Results 151 to 160 of about 3,653 (216)
From Cages to Sheets: Computational Elucidation of Methylaluminoxane Structure and Reactivity
Methylaluminoxane (MAO), the dominant cocatalyst in metallocene‐based olefin polymerization, has resisted structural characterization for decades. This review traces the computational journey from early cage and nanotube proposals to the identification of two‐dimensional aluminoxane sheets as the thermodynamically preferred motif, and how this ...
Mikko Linnolahti +2 more
wiley +1 more source
Inorganic‐organic hybrid crystals are successfully synthesized with the use of Keggin‐type polyoxotungstate and bolaamphiphiles derived from primary diamines. Three‐dimensional anionic frameworks consisting of polyoxotungstates have been constructed in most cases. As for the dodecatungstophosphate hybrid crystals, the X‐ray‐induced chromic property has
Keita Tomimatsu +7 more
wiley +1 more source
CO2‐Derived Architected Carbons for Sustainable Energy Conversion and Storage
CO2‐derived carbon architectures are systematically engineered via thermochemical, electrochemical, and hybrid pathways to tailor electronic structure, interfacial charge transfer, and catalytic functionality. These materials demonstrate versatile performance across electrocatalysis and energy storage, establishing a coherent framework that links ...
Mohd Ubaidullah +7 more
wiley +1 more source
During host recognition, the fibers of T7 bacteriophages transition from a capsid bound state to an extended conformation, which requires some level of fiber flexibility. By using high‐speed atomic force microscopy, we show that the fibers have an internal molecular hinge and a torsionally compliant coiled‐coil region.
Luca Elizabet Kosik +16 more
wiley +1 more source
This study emphasizes the physical interpretation of Stephens' phenomenological parameters with respect to the nature of dislocations in cubic symmetry, validated through illustrative examples based on modified Williamson–Hall plot analysis.Both the Stephens phenomenological model and the modified Williamson–Hall (mWH) plot analysis address the ...
Ashok Bhakar +3 more
wiley +1 more source
We present a model‐independent approach based on the Shannon sampling theorem to retrieve key structural parameters of proteins and core–shell micelles directly from small‐angle X‐ray scattering (SAXS) profiles. By bypassing the pair distribution function, the method overcomes q‐truncation artifacts and provides reliable mass, size and aggregation ...
Liberato De Caro +7 more
wiley +1 more source
Microsecond X‐ray reflectometry
X‐ray reflectometry is accelerated to 213 µs net exposure time using galvanometer scanning, which enables unprecedented temporal resolution for studying dynamic thin‐film processes.We accelerate synchrotron X‐ray reflectometry (XRR) by more than an order of magnitude and demonstrate the acquisition of full reflectivity curves within 213 µs over a qz ...
Michael Haberl +6 more
wiley +1 more source
X‐ray‐induced hydride formation in palladium nanowires in a gaseous hydrogen environment
Powder diffraction is used to reveal X‐ray‐induced hydride formation in palladium nanowires in a gaseous hydrogen environment.Palladium hydrides are promising systems for hydrogen sensors and hydrogen storage, making the study of hydride formation in nanoparticles highly relevant. Lately, such studies have often been performed in situ or operando using
Hanna Sjö +6 more
wiley +1 more source
Quantifying resolution in pink‐beam dark‐field X‐ray microscopy: experiments and simulations
A quantitative comparison between pink‐beam and monochromatic dark‐field X‐ray microscopy (DFXM) shows that pink‐beam DFXM offers up to two orders of magnitude higher flux and improved signal‐to‐noise ratio for time‐resolved imaging, at the expense of an approximately tenfold loss in angular resolution.
M. La Bella +6 more
wiley +1 more source
Convergent‐beam X‐ray crystallography
Molecular crystal diffraction with a highly focused X‐ray beam decouples crystal morphology and molecular structure by measuring magnified topographs from every reflection.Molecular and polymeric crystals show a wide range of functional properties that arise from the interplay between the atomic‐scale structure of their constituent molecules and the ...
Chufeng Li +21 more
wiley +1 more source

