Synthesis of normal and mesoionic N-heterocyclic carbene Pd(II) complexes in near quantitative yields from the corresponding NHC precursor salts under base free and ambient conditions is reported. A plausible mechanism involving charge-assisted hydrogen bonded intermediates is proposed.
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http://dx.doi.org/10.1039/c4dt01112k | DOI Listing |
Health Phys
January 2025
Sublight Engineering PLLC, Arlington, VA.
This study investigated the implementation and impact of fifth-generation (5G) wireless millimeter wave (mmW) technology. 5G offers significant advancements over previous generations and supports additional frequency bands, including mmW, to enhance mobile broadband with ultra-reliable, low-latency communications, supporting a high volume of diverse communications. This technology is expected to enable billions of new connections in the Internet of Things (IoT), fostering innovations in various sectors including healthcare, manufacturing, and education.
View Article and Find Full Text PDFBiological soil crusts (or biocrust) are diminutive soil communities with ecological functions disproportionate to their size. These communities are composed of lichens, bryophytes, cyanobacteria, fungi, liverworts, and other microorganisms. Creating stabilizing matrices, these microorganisms interact with soil surface minerals thereby enhancing soil quality by redistributing nutrients and reducing erosion by containment of soil particles.
View Article and Find Full Text PDFEClinicalMedicine
January 2025
WEISS Centre, University College London, UK.
Background: The COVID-19 pandemic highlighted the need for improved infectious aerosol concentrations through interventions that reduce the transmission of airborne infections. The aims of this review were to map the existing literature on interventions used to improve infectious aerosol concentrations in hospitals and understand challenges in their implementation.
Methods: We reviewed peer-reviewed articles identified on three databases, MEDLINE, Web of Science, and the Cochrane Library from inception to July 2024.
J Phys Chem Lett
January 2025
State Key Laboratory of Reliability and Intelligence of Electrical Equipment, School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300401, China.
A significant barrier to the commercialization of solution-processed perovskite solar cells (PSCs) is the chemical instability of the components in precursor solutions under ambient conditions. This instability leads to solution aging, which subsequently diminishes the quality and reproducibility of the resulting PSCs. Inspired by recent published works, which focused on the deprotonation of organic cations, the oxidation of iodide, and the formation of undesired byproducts, we here systematically summarize and provide an outlook on the research directions and perspectives of the origin of precursor solution aging and countermeasures, such as using stabilizing additives, redox shuttles, Schiff base reactions, and green solvents.
View Article and Find Full Text PDFSmall
January 2025
School of Materials and Chemical Engineering, Chuzhou University, Chuzhou, 239000, China.
Effectual CH reclamation from CH/N blends by existing physisorbents in industrialization confronts the adversity of frustrated separation performance, weak structural strength, and restricted scale-up preparation. To solve aforesaid bottlenecks, herein, a strategy is presented to fabricate synergistic strong recognition binding sites in a robust and scalable optimum Cu(pma) with ultramicroporous feature regarding superb CH separation versus N. By virtue of the synergistic contribution of multiple affinities accompanied by enormous potential field overlap of pore restriction, it imparts strong recognition binding toward CH molecules.
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