Results 151 to 160 of about 211,629 (261)

ESI‐MS‐Visualization of Cyanoarene Photocatalysts by Specific Supramolecular Interaction with Br‐Anion

Chemistry–Methods, EarlyView.
This study develops a convenient approach to investigate cyanoarene photocatalysts with anion‐enhanced detection AED‐ESI‐HRMS through the signal‐amplified interaction with bromide anions. By combining supramolecular chemistry, DFT calculations, and mass spectrometry, we uncover a novel approach for tracking photocatalyst transformations and elucidating
Nikita S. Shlapakov, Julia V. Burykina, Andrey D. Kobelev, Alexander Yu. Kostyukovich, Mikhail E. Minyaev, Valentine P. Ananikov   +5 more
wiley   +1 more source

Exploring the Adsorption and Reactions of Methyl Radicals on M(111) Surfaces (M=Cu, Ag, Au): A DFT Study

ChemPhysChem, EarlyView.
Methyl radicals, in both aqueous and gaseous phases, spontaneously adsorb onto M(111) (M=Cu, Ag, Au) surfaces. The adsorbed radicals react via the Langmuir‐Hinshelwood mechanism only on gold and silver surfaces at high coverage to produce ethane. Additionally, an Eley‐Rideal mechanism is also possible, producing ethane on Ag(111) and Au(111), and ...
Pankaj Kumar, Dan Meyerstein, Amir Mizrahi, Haya Kornweitz   +3 more
wiley   +1 more source

Hyperchaotic hashing: a chaotic hash function based on 2D linear cross-coupled map with parallel feedback structure. [PDF]

Sci Rep
Xing H, Min R, Li S, Yang Z, Yang Y.
europepmc   +1 more source

Effect of Excitation Wavelength in Single‐Molecule Photochemistry of Terrylene

ChemPhysChem, EarlyView.
Single‐molecule fluorescence microscopy of terrylene shows changes of the fluorescence color from yellow to green along with its photooxidation. The reaction path circumventing the endoperoxide as intermediate among the bifurcated reaction mechanism is boosted with short wavelength excitation and hints to a preformed complex of the aromatic compound ...
Rana Mhanna, Julia Berger, Matthias Jourdain, Stephan Muth, Roger Jan Kutta, Gregor Jung   +5 more
wiley   +1 more source

Key derivation function: key-hash based computational extractor and stream based pseudorandom expander. [PDF]

PeerJ Comput Sci
Chuah CW, Harun NZ, Hamid IRA.
europepmc   +1 more source

A Direct Measurement of the Absolute Energies of Protonated Gly‐Pro‐Gly‐Gly Conformations using Ion Mobility Spectrometry and Guided Ion Beam Tandem Mass Spectrometry

ChemPhysChem, Accepted Article.
Threshold collision‐induced dissociation of conformations selected by ion mobility spectrometry is described as a method to determine their absolute relative energies. Here, the method is demonstrated with the cis and trans conformers of the protonated tetrapeptide, Gly‐Pro‐Gly‐Gly, which differ in the orientation of the peptide bond at the proline ...
Brandon C. Stevenson, Shannon A. Raab, David E. Clemmer, Peter Bruce Armentrout   +3 more
wiley   +1 more source

OzNOxESI: A Novel Mass Spectrometry Ion Chemistry for Elucidating Lipid Double-Bond Regioisomerism in Complex Mixtures. [PDF]

Anal Chem
Smith RA, Omar AM, Mulani FA, Zhang Q.
europepmc   +1 more source

Novel DMAP@Mesoporous Silica Hybrid Heterogeneous Catalysts for the Knoevenagel Condensation: Greener Synthesis through Eco‐friendly Solvents

ChemPlusChem, EarlyView.
This study presents a sustainable approach to functionalizing DMAP by introducing an aminomethyl group for stable anchoring on mesoporous silica supports, creating an effective, recyclable hybrid catalyst. Characterized by techniques like XRD, TGA, and FT‐IR, the hybrid retained stability and showed strong catalytic performance for the Knoevenagel ...
Julio C. Fernandes P. Brito, Fabio Travagin, Mauro Barbero, Cristina Esteban, Urbano Díaz, Alexandra Velty, Giovanni B. Giovenzana, Ivana Miletto, Enrica Gianotti   +8 more
wiley   +1 more source

Roundabout Mechanism of Ion-Molecule Nucleophilic Substitution Reactions. [PDF]

ACS Phys Chem Au
Wu X, Ying F, Wang H, Yang L, Zhang J, Xie J.   +5 more
europepmc   +1 more source

Identifying Key Physical Properties of Simple Organic Drop Cast Films that give Visible to Ultraviolet Light Up‐Conversion

ChemPhotoChem, EarlyView.
Simple dropcast films demonstrate up‐conversion emission from blue to ultraviolet. The low concentration of the sensitizer CBDAC and the π‐stacking of the annihilator PPO – prevented by the TIPS side groups in the TTA‐inactive TIPS‐naphthalene films – are crucial for efficient triplet diffusion and up‐conversion.
Francesco Lodola, Hector Miranda‐Salinas, Suman Kuila, Andrew Danos, Andrew P. Monkman   +4 more
wiley   +1 more source