Electrocatalysts, particularly those for water oxidation, often experience substantial or at least partial reconstruction. Here, Wang et al. are able to control surface reconstruction using a cationic redox-tuning method on layered LiCoO2–xClx catalysts for the oxygen evolution reaction. The resulting optimized catalyst exhibits excellent electrocatalytic performance in alkaline electrolyte. Read more »
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Gas-phase synthesis of corannulene—a molecular building block of fullerenes
Fullerenes have been implicated to play a key role in the astrochemical evolution of the interstellar medium. However, the formation mechanism of even their simplest molecular building block—corannulene—has remained elusive. Here we demonstrate that corannulene can be synthesized in the gas phase through reactions mimicking conditions in carbon-rich circumstellar envelopes. Read more »
Additive Lithography–Organic Monolayer Patterning Coupled with an Area-Selective Deposition
This scene depicts the layer-by-layer growth of an inorganic film in a selected area. The alternation of a chemical agent (blue) deposits on a gray substrate to form an inorganic film. A cross-linked organic material (tan) locally inhibits this reaction and prevents film deposition. Furthermore, the pattern-wise cross-linking of this organic film enables nanoscale pattern generation. Read more »
Chiral Spin Textures in Amorphous Iron–Germanium Thick Films
Robert Streubel and co‐workers report the formation of topological magnetization vector fields in disordered materials with local inversion symmetry breaking, harnessing high‐resolution Lorentz microscopy, quantitative x‐ray microspectroscopy, and coherent scattering. The image shows the reconstructed in‐plane magnetic induction of closely packed Bloch skyrmions embedded into helical spins. Read more »
Functionalization of Benzotriazole-Based Conjugated Polymers for Solar Cells: Heteroatom vs Substituents
Understanding the structure-property relationship is important when designing new conjugated polymers for high-efficiency polymer solar cells. Rech et al. systematically explore the impact of a variety of functional groups, including nitrogen heteroatoms, fluorine substituents, and cyano groups. Read more »
Coordinated decline of leaf hydraulic and stomatal conductances under drought is not linked to leaf xylem embolism for different grapevine cultivars
Drought decreases water transport capacity of leaves and limits gas exchange, which involves reduced leaf hydraulic conductance (Kleaf) in both the xylem and outside-xylem pathways. We combined Kleaf and gas exchange measurements, micro-computed tomography of intact leaves, and spatially explicit modeling of the outside-xylem pathways to evaluate the role of vein embolism and Kleaf in the responses of two different grapevine cultivars to drought. Read more »
Extreme Low-Temperature Combustion Chemistry: Ozone-Initiated Oxidation of Methyl Hexanoate
The accelerating effect of ozone on the oxidation of methyl hexanoate was probed with time-of-flight mass spectrometry. A new oxidation regime was observed at temperatures below the well-known low-temperature chemistry regime. The results indicate that the chemistry in this regime is initiated by thermal ozone dissociation and subsequent H abstraction from methyl hexanoate by O atoms. Read more »
Evidence of a magnetic transition in atomically thin Cr2TiC2Tx MXene
2D magnetic materials have recently attracted significant interest as model systems to understand low-dimensional magnetism and for potential spintronic applications. Here, we report on synthesis of Cr2TiC2Tx MXene and a detailed study of its magnetic as well as electronic properties. Read more »
Domain-Swap Dimerization of Acanthamoeba castellanii CYP51 and a Unique Mechanism of Inactivation by Isavuconazole
We investigated the mechanism of action of antifungal drugs in the human pathogen Acanthamoeba castellanii. We discovered that the enzyme target formed a dimer via an N-termini swap, whereas drug-bound AcCYP51 was monomeric. Cover image shows a molecular model of the AcCYP51 dimer in a phospholipid bilayer. Read more »
Balanced Charge Transport Optimizes Industry‐Relevant Ternary Polymer Solar Cells
In this article, Szymanski et al. develop novel, cost‐effective ternary polymer solar cells printed in semi‐industrial conditions from a relatively benign ink, which do not require any further processing. These solar cells show good stability and efficiency due to balanced charge-carrier mobilities achieved by optimizing the composition and morphology. Read more »
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