II) Oxide and Manganese(II, III) Oxide Nanoparticles’ Adverse Effects with a Complex of Bioprotectors by Ilzira A. Minigalieva, Boris A. Katsnelson, Larisa I. Privalova, Marina P. Sutunkova, Vladimir B. Gurvich, Vladimir Y. Shur, Ekaterina V. Shishkina, Irene E. Valamina, Oleg H. Makeyev, Vladimir G. Panov, Anatoly N. Varaksin, Ekaterina V. Grigoryeva, Ekaterina Y. Meshtcheryakova

“…The Ni and Mn content of these organs was measured with the help of the atomic emission and electron paramagnetic resonance spectroscopies. We obtained blood leukocytes for performing the RAPD (Random Amplified Polymorphic DNA) test. …”
Get full text