Results 141 to 150 of about 53,639 (282)

Sulfur‐Rich μ‐O Diiron Catalyst for Electrochemical Hydrogen Production

European Journal of Inorganic Chemistry, EarlyView.
A diferric μ‐oxido complex supported by a sulfur‐rich scaffold acts as a proton‐reduction electrocatalyst for H2 production via a μ‐hydroxido species. An aminodithiophenolate scaffold with an NS2 donor set supports diiron complex formation. The diferrous precursor activates O2, giving rise to a diferric μ‐oxido species, which acts as a proton‐reduction
Hugo C. Hernández‐Toledo, Víctor E. López‐Guerrero, Alexander Mondragón‐Díaz, Elvis Robles‐Marín, Marcos Flores‐Alamo, José Manuel Guevara‐Vela, Tomás Rocha‐Rinza, Ivan Castillo   +7 more
wiley   +1 more source

Recent Developments in the Field of Air‐Stable Nickel(0) Precatalysts for Cross‐Coupling Reactions

European Journal of Inorganic Chemistry, EarlyView.
The development of bench‐stable Ni(0) sources aims to replace air‐sensitive [Ni(COD)2] (cod = cycloocta‐1,5‐diene) with easy‐to‐handle alternatives. Through a targeted ligand design, using electron‐deficient dienes, carbenes, and fluorophosphines, researchers have achieved air‐ and moisture‐tolerant complexes that show high catalytic activity in cross ...
Franziska Flecken, Schirin Hanf
wiley   +1 more source

Consecutive (Pseudo‐)Four‐Component Synthesis of Meta‐ and Ortho‐Biaryl Triarylamines with Tunable Emission and Redox Properties

European Journal of Organic Chemistry, EarlyView.
The combination of Suzuki and Buchwald–Hartwig coupling in (pseudo‐)four‐component reactions paves an efficient one‐pot route to twisted, redox‐active triarylamine (TAA) emitters. Biaryl substitution patterns and para‐substituents serve as key levers for tuning redox potentials, as well as absorption and emission energies, complemented and, by time ...
Regina Kohlbecher, Tim Lippert, Hendrik Schröder, Dustin N. Jordan, Christoph Janiak, Thomas J. J. Müller   +5 more
wiley   +1 more source

Semiconducting polymers for gas detection [PDF]

Conjugated polyenes, and polyesters containing phthalocyanine in their backbone, were synthesized. These polymers were characterized by chemical analysis, thermogravimetric analysis, spectral analysis, and X-ray diffraction studies for crystallinity, as ...
Byrd, N. R., Sheratte, M. B.
core   +1 more source

Ferrocene [PDF]

Synlett, 2015
openaire   +1 more source

Electrochemical Dehydration of Carboxamides to Their Nitriles

European Journal of Organic Chemistry, EarlyView.
Electrochemical dehydration of carboxamides to nitriles is achieved using thiocyanate‐mediated activation, avoiding stoichiometric reagents. In an undivided cell at ambient conditions, 18 aromatic and aliphatic substrates give good‐to‐excellent yields (up to 84%) with functional‐group tolerance. Cyclic voltammetry supports an EC‐type‐mediated oxidation.
Enrico Lunghi, Annemijn M. van Koten, Siegfried R. Waldvogel   +2 more
wiley   +1 more source

Glucose Amperometric Biosensor Based on the Co-immobilization of Glucose Oxidase (GOx) and Ferrocene in Poly(pyrrole) Generated from Ethanol / Water Mixtures

Journal of the Brazilian Chemical Society, 2001
The co-immobilization of GOx and ferrocene in a polymeric matrix by a one-step simple method is presented. This procedure to immobilize ferrocene as mediator implies the absence of modification of the monomer or the enzyme that would lead to the loss of ...
Fiorito Pablo A., Torresi Susana I. Córdoba de   +1 more
doaj  

π‐Expanded Fluoranthenes as Chromophores With Tailored Properties

Helvetica Chimica Acta, EarlyView.
A series of π‐expanded fluoranthene scaffolds selectively functionalized with electron donors and acceptors were synthesized. The evolution of the structural, optoelectronic, and redox properties in relation to substitution and cyclization was comprehensively studied both in experiment and in theory. The results identify the compounds as highly tunable
Silas C. Eiden, Erik Misselwitz, John Bergner, Frank Rominger, Milan Kivala   +4 more
wiley   +1 more source

Fluorescent Polyethers Incorporating Perylene Diimide Derivatives: Investigating a Strategy of Limiting Aggregation

Macromolecular Materials and Engineering, EarlyView.
This work focuses on the use of perylene diimide (PDI) in the main polymeric chain of poly(arylene ether)s. It attempts to unlock the emission of PDI by randomly distributing it along the main chain to avoid quenching. This is a strategy that can be incorporated toward developing materials for the active layer of Polymeric Light Emitting Diodes (PLEDs).
Konstantinos C. Andrikopoulos, Stefania Aivali, Aikaterini K. Andreopoulou   +2 more
wiley   +1 more source

Redox‐Active and Electrochromic Aromatic Poly(Ether‐Imide)s With Carbazole‐Triphenylamine Chromophores

Journal of Polymer Science, EarlyView.
A novel ether‐bridged dianhydride monomer based on a carbazole‐triphenylamine (CzTPA) unit has been successfully synthesized, resulting in the development of electroactive and electrochromic poly(ether imide)s that incorporate CzTPA chromophores within the polymer chain.
Wen‐Xuan Chen, Sheng‐Huei Hsiao
wiley   +1 more source