Results 81 to 90 of about 46,450 (213)

The making of pure quartzose sand in continental interiors: Paraná River (Brazil and Argentina)

Sedimentology, EarlyView.
ABSTRACT As part of a comprehensive project on sedimentary processes in South America, this study focuses on sediment generation in the intracratonic Paraná Basin and monitors the evolution of sand composition along the Paraná River from central Brazil to the Río de la Plata estuary in Argentina.
Eduardo Garzanti, Marta Barbarano, Mara Limonta, Guido Pastore, Pieter Vermeesch, Giovanni Vezzoli   +5 more
wiley   +1 more source

Electroluminescence of new coordination compounds of europium ions with β-diketones, acetic and butyric acids [PDF]

Научно-технический вестник информационных технологий, механики и оптики
In this work, organic light-emitting LEDs based on Eu3+ coordination compounds with β-diketones and acetic and butyric acids were created and studied.
Anna V. Osadchenko, Sergey A. Ambrozevich, Ivan A. Zakharchuk, Andrey A. Vashchenko, Daniil S. Daibagya, Alexandr V. Ryzhov, Dmitry N. Pevtsov, Nikolai V. Pevtsov, Alexandr S. Selyukov   +8 more
doaj   +1 more source

Spin-filter effect of the europium chalcogenides: An exactly solved many-body model

, 1998
A model Hamiltonian is introduced which considers the main features of the experimental spin filter situation as s-f interaction, planar geometry and the strong external electric field.
E. Ising, E. Kisker, E. Kisker, E. O. Kane, F. Rys, G. Baum, G. H. Wannier, G. Schönhense, H. C. Siegmann, M. Born, M. Donath, M. Takahashi, N. Müller, R. Allenspach, R. Metzke, R. Schiller, W. Borgiel, W. Heisenberg, W. Nolting, W. Nolting, W. Nolting, W. Nolting, W. Nolting, W. Nolting, W. Nolting, W. Nolting, W. Shockley   +26 more
core   +1 more source

Synthesis, structures and cytotoxicity studies of p-sulfonatocalix[4]arene lanthanide complexes [PDF]

, 2016
A number of p-sulfonatocalix[4]arene complexes of the lanthanides (Tb, Gd, and Eu) have been prepared, some in the presence of tetraazamacrocycle 1,4,7,10-tetraazacyclododecane-1,4,7-triacetic acid (DO3A), and fully characterised.
Archibald, Stephen J., Burke, Benjamin P., Miller-Shakesby, David M., Nigam, Shubhanchi, Prior, Timothy J., Redshaw, Carl, Stasiuk, Graeme J.   +6 more
core   +2 more sources

Synthesis, Structure, and Eu3+‐Activated Photoluminescence of the Mixed‐Anion Carbodiimide NaLa2F3(CN2)2

Zeitschrift für anorganische und allgemeine Chemie, Volume 652, Issue 4, 17 March 2026.
NaLa2F3(CN2)2 forms via solid‐state metathesis of LaF3 and Na2(CN2) at 550°C and remains stable under ambient air and humidity. The structure is based on [La(NCN)5F4] polyhedra with interstitial Na+; revealing an unconventional red emission when doped with Eu3+.
Albert T. Schwarz, Markus Ströbele, David Enseling, Thomas Jüstel, H.‐Jürgen Meyer   +4 more
wiley   +1 more source

Development of Tunable Materials From Well‐Defined Alendronic Acid Functionalized Polyacrylamide: An Opportunity for Actinide Decontamination

Journal of Polymer Science, Volume 64, Issue 6, Page 1431-1443, 15 March 2026.
Alendronate‐based copolymers for Nd and Ce recovery. ABSTRACT Bisphosphonic acid groups are emerging as promising functionalities for actinide decontamination, due to their high density of chelating sites. However, the chemistry of bisphosphonate (in particular alendronate) materials remains complex and underexplored.
Vincent Darcos, Loona Ferrie, Carlos Arrambide, Gabriele Vecchio, Nicolas Dacheux, Stephane Pellet‐Rostaing, Benedicte Prelot, Sophie Monge   +7 more
wiley   +1 more source

Fluorescence Properties and Mg2+ Selectivity of Aryl‐Alkynyl Derivatives of the o‐Aminophenoltriacetate (APTRA) Ligand

Chemistry – A European Journal, Volume 32, Issue 10, 9 March 2026.
It is a challenge to improve the selectivity of high‐denticity ligands for Mg2+ over Ca2+. We show that in aryl‐alkynyl derivatives of APTRA, electron‐withdrawing substituents lower the binding affinity for Ca2+ more than Mg2+, making the ligand more selective for Mg2+.
Laura L. Duncan, Christopher Hogg, J. A. Gareth Williams   +2 more
wiley   +1 more source

Characterization of Nanocrystals of Eu-Doped GaN Powders Obtained via Pyrolysis, Followed by Their Nitridation

Photonics
Nanocrystals of Eu-doped GaN powders are produced via pyrolysis of a viscous compound made from europium and gallium nitrates. Furthermore, carbohydrazide is used as a fuel and toluene as a solvent; subsequently, a crucial nitridation process is carried ...
Erick Gastellóu, Rafael García, Ana M. Herrera, Antonio Ramos, Godofredo García, Gustavo A. Hirata, José A. Luna, Roberto C. Carrillo, Jorge A. Rodríguez, Roman Romano, Yani D. Ramírez, Francisco Brown, Antonio Coyopol   +12 more
doaj   +1 more source

Silent Partners in the Mill: Unveiling the Role of Additives in Mechanochemical Synthesis

Chemistry – A European Journal, Volume 32, Issue 9, 2 March 2026.
Mechanochemistry offers a sustainable, solvent‐free alternative to traditional synthesis, often enhanced by additives in a process known as additive‐assisted grinding. This review discusses how various additives, including liquids, ionic solids, and advanced materials like ionic liquids and piezoelectric compounds, improve reaction efficiency ...
Johanna Breinsperger, Nika Podlesnik, Francesco Mele, Michael Schnürch   +3 more
wiley   +1 more source

Dielectric relaxation studies of Eu3+ doped graphene oxide nano layers

Discover Materials
A bulk of graphene oxide nanosheets was prepared using the modified Hummers’ method. Rare earth materials, such as europium nitrate pentahydrate compounds, are added to graphene oxide in varying percentages to study the dielectric behavior of graphene ...
Nikhila Ann Abraham, I. Dhanya, Sreejith K. Pisharady   +2 more
doaj   +1 more source