Results 41 to 50 of about 1,666 (180)

Investigation of the spectroelectrochemical behavior of quercetin isolated from Zanthoxylum bungeanum

Open Chemistry, 2021
Flavonoids are common bioactive components in plants. Quercetin is the most abundant flavonoid in the human diet, accounting for more than half of the total daily consumption of flavonoids.
Wang Jun, Liu Linxiang, Jiang Jianwei
doaj   +1 more source

The Influence of pH and Halide Ions on Cefuroxime Electrochemical Degradation

International Journal of Electrochemical Science, 2022
An optimal combination of pH and halide ion is considered an effective strategy for the removal of cefuroxime from wastewater accrued from hospitals and clinical laboratories.
Bogdan Tutunaru, Bogdan Oprea
doaj   +1 more source

Green Electrochromic Film Formation via Phenylcarbazole Polymerization in Ionic Liquids

Chemistry – A European Journal, EarlyView.
The scheme depicts the three‐step electropolymerization of two electrochromic polycarbazole derivatives, 4‐(9H‐carbazol‐9‐yl)phenol and 4‐(3‐methoxy‐9H‐carbazol‐9‐yl)phenol, performed at constant potential using the green ionic liquid BMIM TFSI. This medium enables controlled polymer growth and enhances electrochromic performance, yielding robust and ...
Carolina Gascó, Sara Santiago, Rosa Maria Sebastián, Gonzalo Guirado   +3 more
wiley   +1 more source

On the Preparation and Spectroelectrochemical Characterization of Certain 2,5‐Bis(het)aryl Substituted Thiophenes

ChemElectroChem
In this work, a series of novel 2,5‐bis(het)aryl and 2,5‐bis‐thienyl substituted thiophenes have been synthesized and characterized by ultraviolet‐visible‐near infrared (UV‐Vis‐NIR) absorption and fluorescence spectroscopy as well as cyclic voltammetry ...
Dr. Evgenia Dmitrieva, Dr. Jens Barche, Dr. Alexey A. Popov, Prof. Dr. Horst Hartmann   +3 more
doaj   +1 more source

Voltabsorptmetric Study for the One-electron Reduction of Methyl Viologen Using Higher-order Derivative Spectral Method

Electrochemistry
A voltabsorptmetric study of redox properties of methyl viologen in an optically transparent thin-layer electrode cell was performed. The obtained UV-visible absorption spectra were analyzed using a higher-order derivative conversion (HODC) method.
Shinya KISHIOKA
doaj   +1 more source

Redox‐Active Bisphosphines Based on a W(II)‐Propargyl Complex Backbone

European Journal of Inorganic Chemistry, EarlyView.
Three bisphosphine ligands based on tungsten(II) propargyl‐type alkyne complexes were synthesized and characterized. The methanolate derivative was used as a metalla‐ligand for the preparation of a binuclear bisphosphine‐κ2‐PdCl2 complex. In both cases, IR spectroelectrochemistry (IR‐SEC) measurements revealed a successive process following oxidation ...
Friederike M. Hamann, Dirk Michalik, Martina Beese, Anke Spannenberg, Alexander Villinger, Klaus Neymeyr, Robert Francke, Wolfram W. Seidel   +7 more
wiley   +1 more source

Ground‐ and Excited‐State Mixed Valency in a 4,4′‐Bipyridine‐Bridged Bimetallic Di‐Ruthenium Complex

European Journal of Inorganic Chemistry, Volume 29, Issue 16, 4 June 2026.
Photoinduced mixed‐valence interactions across a 4,4′‐bpy bridge were studied. MLCT excited states in the bimetallic complex are longer‐lived than in the monometallic reference, thanks to metal–metal electronic coupling and hole delocalization, but are still shorter than the nanosecond timescale relevant for diffusional reactivity.
Ivana Ramírez‐Wierzbicki, Frank W. Heinemann, Leonardo D. Slep, Alejandro Cadranel   +3 more
wiley   +1 more source

Turning Electrode Orientation into a Design Parameter: Gravity‐Driven Convection for Coupling Electrochemical and Enzymatic Reactions

ChemElectroChem, Volume 13, Issue 11, 3 June 2026.
Electrochemically induced density gradients are harnessed to drive gravity‐dependent convection at partially fouled electrodes. By controlling electrode orientation and surface heterogeneity, mass transport is enhanced without external stirring. This enables coupling of electrochemical reactions with enzyme catalysis on insulating domains, exemplified ...
Wathsala Prasadini Kapuralage, Jesse Fletcher, K. Swaminathan Iyer, Simone Ciampi   +3 more
wiley   +1 more source

Tetraruthenium Metallamacrocycles with Potentially Coordinating Appended Functionalities

Inorganics, 2018
We present four new tetraruthenium macrocycles built from two 1,4-divinylphenylene diruthenium and two isophthalic acid building blocks with peripheral, potentially mono- or tridentate donor functions attached to the isophthalic linkers.
Patrick Anders, Mario Robin Rapp, Michael Linseis, Rainer F. Winter   +3 more
doaj   +1 more source

Moving Beyond Oligoethers: Polar Side‐Chain Engineering for Aqueous Mixed Ionic–Electronic Conductors

Advanced Functional Materials, Volume 36, Issue 49, 18 June 2026.
We investigate how side‐chain chemistry and hydrogen bonding affect electrochemical doping in poly(propylenedioxythiophene) polymers. Replacing oligoether side chains with hydroxyl or carboxylic acid groups nearly triples electrochemical conductivity.
Joshua M. Rinehart, Anna M. Österholm, James F. Ponder Jr., Lucas Q. Flagg, Lee J. Richter, John R. Reynolds   +5 more
wiley   +1 more source