Water‐Derived Radical Species Initiate Six‐Electron Oxidation of Cyclic Ketones in Microdroplets
Angewandte Chemie, EarlyView.Spontaneous six‐electron oxidation of cyclic ketones to yield dicarboxylic acids/keto acids is achieved in ethanol microdroplets containing about 2% water under ambient conditions without any metal salts, acids, or oxidants. Mechanistic studies show that trace amounts of water and molecular oxygen serve as active oxidants in this transformation ...
Muhammad Mujahid Ali +3 more
wiley +2 more sources
Recent uses and applications of nuclear magnetic resonance, isotope ratio mass spectrometry and high-resolution mass spectrometry for authenticity and geographical origin of wines. [PDF]
Food Sci BiotechnolKercher MM +3 more
europepmc +1 more source
Advanced NanoBiomed Research, EarlyView.Beyond the green solvent paradigm, this review redefines Deep Eutectic Systems (DES) as programmable supramolecular nanoassemblies. We survey their biomedical convergence: stabilizing thermolabile mRNA to enable cold chain‐free logistics, reshaping transdermal microneedle delivery, enabling long‐term wearables via eutectogels, and utilizing Generative ...
Jeesu Moon, Min Seo Kim, Jae‐Seung Lee
wiley +1 more source
A simple and cost-effective sample preparation and storage method for stable isotope analysis of atmospheric CO2 for GasBench II/continuous flow isotope ratio mass spectrometry. [PDF]
Rapid Commun Mass SpectromManaj S, Kim ST.
europepmc +1 more source
New Water Oxidation Mechanism in Photosystem II Resolves Major Experimental Controversies
Angewandte Chemie, EarlyView.In Photosystem II Oxygen Evolving Complex, we discovered the O3‐O6 peroxide at lower energy. Assignment of the O3 ligated by histidine (His337) as a slow exchanging substrate and its coupling with O6 give the O─O bond formation mechanism most consistent with all currently available experimental data. Proposal shows how protein environment can steer the
Yulia Pushkar
wiley +2 more sources
Hyperpolarization of Pyridine 15N‐Oxide Molecular Probes Enabled by Parahydrogen
Angewandte Chemie, EarlyView.Pyridine 15N‐oxides are introduced as motifs for hyperpolarization studies and biochemical applications are demonstrated. ABSTRACT Magnetic resonance (MR) is a powerful non‐invasive technique for probing structural, functional, and metabolic processes with high spatial and temporal resolution.
Ruhuai Mei +8 more
wiley +2 more sources
Using stable oxygen isotope dual-inlet isotope-ratio mass spectrometry to elucidate uranium transport and mixed 230Th/U calcite formation ages at the seminal Devils Hole, Nevada, natural laboratory. [PDF]
Rapid Commun Mass SpectromCoplen TB +4 more
europepmc +1 more source
Structural and Functional Siderophore Remodeling by Enzymatic Delipidation
Angewandte Chemie, EarlyView.A surprising functional switch in bacterial siderophores was discovered through genome mining and the analysis of environmental and pathogenic Pandoraea species. Pandorachelin B, a lipocyclopeptide that promotes swarming motility, is cleaved by a specialized acylase, yielding a ring‐contracted, homodetic cyclopeptide, pandorachelin A, which exhibits ...
Elena Herzog +5 more
wiley +2 more sources
Angewandte Chemie, EarlyView.Mechanistic studies on model Cu─M/SiO2 catalysts (M = Zn, Ga, and In) reveal that promoters enable a formate spillover pathway from Cu to Mn+ (n = 2 or 3) sites. The promoter's electronic effect on formate bond strengths serves as a quantitative descriptor for activity and selectivity, balancing spillover dynamics with intermediate stabilization to ...
Nat Phongprueksathat +6 more
wiley +2 more sources
Gas chromatography-stable isotope ratio mass spectrometry prior solid phase microextraction and gas chromatography-tandem mass spectrometry: development and optimization of analytical methods to analyse garlic (Allium sativum L.) volatile fraction. [PDF]
HeliyonPianezze S +3 more
europepmc +1 more source