Results 131 to 140 of about 60,342 (271)

Tailoring the Melting and Glass Transition Behavior of Zeolitic Imidazolate Frameworks via Ammonium Halide Salts

Small, EarlyView.
Ammonium halide salts serve as inorganic modifiers that lower the melting and glass transition temperatures of zeolitic imidazolate frameworks, enabling centimeter‐scale hybrid glasses and melt processing of otherwise unmeltable ZIF‐8. In situ imaging and pair distribution function analysis reveal salt infiltration, Zn─N bond disruption, and Zn–halide ...
Fengming Cao, Søren S. Sørensen, Anders K. R. Christensen, Xuan Ge, Martin A. Karlsen, Giulio Monaco, Lothar Wondraczek, Morten M. Smedskjaer   +7 more
wiley   +1 more source

Oxophilic Yb2O3 nanoparticles as radical scavengers to enhance the durability of Fe–N–C oxygen reduction catalysts

Smart Molecules, EarlyView.
Fe–N–C catalysts suffer from radical attack during oxygen reduction. By immobilizing oxophilic Yb2O3 nanoparticles near Fe–N4 sites as efficient radical scavengers, the catalyst achieves enhanced activity and stability. Abstract The practical application of Fe–N–C catalysts in proton exchange membrane fuel cells is substantially limited by their ...
Jiayu Liu, Shuang Li, Huijuan Li, Xin Wan, Jianglan Shui   +4 more
wiley   +1 more source

Ligand‐Controlled Tunable Distal C(sp2)–H Functionalization of Aryl and Benzyl Phosphonates

Transformative Chemistry, EarlyView.
The switchable borylation of aryl and benzyl phosphonates with good to excellent regioselectivity was demonstrated. Through orthogonal transformation of Horner–Wadsworth–Emmons olefination and Suzuki–Miyaura cross coupling, a variety of styrene derivatives were obtained with precise site control.
Han Ang, Yajun Wang, Jiawei Ma, Shengmeng Qin, Shuo Lu, Wenju Chang, Yong Liang   +6 more
wiley   +1 more source

Nickel Foam Electrodes—A Versatile, Powerful, and Readily Available Tool in Electro‐Organic Synthesis

The Chemical Record, EarlyView.
Nickel foam—one material, two faces, and several versatile roles depending on electrolytic conditions. For more than 50 years, nickel foam electrodes have served in electrosynthesis as powerful and readily available electrode materials. Due to their inexpensive nature and easy handling, they have been widely employed.
Rok Narobe, Johannes Schneider, Siegfried R. Waldvogel   +2 more
wiley   +1 more source

Oxidative Stress Biomarkers in the Shrimp Macrobrachium amazonicum (Heller, 1862): Assessment in an Environmental Preservation Area in the Brazilian Amazon

Environmental Toxicology, EarlyView.
ABSTRACT Anthropogenic activities generate a significant amount of pollutants that are released into the environment, causing physiological and ecological disturbances. Among the xenobiotics present in aquatic ecosystems, numerous chemical and organic compounds have oxidative potential or are metabolized through oxidative processes, which may amplify ...
Natália Eduarda da Silva, Arllon José dos Santos Dias, Layane Vitoria dos Santos e Santos, Natalie de Matos Araujo, Darlan Coutinho dos Santos, Jefferson Romáryo Duarte da Luz, Gabriel Araujo‐Silva   +6 more
wiley   +1 more source

2-(2-Hydroxy-5-methyl-3-formylphenyl)-imidazo[4,5-f][1,10]-phenanthroline

Molbank, 2003
n ...
Liang-Nian Ji, Xian-Lan Hong, Cai-Wu Jiang, Hui Chao   +3 more
doaj   +1 more source

Tuning the Photochemistry of Entatic State Model Systems

Zeitschrift für anorganische und allgemeine Chemie, EarlyView.
We present the photochemistry of the entatic state model [Cu(DMEGqu)2]+/2+, a copper guanidino‐quinoline complex pair. By transient IR and UV/Vis spectroscopy, we obtained the lifetimes of the different excited states. We show that the structural effect of the guanidine tunes the photochemistry of this entatic state model.
Alexander Hoffmann, Julia Stanek, Stefan Hofmann, Michael Rampp, Benjamin Maerz, Benjamin Grimm‐Lebsanft, Melissa Kindler, Tobias Seitz, Michael Rübhausen, Wolfgang Zinth, Sonja Herres‐Pawlis   +10 more
wiley   +1 more source

Liquid jet capabilities for ultrafast chemistry at the SwissFEL Alvra instrument

Journal of Synchrotron Radiation, EarlyView.
The technical aspects of the Alvra endstation are outlined and its scientific capabilities are demonstrated with commissioning results obtained during the early years of SwissFEL's operation.The Alvra experimental station at the Swiss X‐ray free‐electron laser, SwissFEL, investigates ultrafast dynamics in chemical and biological systems using X‐ray ...
Claudio Cirelli, Emma Victoria Beale, Florian Dworkowski, Victoria Kabanova, Sven Augustin, Gregor Knopp, Chris Milne, Christoph Bostedt, Philip J. M. Johnson, Camila Bacellar   +9 more
wiley   +1 more source

Ultrasonic Extraction of Trace Iron in Iron Tailings with Ionic Liquid [Emim]PF6-Phenanthroline

Yankuang ceshi, 2013
Iron tailings are not only a waste of resource, but also bring serious environmental pollution. On account of the complex components and lower iron content in iron tailings, the ultrasonic extraction system of ionic liquid [Emim]PF6-phenanthroline to ...
MA Yi-hong, LI Zhong-ping, YIN Yi-qing
doaj  

Electrochemical decolorization of acid dye baths and their reuse potential in subsequent textile dyeing processes

Coloration Technology, EarlyView.
Abstract This study investigates the electrochemical decolorization of waste acid dye baths and evaluates their potential reuse in subsequent textile dyeing processes. Four different anode materials (iron, aluminum, stainless steel and graphite) were examined to optimize color removal efficiency and assess the influence of electrochemically generated ...
Yunus Emre Kayserili, Asım Davulcu
wiley   +1 more source