Novel parallel passage adsorption system allows the electrochemical toggling of CO2 affinity for highly selective efficient carbon capture.

The portable electrochemical generation of hydrogen peroxide (H 2 O 2) from air and water would enable greater utilization of this versatile green oxidant in applications ranging from environmental remediation to portable sanitation. Currently, electrochemical H 2 O 2 synthesis is hampered by the lack of lowcost, non-toxic catalysts that selectively reduce O 2 to H 2 O 2 and the lack of low-energy methods for separating the produced H 2 O 2 from the electrolyte media. Herein, we show that a disulfonated anthraquinone can simultaneously catalyze the selective conversion of O 2 to H 2 O 2 and shuttle between immiscible aqueous and organic phases via ion exchange. We exploit both of these properties in a flow system to assemble an all-Earth-abundant prototype device for the continuous generation and separation of H 2 O 2 into an electrolyte-free water stream. The combination of molecular redox mediation and phase-transfer catalysis demonstrated here has broad implications for the electrochemical synthesis and isolation of value-added chemicals and fuels.

The long‐range organization of a liquid crystal can be controlled by using an additive that consists of cholesterol units attached to a hydrazone switch. The acid/base‐induced rotary motion in the switch is transmitted to the self‐assembled supramolecular host, wherein this information is propagated and amplified. This process alters the photophysical properties of the host, which results in the change of the readout color from purple to green.

Antibiotic-resistant bacteria infect close to 3 million people, and kill 35,000, each year in the United States. Ionic liquid (IL)-based antimicrobial agents have the potential to diversify our ever-diminishing antibiotic arsenal. Here, we describe an IL with potent submicromolar antimicrobial activity in vitro against clinically relevant Gram-negative and Gram-positive bacterial pathogens as well as antiinfective activity in a mouse model. The IL kills pathogenic bacteria such as Acinetobacter baumannii, Salmonella enterica, and Escherichia coli by disrupting their outer membrane and does not select for bacterial resistance. We show incorporation of our IL into surface coatings to generate a type of antibiofilm material. The IL-loaded ionogel surfaces demonstrate high-antimicrobial and antifouling activity by killing bacteria in both static and dynamic tests. Our IL-based antibiofilm surfaces are low-cost and easy to manufacture, can be formed on glass, latex, plastic, and metal surfaces, such as catheters and other medical devices where high local concentrations of antimicrobials are needed, and may have applications in other clinical and industrial settings.