Angewandte Chemie International Edition

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Decarboxylative Borylation of Stabilized and Activated Carbon Radicals

A general decarboxylative borylation protocol of aliphatic and aromatic carboxylic acids has been developed. Both stabilized and activated aryl and alkyl radicals could be generated from the leaving‐group‐assisted N‐hydroxybenzimidoyl chloride esters, even trifluoroethyl substrates could be activated for further elaboration. Abstract Redox‐active...

Refolding of Cold‐Denatured Barstar Induced by Radio‐Frequency Heating: A New Method to Study Protein Folding by Real‐Time NMR Spectroscopy

A state‐of‐the‐art temperature‐jump probe head is used in combination with real‐time 2D NMR experiments to study the kinetics of folding of a cold‐denatured protein. Barstar contains two prolines that adopt a mix of cis and trans conformations in the cold‐denatured state. The high time resolution measurements reported here show evidence for multiple...

B‐Site Co‐Alloying with Germanium Improves the Efficiency and Stability of All‐Inorganic Tin‐Based Perovskite Nanocrystal Solar Cells

CsSn0.6Ge0.4I3 nanocrystals have been synthesized for the first time by a B‐site co‐alloying strategy. The introduction of Ge effectively decreases the high density of intrinsic Sn defects, resulting in an extended excitonic lifetime and enhanced solar cell performance. The stability of the new nanocrystals also improves owing to the effective protection...

Oral Insulin Delivery Platforms: Strategies To Address the Biological Barriers

Oral insulin delivery holds great promise as a convenient and economical means of diabetes treatment. This Minireview provides an overview of representative advances in facilitating oral insulin delivery by overcoming biological barriers, including strategies centered on moieties‐mediated transport, cell‐penetrating peptide assisted permeation, smart...

N‐Bridged Acyclic Trimeric Poly‐Cyclodiphosphazanes: Highly Tuneable Cyclodiphosphazane Building Blocks

We have synthesized a completely new family of acyclic trimeric cyclodiphosphazane compounds comprising NH, N i Pr, N t Bu and NPh bridging groups. These species possess both a highly tuneable intra‐terminal N(H)R moiety distance that can be readily modulated by varying the steric bulk of the bridging groups, in addition to topological flexibility...

Fragment‐Based Stabilizers of Protein–Protein Interactions through Imine‐Based Tethering

A novel concept for optimizing orthosteric protein–protein interaction (PPI) stabilization is reported. Increasing interactions with the protein partner that contributes less to the composite binding pocket of the stabilizer (NF‐κB, red surface) results in increased stabilization, whereas further enhancing the interaction with the dominant partner protein...

Direct Intermediate Regulation Enabled by Sulfur Containers in Working Lithium–Sulfur Batteries

Lithium polysulfide intermediates are directly regulated by the sulfur container PESn in working lithium sulfur batteries. Through reversible storage and release of the sulfur species, the container molecule converts small PSs into large organosulfur species, endowing changed electrochemical behaviors to lithium–sulfur batteries. Abstract Polysulfide...

Suppressing Strong Exciton–Phonon Coupling in Blue Perovskite Nanoplatelet Solids by Binary Systems

The effective suppression of exciton–phonon interactions of blue emissive CsPbBr3 nanoplatelets (NPLs) is realized by constructing binary NPL systems. The exciton–phonon coupling strength can be significantly reduced two times. Additionally, the energy transfer between binary NPLs originated from Förster resonance energy transfer (FRET) effect occurs...

A Mechanochemical Reaction Cascade for Controlling Load‐Strengthening of a Mechanochromic Polymer

A mechanochemical reaction cascade for controlling load‐strengthening of a mechanochromic polymer is realized by using two comb polymers, each containing either spirothiopyran or a Diels–Alder adduct in the proximity of the branch points. The threshold force to trigger crosslinking is increased by ca. 1 nN and the minimum concentration of mechanophores...

Electrochemically Induced Metal–Organic‐Framework‐Derived Amorphous V2O5 for Superior Rate Aqueous Zinc‐Ion Batteries

In situ electrochemical induction of crystalline V2O3‐containing MIL‐88B(V) and carbon material yields a composite termed a‐V2O5@C. The a‐V2O5@C composites displays appreciable electrochemical performance due to the unique amorphous structure of V2O5 and its composite state with carbon. Abstract The electrochemical performance of vanadium‐oxide‐based...

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