Results 161 to 170 of about 1,856,713 (355)

Photochemistry of Aromatic N‐Oxides in Water Probed by Time‐Resolved X‐ray Absorption Spectroscopy

Chemistry – A European Journal, EarlyView.
Time‐resolved XAS at the nitrogen and oxygen K‐edges is applied to the photorearrangement of two N‐oxides in water. Pyridine N‐oxide rapidly forms the oxaziridine isomer. Pyridazine N‐oxide undergoes ring opening to the diazo compound, without any evidence of intermediates.
Maximilian Paradiz Domínguez, Robby Büchner, Mattis Fondell, Albert M. Brouwer   +3 more
wiley   +1 more source

Linear and Two‐Dimensional Infrared Spectroscopy of the Multifunctional Vibrational Probe, 3‐(4‐Azidophenyl) Propiolonitrile. Deperturbing a Fermi Triad by Isotopic Substitution

ChemPhysChem, Volume 26, Issue 6, March 15, 2025.
Linear infrared spectroscopy combined with isotope labeling and density functional theory unravels the origin of a Fermi triad in a multifunctional vibrational chromophore. Ultrafast 2DIR‐spectroscopy reports directly on the dynamics and the intramolecular vibrational energy flow pathways in the isotopically deperturbed system. Abstract Infrared probes
Claudia Gräve, Jörg Lindner, Stefan Flesch, Luis I. Domenianni, Peter Vöhringer   +4 more
wiley   +1 more source

Single GAF Domain Phytochrome Exhibits a pH‐Dependent Shunt on the Millisecond Timescale

ChemPhysChem, Volume 26, Issue 6, March 15, 2025.
During their light‐induced photocycle, phytochromes can engage in a thermal reversion back to the initially excited state, denoted as a shunt. This study investigates a pH‐dependent shunt transition in the Pfr state of the All2699g1 phytochrome from Nostoc punctiforme using UV/Vis laser flash photolysis and kinetic modeling. The findings suggest a keto‐
Florian Trunk, Lisa Köhler, Tobias Fischer, Wolfgang Gärtner, Chen Song, Chavdar Slavov, Josef Wachtveitl   +6 more
wiley   +1 more source

Operando Monitoring Interfacial pH Gradients and Ion Kinetics in Proton‐Coupled Electron Transfer Reactions through Dual‐Loop Electrochemical Methodology

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
We present a dual‐loop methodology for real‐time mapping of interfacial pH that distinguishes electric field effects from changes in proton activity. This universal tool reveals significant pH gradients and identifies ion mobility and buffer capacity as key regulators, providing crucial insights for optimizing electrocatalyst performance in energy ...
Pengbo Ding, Zhuoao Li, Lixiu Guan, Dan Xing, Qitao Lian, Zixiang Bai, Junguang Tao   +6 more
wiley   +1 more source

Ultrafast in‐memory computing and highly efficient deep neural networks driven by phase‐change memory materials with partially amorphous state transitions

InfoScience, EarlyView.
This work addresses challenges including the nonlinear weight‐conductance update and the trade‐off between increasing melting uniformity and reducing solid‐to‐liquid transition time. It utilizes all four melting states to create an integrated framework for attaining in‐memory computing and deep neural network applications. The framework achieves a near‐
Kian‐Guan Lim, Shao‐Xiang Go, Qiang Wang, Dong‐Gwan Kim, Chan‐Hwi Baek, Qishen Wang, Tae Hoon Lee, Desmond K. Loke   +7 more
wiley   +1 more source

Intravital Visualization of Tattoo Particles After Picosecond Laser Treatment. [PDF]

Skin Res Technol
Nguyen L, Mess C, Huck V, Schneider SW, Herberger K.   +4 more
europepmc   +1 more source

Elucidating the origin of open‐circuit voltage in ternary organic solar cells with a nonfullerene and a fullerene acceptor

InfoMat, EarlyView.
Fullerenes tend to alloy with polymer:nonfullerene acceptor hosts, yielding composition‐dependent increases in open‐circuit voltage while recombination remains governed by the charge‐transfer state energy and is independent of the nature of the third component.
Dominic Blätte, Marcella Günther, Carlito S. Ponseca Jr., Andreas Weis, Rik Hooijer, Lucie Quincke, Miguel A. T. Cachafeiro, Wolfgang Tress, Jose D. Perea, Salvador Leon, Ali Shuaib, Pavel Chabera, Tönu Pullerits, Thomas Bein, Tayebeh Ameri   +14 more
wiley   +1 more source

Numerical Simulation and Experimental Study on Picosecond Laser Polishing of 4H-SiC Wafer. [PDF]

Micromachines (Basel)
Yan Y, Cheng Y, Chen S, Tang Y, Zhang F, Gao P.   +5 more
europepmc   +1 more source

Femtosecond Förster energy transfer over 20 A in Phycoerythrocyanin (PEC) trimers [PDF]

, 1993
Fischer, R., Gillbro, T., Martin, J.-L., Migus, A., Mourou, G. A., Palsson, L. O., Scheer, Hugo, Sharkov, A. V., Zewail, A. H.   +8 more
core   +1 more source

Deep Learning Integration in Optical Microscopy: Advancements and Applications

Microscopy Research and Technique, EarlyView.
It explores the integration of DL into optical microscopy, focusing on key applications including image classification, segmentation, and computational reconstruction. ABSTRACT Optical microscopy is a cornerstone imaging technique in biomedical research, enabling visualization of subcellular structures beyond the resolution limit of the human eye ...
Pottumarthy Venkata Lahari, Sagnika Dutta, H. Deeksha, Samreen A. Patel, Budheswar Dehury, Nirmal Mazumder   +5 more
wiley   +1 more source