化学/材料, 热门类期刊, -365足球

in this issue of chem, sun and co-workers report the synthesis of pt–ru–co triple-atom catalysts immobilized on n-doped carbon nanotubes via atomic layer deposition. these asymmetric triple-atom sites exhibit high electrocatalytic activity for the hydrogen evolution and oxidation reactions as a result of the optimized electronic structure of the d orbitals.

adenosine is a key regulator of the immunosuppressive tumor microenvironment. in the august issue of cell biomaterials, chen et al. introduce a synergistic tumor immunotherapy: magnetothermal immunotherapy. using external magnetic control, this approach enhances immune activation by promoting atp release while preventing its conversion to immunosuppressive adenosine. this synergistic nanotherapy offers

the programmable design and synthesis of topologically complex architectures through rational ligand engineering open new avenues for exploring the effects and potential applications of entanglements across chemistry, physics, and biology. in this issue of chem, fujita, sawada, and co-workers extend the folding-and-assembly approach to construct an m60l60-entangled capsid featuring 60 crossings.

we report that mechanochemistry enables the synthesis of new -conjugated covalent organic frameworks (cofs) based on naphthotetrathiophenetetracarbaldehydes 2ttn and 3ttn, expanding the scope of cof structures with two new isomeric tetradentate nodes. while recent studies have explored cof isomerism by varying bidentate linkers to tune electronic properties, the impact of node isomerism remains largely

polycyclic aromatic hydrocarbons (pahs) were employed as anchoring tags to noncovalently immobilize lewis acids onto single-walled carbon nanotubes (swnts). this heterogeneous system demonstrated remarkable performance in asymmetric catalysis, particularly in water devoid of organic solvents or surfactants, outperforming other carbonaceous π-materials in activity, stereoselectivity, and reusability

accurate prediction of enzyme function, particularly for newly discovered uncharacterized sequences, is immensely important for modern biology research. recently machine learning (ml) based methods have shown promises. however, such tools often suffer from complexity in feature extraction, interpretability, and generalization ability. in this study, we construct the dataset for enzyme functions and

the synthesis of enantioenriched aziridines is important for drug development due to their prevalence in bioactive molecules. previous methods often use expensive catalysts, activated substrates, or show poor stereoselectivity. herein, we report a novel organocatalytic approach using enantioenriched [2.2]paracyclophane (pcp)-based sulfenate anion catalysts, enabling the synthesis of 18 cyclopropanated

we report the synthesis and characterisation of a series of fluorogenic pt(iv) complexes - carboblue, oxaliblue and cisblue. these pt(iv) complexes were identified as photoactive, oxidising biomolecules under light irradation to then undergo rapid intramolecular photoreduction to release the fluorescent reporter, nap-oh and corresponding pt(ii) species. oxaliblue and cisblue displayed cytotoxicity

the reversible covalent bond formation that underpins dynamic covalent chemistry (dcc) enables the construction of stimuli-responsive systems and the efficient assembly of complex architectures. while most dcc studies have focused on systems at thermodynamic equilibrium, there is growing interest in systems that operate away from equilibrium—either by shifting to a new free-energy landscape in response

to overcome the persistent challenges of sluggish lithium polysulfide (lips) conversion kinetics and the shuttle effect in li–s batteries, this work introduces a novel, cost-effective thermal treatment strategy for synthesizing high-entropy metal phosphide catalysts using cation-bonded phosphate resins. for the first time, we successfully fabricated single-phase high-entropy fe0.20co0.62ni0.14cu0.23mn0

by connecting laboratory kinetics with cosmic observables, this work highlights the critical role of reactions between highly reactive species in shaping the molecular inventory of the interstellar medium and opens new windows into the spectroscopically elusive corners of astrochemical complexity. the gas phase formation of distinct c5h2 isomers is explored through the bimolecular reaction of tricarbon

enhancing drug efficacy often involves increasing the proportion of sp³-hybridized carbons. three-dimensional polycyclic frameworks, such as bicyclo[1.1.1]pentanes (bcps) and bicyclo[2.1.1]hexanes (bchs), serve as excellent benzene bioisosteres, improving bioavailability and reducing toxicity while retaining biological activity. however, synthetic routes to 2d/3d-ring-fused bchs via dearomatization

renewable energy sources are being adopted more widely around the world. this is due to the increasing energy demand, and by the fact that countries have set targets to reduce carbon emissions and solar and wind energy are intermittent by nature. this means that reliable, large-scale storage solutions are needed urgently. redox flow batteries (rfbs) are proving to be leading candidates in this field

the photocatalytic stereoselective trifluoromethylselenolation of e-arylalkenyl iodides with [me4n][secf3] is described under different conditions. these reactions enabled the first controllable synthesis of arylalkenyl trifluoromethyl selenoethers in good yields and with high e- or z-selectivity.

herein, 1,3,5-benzenetricarboxylate (btc) intercalation and oxygen vacancy engineering is proposed to enhance the electrochemical performance of layered double hydroxides (ldhs) nanosheets. the optimized ldh exhibits a remarkable capacity of 426 mah g⁻¹ at 3 a g⁻¹ and 70% capacity retention after 15,000 cycles, attributed to improved ion transport, abundant active sites, and structural stability.

the stability of zn metal anodes in aqueous electrolytes is fundamentally limited by undesired side reactions, including hydrogen evolution and zn corrosion, driven by unstable interfacial water. while ionic liquids (ils) have been explored to construct water-lean interfacial layers, most strategies center on cation interactions, leaving the synergetic role of anions largely overlooked. in this study

a rapid mechanochemical approach was developed to covalently graft an isothiocyanate dye onto an amino-functionalized metal-organic framework (mof), enabling visible-light-driven hydrogen production via dye sensitization. this method offers a greener and more efficient alternative to conventional solution-based dye-labeling techniques, that typically requires excessive solvents and elevated temperature

we report here a one-pot iodonium-claisen rearrangement of aryl iodanes with acetonitrile which enables ortho-cyanomethylation of aryl iodanes to produce valuable arylacetonitriles. the reaction proceeds through in situ preparation of (trimethylsilyl) acetonitrile by treating the readily available solvent mecn with tmsotf and dipea, followed by its interaction with aryl iodanes. notably, the sequential

ce-doped cobalt boride (ce-cob) was synthesized via a zif-67-derived boridation strategy, where ce incorporation synergistically tunes the electronic structure to accelerate oxygen evolution kinetics. the ce-cob achieves an overpotential of 320 mv at 10 ma cm-2, outperforming benchmark cob by 15.8 % (vs. 350 mv) with remarkable robust. these attributes position ce-cob as a scalable, high-efficiency

through molecular dynamics simulations of imidazolium-based ionic liquid–water mixtures, it was found that the trace water leads to an anomalous non-monotonic change in the diffusion coefficients of ionic liquid, characterized by an initial decrease followed by an increase. hydrogen bond analysis revealed that this unusual trend is governed by the weighted hydrogen bond lifetime, reflecting the stability

unprotected glycosyl sulfinates undergo ni-mediated cross coupling with a range of aryl iodides and bromides under photoredox conditions to yield aryl c-glycosides, predominantly as the β-anomers. thioglycoside formation is occasionally observed as a competitive side reaction. c-glycosides1 have long been proposed as potentially useful mimetics of naturally occurring o-glycosides that are resistant

andrew robinson reviews five of the best science picks.

carmen garcía-chávez monitors the activities of wolves after their reintroduction to chihuahua, northern mexico.

application volume is outpacing available funding, intensifying competition and worsening pressure on the peer-review system. but those who win grants are now getting more.

australia’s online safety amendment act provides the chance for researchers to analyse the complex relationship between social-media use and mental health in adolescents, but results should be interpreted with caution.

a july ruling from the international court of justice is clear: nations can face consequences if they don’t act on the climate crisis.

photography is not just illustrative, it is investigative. a revealing book cautions us to look closely at what pictures are really telling us.

lager drinkers fall into two distinct categories: those who prefer strong flavour chemicals and those who prefer mellow ones. plus, a deep-sea worm that produces a pigment favoured by rembrandt and the evidence around chemical exposure from beauty products.