Results 101 to 110 of about 68,979 (246)

Steering Oxygen Activation Pathways via Redox Dual‐Defects in 2D Hydrated WO3 for High‐Yield Singlet Oxygen Evolution

open access: yesAdvanced Functional Materials, EarlyView.
Redox dual‐defects (Cs substitution and O vacancies) in 2D hydrated WO3 steer O2 activation toward selective singlet oxygen evolution. WO‐CO achieves 8.6–15.8 times higher 1O2 production than single‐defect or pristine catalysts, enabling efficient pollutant mineralization via a pathway‐selective photocatalytic mechanism.
Sheng‐Qi Guo   +8 more
wiley   +1 more source

π-Stacked Quadruply Hydrogen-Bonded Dimers:  π-Stacking Influences H-Bonding [PDF]

open access: yes, 2016
The effects of π-stacking on the stability of multiply hydrogen-bonded systems are investigated using hybrid DFT calculations on π-stacked quadruply H-bonded dimers of ureidopyrimidinone in its different tautomeric forms.
Rint P. Sijbesma (1788136)   +2 more
core   +1 more source

Time‐Resolved Magnetization Switching Dynamics Driven by Orbital Torques

open access: yesAdvanced Functional Materials, EarlyView.
Du et al. reveal nanosecond magnetization switching driven by orbital currents using time‐resolved Hall detection. The measurements separate domain nucleation from domain wall propagation and show that Joule heating strongly assists switching by lowering energy barriers.
Ao Du   +4 more
wiley   +1 more source

Crystal structures of the three closely related compounds: bis[(1H-tetrazol-5-yl)methyl]nitramide, triaminoguanidinium 5-({[(1H-tetrazol-5-yl)methyl](nitro)amino}methyl)tetrazol-1-ide, and diammonium bis[(tetrazol-1-id-5-yl)methyl]nitramide monohydrate

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2017
In the molecule of neutral bis[(1H-tetrazol-5-yl)methyl]nitramide, (I), C4H6N10O2, there are two intramolecular N—H...O hydrogen bonds. In the crystal, N—H...N hydrogen bonds link molecules, forming a two-dimensional network parallel to (-201) and weak C—
Lauren A. Mitchell   +5 more
doaj   +1 more source

Review of Thermally Activated Twisted Coiled Polymer Actuators: A Materials Science Perspective

open access: yesAdvanced Functional Materials, EarlyView.
Thermally activated twisted and coiled polymer actuators (TCPAs) combine lightweight design, large deformation, and scalable fabrication for soft robotic and wearable applications. This review connects polymer structure, processing history, helix geometry, and thermomechanical characterization to actuator performance, highlighting current challenges in
Nadja Schenk   +3 more
wiley   +1 more source

Structure‐Guided Dynamical Mechanics in Bioinspired Double Twisted Laminated Thin Films

open access: yesAdvanced Functional Materials, EarlyView.
This work explores a dynamic mechanistic study of crack propagation and puncture testing via real‐time monitoring of crack initiation, propagation, and termination through nature‐inspired single and double twisted architectures fabricated from cellulose nanocrystals.
Justin Brackenridge   +4 more
wiley   +1 more source

Comparative Analysis of the Substituent Effects on the Supramolecular Structure of N′-(4-Methyl-2-nitrophenyl)benzohydrazide and N′-(2-Nitro-(4-trifluoromethyl)phenyl)benzohydrazide)

open access: yesCrystals
N′-Phenylbenzohydrazides are valuable precursors for air- and moisture-stable Blatter radicals, with applications in magnetism and spintronics. This study presents the single-crystal X-ray structures of N′-(4-methyl-2-nitrophenyl)benzohydrazide (I) and N′
Christos P. Constantinides   +4 more
doaj   +1 more source

A Study of π – π Stacking Interactions in Rhenium Carbonyl Complexes Based on Backbone Functionalized Bis(pyrazolyl)methane Ligands [PDF]

open access: yes, 2022
π – π Stacking interactions are one of the most important non-covalent inter-molecular forces, which play an important role in the architecture of 1D and 2D networks of supramolecular chemistry.
Guduru, Balamani
core   +1 more source

Functional Blood‐Brain Barrier Crossing by Biomimetic M13 Phage Vectors for Targeted Neuronal Delivery

open access: yesAdvanced Healthcare Materials, EarlyView.
This study investigates the M13 bacteriophage as a biomimetic nanovector capable of crossing in vitro models of the blood–brain barrier. By exploiting peculiar transcellular pathways, M13 avoids lysosomal degradation and preserves its structural integrity and functionality.
Silvia Vercellino   +12 more
wiley   +1 more source

2-Oxo-2H-chromen-4-yl 4-ethylbenzoate

open access: yesIUCrData
In the title compound, C18H14O4, the dihedral angle between the coumarin moiety and the phenyl fragment is 63.46 (5)°. In the crystal, the molecules are linked by weak C—H...O hydrogen bonds and aromatic π–π stacking interactions. A short C=O...π [O...π =
Valentin Bationo   +5 more
doaj   +1 more source

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