Results 101 to 110 of about 19,579 (241)

Smart Bioinspired Material‐Based Actuators: Current Challenges and Prospects

open access: yesAdvanced Intelligent Systems, Volume 7, Issue 3, March 2025.
This work gathers, in a review style, an extensive and comprehensive literature overview on the development of autonomous actuators based on synthetic materials, bringing together valuable knowledge from several studies. Furthermore, the article identifies the fundamental principles of actuation mechanisms and defines key parameters to address the size
Alejandro Palacios   +4 more
wiley   +1 more source

Single‐Atom Control of Aromaticity and Excited‐State Dynamics in Endohedral Zirconium–Antimony Zintl Clusters

open access: yesAngewandte Chemie, EarlyView.
Single‐atom growth from [Zr@Sb12]2− to [Zr@Sb13]3− disrupts the closed‐shell S2P6 superatomic configuration and markedly attenuates three‐dimensional (3D) aromaticity. Ultrafast spectroscopy further links stronger spherical aromaticity to slower excited‐state relaxation, establishing an atom‐resolved structure‐aromaticity‐dynamics relationship ...
Yun Zhang   +7 more
wiley   +2 more sources

Separation of Minor Actinides from Lanthanides by Dithiophosphinic Acid Extractants [PDF]

open access: yes, 2008
The selective extraction of the minor actinides (Am(III) and Cm(III)) from the lanthanides is an important part of advanced reprocessing of spent nuclear fuel.
Klaehn, J. R.   +7 more
core  

Valencies of the lanthanides [PDF]

open access: yes, 2017
The valencies of the lanthanides vary more than was once thought. In addition to valencies associated with a half-full shell, there are valencies associated with a quarter- and three-quarter-full shell.
David A. Johnson   +3 more
core   +1 more source

Deciphering the Role of Energy Transfer Configuration in PFAS Recognition by Metal‐Organic Frameworks

open access: yesAngewandte Chemie, EarlyView.
Spatial organization of Eu/Tb centers in EuTb‐FDA MOFs is employed to regulate Tb‐to‐Eu energy transfer configuration for ratiometric PFAS sensing. Directional energy transfer amplifies PFAS‐induced optical perturbations into opposite lanthanide emission responses, with enhanced Tb emission and quenched Eu emission, thereby amplifying the sensing ...
Jiatong Huo   +5 more
wiley   +2 more sources

NHC‐Copper(I)‐Mediated Functionalization of White Phosphorus

open access: yesAngewandte Chemie, EarlyView.
White phosphorus is functionalized by N‐heterocyclic carbene supported copper(I) complexes through redox‐neutral steps. Treatment of the resulting complexes with electrophiles releases the ligands from the metal center as asymmetrically substituted organophosphorus butterfly compounds.
Thomas M. Horsley Downie   +4 more
wiley   +2 more sources

Spectroscopic r-process Abundance Retrieval for Kilonovae. II. Lanthanides in the Inferred Abundance Patterns of Multicomponent Ejecta from the GW170817 Kilonova

open access: yesThe Astrophysical Journal
In kilonovae, freshly synthesized r -process elements imprint features on optical spectra, as observed in AT2017gfo, the counterpart to the GW170817 binary neutron star merger.
Nicholas Vieira   +5 more
doaj   +1 more source

Tunable Oxygen Connectivity in Carbaporphyrinoid Polymers on Metal Surfaces

open access: yesAngewandte Chemie, EarlyView.
Hydroxyl‐functionalized dicarbaporphyrinoid polymers synthesized on Au(111) enable tunable oxygen‐mediated connectivity under UHV conditions. Thermal activation yields one‐dimensional hydroxyl‐terminated polymers that can selectively evolve into either covalently‐linked dibenzo‐p‐dioxane architectures through intermolecular C–O–C coupling or two‐fold ...
Alberto Martínez‐Bajo   +14 more
wiley   +2 more sources

Leaching of Some Lanthanides from Phosphogypsum Fertilizers by Mineral Acids

open access: yes, 2015
The phosphate rock contains trace amounts of uranium and lanthanides. When treating this rock with H2SO4 produces phosphoric acid together with 5 times of its quantity of phosphogypsum (PG) precipitate as a by-product.
F Abdel Hai   +4 more
core  

Lanthanide Exposure In Vitro Differentially Diminishes MTT Cell Viability in Axenic Neuronal or Glial Cell Model Systems

open access: yesInorganics
Applications of lanthanide chemistry have been successful in metallics and the petroleum industry. In the medical realm, lanthanides have shown utility in radiotherapy agents, photodynamic therapy agents, and magnetic resonance imaging (MRI) contrast ...
David C. Platt   +5 more
doaj   +1 more source

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