Results 121 to 130 of about 53,119 (305)
Rhodium-Catalyzed Oxidative Amidation of Sterically Hindered Aldehydes and Alcohols
, 2016 A rhodium-catalyzed oxidative amidation reaction has been developed with sterically hindered aldehydes and alcohols for the synthesis of amides containing a quaternary carbon at the α position. A variety of amine nucleophiles, both aliphatic and aromatic,
Trang T. Nguyen (1532980) +1 more
core +1 more source
Escaping the Scaling Relationships in Oxygen Reduction Catalysis: Implications for PEM Fuel Cells
Advanced Materials, EarlyView.Escaping the scaling relationships of the oxygen reduction reaction is vital for hydrogen fuel cells. This outlook examines how interfacial heterogeneity, spanning the subsurface lattice, chemisorption layer, and near‐interface solvation volume, mechanistically decouples intermediate binding energetics.
Muhammad Bilal Wazir +2 more
wiley +1 more source
Raman Spectroscopy of Gamma-Irradiated Silicon Doped with Rhodium
East European Journal of PhysicsThis study explores how gamma-ray exposure and rhodium (Rh) impurities affect the crystal structure of silicon using Raman spectroscopy. The introduction of rhodium into silicon single crystals causes subtle structural modifications and leads to the ...
Sharifa B. Utamuradova +4 more
doaj +1 more source
Rhodium-Catalyzed Carbonylative Synthesis of Benzosilinones
, 2019 In this work, a novel and practical procedure for the synthesis of benzosilinones by carbonylative cyclization has been developed. Various benzosilinones were isolated in moderate to good yields, using rhodium as the catalyst with good functional group ...
Xiao-Feng Wu (1617313) +3 more
core +1 more source
Controlling Radiative Phonons in the van der Waals Ferroelectric NbOI2
Advanced Materials, EarlyView.Using a simple mirror geometry, this work demonstrates local‐density‐of‐optical‐states control of THz phonon emission in van der Waals ferroelectric NbOI2. By engineering the photonic environment, the phonon Q‐factor, linewidth, peak frequency, and emission intensity are reversibly tuned by over an order of magnitude, revealing radiative phonons as ...
Baolong Zhang +5 more
wiley +1 more source
Advanced Materials, EarlyView.Ceramic‐based V2O5/Fe3O4 hybrid films are shaped into butterfly‐proboscis‐inspired microscroll actuators. Magnetic triggering initiates unrolling, while geometry‐programmed elastic strain energy drives rapid recoil, enabling fast, reversible, durable, and load‐bearing actuation under near‐field magnetic stimulation.
Semi Kim +5 more
wiley +1 more source
Adsorption‐Engineered Hydrocarbon Ionomers for Durable Proton‐Exchange Membrane Fuel Cells
Advanced Materials, EarlyView.Hydrocarbon ionomers suffer from oxidation‐driven interfacial degradation in PEM fuel cell cathodes, leading to catalyst instability. Here, adsorption‐engineered poly(fluorene) ionomers decouple interfacial anchoring from oxidative degradation, enabling strong catalyst–ionomer interactions while resisting electrochemical oxidation.
Heemin Park +14 more
wiley +1 more source
Deposition of platinum-group metals in sediment and water bodies along the coastal belt of Ghana [PDF]
Maejo International Journal of Science and Technology, 2011 Water and sediment samples from seven water bodies along the coastal belt of Ghana were assessed for the deposition of platinum-group metals (PGM), i.e. platinum, palladium and rhodium.
David K. Essumang
doaj
Rhodium-Catalyzed Asymmetric Conjugate Alkynylation of Enones with Alkynylsilanols
, 2016 Asymmetric conjugate alkynylation of α,β-unsaturated ketones with (triisopropylsilyl)ethynylsilanols giving β-alkynylketones took place in high yields with high enantioselectivity in the presence of chiral rhodium ...
Takahiro Nishimura (1602646) +3 more
core +1 more source