Viologen-linked covalent organic frameworks: A charged and redox-active platform for functional materials
Peer-Reviewed Publication
Updates every hour. Last Updated: 24-Oct-2026 16:15 ET (24-Oct-2026 20:15 GMT/UTC)
Researchers from Shenzhen University and collaborating institutions have provided a comprehensive review of viologen-linked covalent organic frameworks (Vio-COFs) as an emerging class of charged and redox-active porous materials. With their unique combination of permanent positive charges, reversible viologen redox chemistry, and well-defined porous frameworks, Vio-COFs offer versatile platforms for modulating electron transfer, ion migration, and host–guest interactions. This review highlights recent developments in the design strategies, structural properties, and functional applications of Vio-COFs, emphasizing their potential in catalysis, energy conversion and storage, environmental remediation, and optoelectronics. Overall, the insights presented in this review pave the way for the rational design and engineering of next-generation multifunctional Vio-COF materials.
A company that helped design how astronauts grow and recycle food in space is now applying that thinking to the critical problem of dairy waste here on Earth. Take Root Bio worked with Heriot-Watt University to successfully turn salty whey, a high-volume by-product from cheese production, into a widely used fuel called bioethanol. Together, they looked at how the sugars found in salty whey could be transformed through a bio-based process, creating value from a material that is often difficult and costly to manage. The process also leaves behind a secondary stream that could potentially be recovered and reused.
Using seawater for large-scale electrolysis offers a highly promising route for sustainable energy systems, but aggressive chloride ions typically cause rapid degradation of conventional anodic catalysts. Researchers from Hainan University and Swinburne University of Technology have developed a self-stabilizing boron-doped high-entropy selenide for the anodic oxygen evolution reaction. By coupling dynamic valence oscillations for active-site protection with a robust selenate layer to repel chloride, this catalyst achieves over 1000 hours of continuous operation at industrial-level currents in a harsh seawater environment.
Researchers have developed an injectable supramolecular carrier that co‑encapsulates two hydrophobic anti‑inflammatory drugs within a hyaluronic acid matrix via Schiff‑base chemistry. The system achieves pH‑responsive release, suppresses inflammatory cytokines, promotes cartilage repair in a rat osteoarthritis model, and avoids the systemic toxicity of oral medications.
Researchers have developed an injectable supramolecular carrier that co‑encapsulates two hydrophobic anti‑inflammatory drugs within a hyaluronic acid matrix via Schiff‑base chemistry. The system achieves pH‑responsive release, suppresses inflammatory cytokines, promotes cartilage repair in a rat osteoarthritis model, and avoids the systemic toxicity of oral medications.
So far, quantum computers have been held back by their extreme sensitivity to errors and external disturbances. The longer a quantum operation takes, the greater the risk that computational errors will occur. Now, researchers at Chalmers University of Technology, in Sweden, have developed a new method that allows a wide range of advanced quantum operations to be carried out more than a thousand times faster. The breakthrough addresses a well-known bottleneck in the field and paves the way for fault-tolerant quantum computing.
Kinesin is a vital molecular motor that transports cargoes along microtubule tracks in the cell, but atomic structural dynamics of its guiding neck region have remained unresolved. Researchers performed massive all-atom molecular dynamics simulations on the supercomputer Fugaku to accurately model this neck region and observed its physical interactions with the microtubule surface. The study revealed that physical contact between the neck region and the track surface directs the motor to step forward with a counterclockwise bias, providing a structural foundation for understanding fundamental intracellular transport mechanics.