Results 211 to 220 of about 504,986 (312)

Development of a multi‐functional chamber for resonant X‐ray scattering experiments in the tender X‐ray regime at the PAL‐XFEL

open access: yesJournal of Synchrotron Radiation, EarlyView.
A multi‐functional chamber at the Femtosecond X‐ray Scattering endstation of the PAL‐XFEL is introduced, developed for time‐resolved resonant X‐ray scattering experiments in the tender X‐ray regime (2–5 keV).The hard X‐ray undulator line at Pohang Accelerator Laboratory X‐ray Free Electron Laser (PAL‐XFEL) provides a wide range of photon energies ...
Soon Hee Park   +14 more
wiley   +1 more source

Excited‐State Dynamics and Electron‐Withdrawing Group Effects in Two‐Photon Switchable Donor‐Acceptor Stenhouse Adducts

open access: yesChemistry – A European Journal, Volume 31, Issue 22, April 15, 2025.
Two‐photon transformation of donor‐acceptor Stenhouse adducts (DASAs) through non‐linear excitation into a higher singlet state. Direct detection of the upper singlet states was achieved with femtosecond resolution through the fluorescence up‐conversion technique. New DASAs with varying electron acceptor groups show significant improvement in their two‐
Mariana M. Reza   +6 more
wiley   +1 more source

The Relation Between the Excited Electronic States of Acene Radical Cations and Neutrals—A Computational Analysis

open access: yesJournal of Computational Chemistry, Volume 46, Issue 10, April 15, 2025.
Neutral acenes represent an important molecular class for functional organic materials and organic electronics; however, their electronic structure is drastically changed upon ionization, forming radical cations. While the excited states of neutral acenes are well‐characterized, the corresponding radical cations have largely been overlooked.
Anna M. Weidlich, Andreas Dreuw
wiley   +1 more source

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

open access: yesChemPhysChem, Volume 26, Issue 8, April 14, 2025.
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   +3 more
wiley   +1 more source

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