Angewandte Chemie International Edition

Cover image for Vol. 55 Issue 27

Editor: Peter Gölitz, Deputy Editors: Neville Compton, Haymo Ross

Online ISSN: 1521-3773

Associated Title(s): Angewandte Chemie, Chemistry - A European Journal, Chemistry – An Asian Journal, ChemistryOpen, ChemPlusChem, Zeitschrift für Chemie

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The following papers are very important in the opinion of two referees.

You are invited to comment on published VIPs. Please use the link given at the end of each such abstract. Scientific comments may be forwarded to the authors by the editorial office and may be posted on this page. Kindly let us know if your comments are for the editorial office only, the author, or the public as well.

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Light-Driven Electron Accumulation in a Molecular Pentad

Light-Driven Electron Accumulation in a Molecular Pentad

No sacrifice at all: Long-lived (τ=870 ns) electron accumulation has been achieved in a molecular pentad without the use of sacrificial reagents. This is an important proof-of-concept for solar-energy conversion and multi-electron photoredox chemistry.

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Leader Peptide-Free In Vitro Reconstitution of Microviridin Biosynthesis Enables Design of Synthetic Protease-Targeted Libraries

Leader Peptide-Free In Vitro Reconstitution of Microviridin Biosynthesis Enables Design of Synthetic Protease-Targeted Libraries

Natural products: A chemo-enzymatic one-pot synthesis approach was developed for tricyclic microviridins comprising lactone as well as lactam rings. The method was used to design and screen protease-targeted libraries derived from short synthetic oligopeptides.

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Excavated Cubic Platinum–Tin Alloy Nanocrystals Constructed from Ultrathin Nanosheets with Enhanced Electrocatalytic Activity

Excavated Cubic Platinum–Tin Alloy Nanocrystals Constructed from Ultrathin Nanosheets with Enhanced Electrocatalytic Activity

Excavated cubic Pt–Sn alloy nanocrystals with {110} facets were constructed by the assembly of ultrathin nanosheets by co-reduction in the presence of a surfactant. These nanocrystals have a very high surface area and displayed superior electrocatalytic activity towards methanol oxidation.

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Boosting Photocatalytic Hydrogen Production of a Metal–Organic Framework Decorated with Platinum Nanoparticles: The Platinum Location Matters

Boosting Photocatalytic Hydrogen Production of a Metal–Organic Framework Decorated with Platinum Nanoparticles: The Platinum Location Matters

Location, location, location: Platinum nanoparticles (PtNPs) are incorporated inside or supported on a metal–organic framework (MOF), UiO-66-NH2, giving Pt@UiO-66-NH2 and Pt/UiO-66-NH2, respectively. Having the Pt NPs inside the MOF greatly shortens the electron–transport distance, which favors the electron–hole separation and thereby yields the highest photocatalytic efficiency for H2 production.

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Fast-Geomimicking using Chemistry in Supercritical Water

Fast-Geomimicking using Chemistry in Supercritical Water

Small talc: The supercritical hydrothermal flow synthesis is a new method to produce model nanominerals, such as nano-talc, in just a few tens of seconds. As well as having different spectroscopic signals to natural talc, the nano-talc has new properties, such as its hydrophilic character, making it the first fluid talc filler for new applications.

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Integrin-Targeting Knottin Peptide–Drug Conjugates Are Potent Inhibitors of Tumor Cell Proliferation

Integrin-Targeting Knottin Peptide–Drug Conjugates Are Potent Inhibitors of Tumor Cell Proliferation

Tied up in knottins: Tumor-targeted knottin peptide-drug conjugates (KDC) are significantly smaller than antibody–drug conjugates, allowing for facile synthesis and conjugation. A KDC bearing the nucleoside gemcitabine is internalized by an integrin-mediated mechanism, releases its payload intracellularly, and is shown to be a highly potent inhibitor of several malignant cell lines.

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Thermoset Shape-Memory Polyurethane with Intrinsic Plasticity Enabled by Transcarbamoylation

Thermoset Shape-Memory Polyurethane with Intrinsic Plasticity Enabled by Transcarbamoylation

Thermoset polymers are known for their superior thermomechanical properties, but the chemical crosslinking typically leads to intractability. However, a classical thermoset shape-memory polyurethane was now shown to be readily capable of permanent reshaping (plasticity) after a topological network rearrangement that is induced by transcarbamoylation.

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Hydrogen Treatment for Superparamagnetic VO2 Nanowires with Large Room-Temperature Magnetoresistance

Hydrogen Treatment for Superparamagnetic VO2 Nanowires with Large Room-Temperature Magnetoresistance

Spin regulation: The spin structure of the one-dimensional V–V atomic chains in monoclinic VO2 nanowires was modified by hydrogen treatment, which introduced V3+ ions into the 1D zigzag V–V chains, triggering the formation of ferromagnetically coupled V3+–V4+ dimers. The new structure consists of 1D superparamagnetic chains and shows large negative magnetoresistance at room temperature.

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Rapid Synthesis of Cobalt Nitride Nanowires: Highly Efficient and Low-Cost Catalysts for Oxygen Evolution

Rapid Synthesis of Cobalt Nitride Nanowires: Highly Efficient and Low-Cost Catalysts for Oxygen Evolution

Down to the wire: CoN nanowire arrays were synthesized by means of a fast and efficient N2 plasma method which is both safe and environmental friendly. Owing to the better conductivity and large surface area, the obtained CoN nanowire arrays on nickel foam exhibit outstanding performance in the oxygen evolution reaction.

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Elucidation of the Covalent and Tertiary Structures of Biologically Active Ts3 Toxin

Elucidation of the Covalent and Tertiary Structures of Biologically Active Ts3 Toxin

Sting in the tail: Total chemical synthesis and structure–activity studies were used to elucidate the covalent structure of biologically active Ts3, a protein toxin from the venom of the Brazilian scorpion Tityus serrulatus. Racemic protein crystallography was then used to determine the structure of the folded Ts3 protein by X-ray diffraction.

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Super-heptazethrene

Super-heptazethrene

Expanding horizons: The complex polycyclic hydrocarbon super-heptazethrene was synthesized using a strategy involving a selective multiple intramolecular Friedel–Crafts alkylation followed by oxidative dehydrogenation. Super-heptazethrene displayed a much larger diradical character (y0) than heptazethrene.

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Modulation of the E. coli rpoH Temperature Sensor with Triptycene-Based Small Molecules

Modulation of the E. coli rpoH Temperature Sensor with Triptycene-Based Small Molecules

In E. coli, the heat shock response is regulated by an alternative σ factor, σ32, which is encoded by the rpoH gene. This σ32 mRNA temperature sensor can be modulated with triptycenes to thermally control gene expression.

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Stable Aqueous Photoelectrochemical CO2 Reduction by a Cu2O Dark Cathode with Improved Selectivity for Carbonaceous Products

Stable Aqueous Photoelectrochemical CO2 Reduction by a Cu2O Dark Cathode with Improved Selectivity for Carbonaceous Products

Copper on the dark side: Cu2O preferentially reduced CO2 to fuels while suppressing hydrogen evolution. It was found that the photogenerated holes primarily account for the instability of Cu2O. The Cu2O was used as a dark cathode to minimize the adverse effects of holes, achieving excellent stability and a selectivity of 92.6 % for carbonaceous products in CO2 photoreduction.

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Chemical-Bonding-Directed Hierarchical Assembly of Nanoribbon-Shaped Nanocomposites of Gold Nanorods and Poly(3-hexylthiophene)

Chemical-Bonding-Directed Hierarchical Assembly of Nanoribbon-Shaped Nanocomposites of Gold Nanorods and Poly(3-hexylthiophene)

Turning fibers into ribbons: Nanoribbon-shaped nanocomposites composed of a conjugated polymer, poly(3-hexylthiophene) (P3HT), and plasmonic gold nanorods (AuNRs) are produced by a co-assembly of thiol-terminated P3HT nanofibers with dodecanethiol-coated AuNRs. Owing to plasmon coupling between adjacent aligned AuNRs these nanocomposites show broadened and red-shifted absorption bands.

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