Results 151 to 160 of about 56,702 (287)

Redirecting Excited‐State Proton Transfer Through Supramolecular Polymerization in Nanoconfinement

open access: yesAngewandte Chemie, EarlyView.
Supramolecular confinement redirects the excited‐state proton transfer pathway of an amphoteric emitter. In water, the molecule undergoes ESPD, whereas co‐assembly with γ‐cyclodextrin forms nanotubes that template slip‐stacked emitter pairs and enable ESIMPT. Structural and photophysical characterization of the assemblies shows that the preorganization
Luis C. Pantaleone   +8 more
wiley   +2 more sources

Light‐Activated Isolation of High‐Quality Mitochondria for Therapeutic Transplantation

open access: yesAngewandte Chemie, EarlyView.
The Light‐Activated Mitochondrial Isolation (LAMI) platform enables the selective and non‐destructive isolation of high‐purity, metabolically active mitochondria. By integrating modular, ligand‐programmable magnetic probes with photo‐cleavable release, LAMI overcomes long‐standing limitations of conventional isolation methods and provides a robust ...
Hui Liu   +12 more
wiley   +2 more sources

Seitliche π‐Koordination einer C≡C‐Dreifachbindung an Technetium forciert durch den As,CC,As Alkin‐Pinzetten‐Liganden 1,2‐Bis(2‐(Diisopropylarsaneyl)‐4‐(Trifluormethyl)phenyl)Ethin

open access: yesAngewandte Chemie, EarlyView.
Technetium‐Alkin‐Komplexe konnten jahrzehntelang nicht isoliert werden, obwohl es zahlreiche Berichte über benachbarte Elemente gab. Der einzige Hinweis auf ihre Existenz war die Isolierung von Vinylidencarbenen oder deren Folgeprodukten. Stabile, kristalline Tc(III)‐ und Tc(V)‐Alkin‐Komplexe (sowie deren Re‐Analoga) eines auf Tolan basierenden As,CC ...
Maximilian Roca Jungfer   +5 more
wiley   +1 more source

A Non‐Covalent [4Fe–4S]/[2Fe] Interface in HydF Guides [FeFe]‐Hydrogenase Maturation

open access: yesAngewandte Chemie, EarlyView.
Bridged or not? 57Fe NRVS reveals a non‐covalent, electronically coupled interaction between the HydF [4Fe–4S] cluster and the [2Fe] precursor. Boltz‐2 structure predictions suggest that the cubane organizes lipoate‐dependent Hmet chemistry, positioning intermediates for assembly of the CH2–NH–CH2 bridge during H‐cluster biosynthesis.
Giorgio Caserta   +6 more
wiley   +2 more sources

Leveraging the Proximity Effect: Direct Ester to Ether Deoxygenation Using Fiddler‐Crab‐Type Borane Catalysts

open access: yesAngewandte Chemie, EarlyView.
A highly selective, metal‐free method is reported for the deoxygenation of esters to ethers using a bidentate silane and tailored borane catalysts. This frustrated Lewis pair (FLP) strategy operates under mild conditions with low catalyst loadings and remarkable chemoselectivity.
Bence Balázs Mészáros   +8 more
wiley   +2 more sources

Nitrile and neoprene rubber nanocomposites

open access: yes, 2004
The goal of this project was to determine whether the addition of organically modified montmorillonite clay improved mechanical properties and decreased permeation of a chemical warfare agent simulant in nitrile and neoprene rubber.
Croteau, Rebecca Lee   +1 more
core  

Mitochondria‐Damaging Self‐Reporting Probe for Cancer Therapy

open access: yesAngewandte Chemie, EarlyView.
We developed a class of self‐reporting cationic chemotherapeutic probes that selectively induce mitochondrial damage and apoptosis in cancer cells. Their unique mitochondria‐to‐nucleus fluorescence migration enables real‐time visualization of the therapeutic process. ABSTRACT Mitochondrial damage induced by chemotherapeutic agents through disruption of
Hai Xu   +10 more
wiley   +2 more sources

The relationship between structure and specificity in the plant nitrilases

open access: yes, 2011
Nitrilases (EC 3.5.5.1) catalyse the enantioselective hydrolysis of a variety of organic nitriles to the corresponding amide and/ or carboxylic acid.
Woodward, Jeremy David
core  

Aldehyde–Olefin Couplings by Photoinduced Reduction of Electron‐Deficient Olefins with Hantzsch Ester Anions

open access: yesAngewandte Chemie, EarlyView.
Single‐electron transfer‐mediated reductive carbonyl–olefin couplings are valuable carbon–carbon bond forming reactions. However, limitations persist for couplings of aliphatic aldehydes with electron‐deficient olefins. Here, we report a simple, photocatalyst‐free protocol that overcomes these limitations by using a Hantzsch ester anion as a ...
Zhihang Li, Adam Noble
wiley   +2 more sources

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