Porphyrin-Based Metal-Organic Frameworks for PD-L1 Detection via "Coordination Disaggregation-Induced Enhancement" Strategy.

Porphyrins, known for their exceptional photoelectrochemical properties and high luminescence, are promising candidates for electrochemiluminescence (ECL) applications. However, their tendency to aggregate in aqueous solutions due to π-π stacking leads to luminescence quenching and reduced efficiency. To address this, we developed a "coordination disaggregation-induced enhancement" strategy, utilizing metal-organic frameworks (MOFs) as stable platforms for immobilizing porphyrin.

Tandem Synergistic Catalysis on Cu-Pd/BiTiO Nanorods Promoting Highly Selective Photoconversion of CO to Ethyl Alcohol.

The production of high-energy-density liquid fuels through the photoconversion of CO offers a highly efficient method for storing sustainable solar energy for future use. BiTiO (BTO) nanorods loaded with Cu-Pd nanoalloys were designed for the highly selective photoreduction of CO to ethyl alcohol, using HO as the proton source. A tandem synergistic catalysis mechanism was proposed for this CO photoconversion process.

Modulation Engineering of Graphitic/Pyrrolic Nitrogen Co-Doped Porous Carbon-Based Electrocatalysts with Abundant Active Sites for Efficient CO2 Reduction.

Developing metal-free catalysts is critical to addressing the issues of susceptibility to poisoning and deficient durability in the electrocatalysis of metal-based materials for CO2 reduction reaction (CO2RR). Herein, N-doped carbon nanoparticles (NCs) with a specific ratio of graphitic/pyrrolic N, high specific surface area, and abundant nanopores are synthesized by pyrolyzing a Cu and Zn co-coordinated polymer with bis(imino)-pyridine ligands. Results demonstrate that precise co-incorporation of Cu and Zn in the precursor effectively modulates the N doping species and ratios of NCs, as well as the pore structure, resulting in significantly distinct CO2RR behaviors.

Unusual chaetoglobosins and a new type of ferroptosis inducer from an endophytic fungus Chaetomium sp. UJN-EF006.

Seven unreported chaetoglobosin-type alkaloids, namely brachaetoglobosin A (1), chaetochalasins BF (2-6) and armochaeglobine C (7), together with the formerly described cytoglobosin C (8) and chaetoglobosin E (9), were obtained from an endophytic fungus Chaetomium sp. UJN-EF006 isolated from the leaves of Vaccinium bracteatum. Their structures were characterized through various spectral techniques including MS, NMR, X-ray crystallography and electronic circular dichroism.

Transition metal doped pyrazine-graphyne for high-performance CO reduction reaction to C1 products.

The pressing necessity to mitigate climate change and transition to a sustainable energy economy underscores the importance of developing highly efficient and selective catalysts for electrocatalytic CO reduction (CORR). This study explores nitrogen-doped graphyne (N-GY) as a promising substrate for anchoring 3d and 4d transition metal atoms (TMs), facilitating the creation of high-performance electrocatalysts. Through comprehensive computational analysis based on density functional theory (DFT), we provide a detailed understanding of the mechanisms involved in CO capture by these catalysts.

Polysaccharide-based high barrier food packaging film: design and application.

In the process of storage and processing, food will be affected by the external environment and reduce its quality, such as light, water, oxygen, microorganisms, etc. Barrier packaging is needed to shield the adverse effects of the external environment. Polysaccharide macromolecules are rich in active sites, which gives them designable properties, and therefore have been widely studied by researchers in the field of barrier packaging films.

Compatibilization of poly(lactic acid) and poly(butylene adipate-co-butylene terephthalate) blends by using epoxidized magnesium hydroxide nanoparticles.

Poly(lactic acid) (PLA)/poly(butylene adipate-co-terephthalate) (PBAT) blends have been widely developed due to their excellent biodegradability and complementary mechanical properties. However, PLA/PBAT blends are still facing the limitations of their poor compatibility and flammability. To address these challenges facilely, a family of functional compatibilizers was fabricated using epoxy-modified magnesium hydroxide (MH).

Solid-state tailored silver nanocomposites from chitosan: Synthesis, antimicrobial evaluation and molecular docking.

This study thoroughly explores the synthesis, characterization, and antimicrobial efficacy of three α-aminophosphonate-chitosan (α-AP-Cs) compounds and their nano‑silver functionalized organic hybrids. α-AP-Cs derivatives (CU, CT and CSC) were synthesized via an in-situ, one-pot reaction using chitosan and triphenyl-phosphite, with different carbamide-glutaraldehyde crosslinkers; urea-glutaraldehyde, thiourea-glutaraldehyde and semicarbazide-glutaraldehyde, respectively. Subsequently, their corresponding α-AP-Cs‑silver nanocomposites (CU-AgNPs, CT-AgNPs and CSC-AgNPs) were synthesized via solid-state approach.

Ultrasound-assisted preparation of shikonin-loaded emulsions for the treatment of bacterial infections.

Bacteria can encapsulate themselves in a self-generated matrix of hydrated extracellular polymeric substances such as polysaccharides, proteins, and nucleic acids, thereby forming bacterial biofilm infections. These biofilms are drug resistant and will diminish the efficacy of antimicrobial agents, rendering treatment of such infections challenging. Herein, an innovative strategy is proposed to synergistically degrade bacterial biofilms and eradicate the entrapped bacteria through integrating α-amylase (α-Amy), shikonin (SK) and epigallocatechin gallate (EGCG) within an emulsion.

High-frequency ultrasound induced the preparation of oxidized low density lipoprotein.

Foam cells have been frequently used in studies related to atherosclerosis. Traditional methods for inducing oxidized low-density lipoprotein (oxLDL) involve copper ion (Cu) treatment, which has inherent limitations such as prolonged oxidation times and residual copper ions. This study explored high-frequency ultrasound (400 kHz) as an alternative method for LDL oxidization.

Laser-induced PdCu alloy catalysts for highly efficient and stable electrocatalytic nitrate reduction to ammonia.

The electrochemical reduction reaction of nitrate (NORR) to ammonia is an environmentally friendly approach that can treat wastewater as well as find an alternative to the energy-intensive Haber-Bosch process. The use of adhesives partially to adhere to the NORR electrocatalysts, leading to sluggish kinetics, poor stability and poor scalability. Herein, we report the synthesis of PdCu alloy catalysts via a direct laser writing method, demonstrating their exceptional performance in the electrochemical reduction of nitrate.

MgH-modified Ni catalysts with electron transfer behavior for improving CO methanation.

The activation of CO plays a crucial role in the process of CO methanation. It is important to raise the electron density of the active site to facilitate electron transfer to CO. However, the modulation of Ni catalytic activity by direct mixing of metal hydrides has received limited attention.

Precise synthesis of hollow IrCu alloy nanoparticles for hydrogenation of substituted nitroaromatics.

Hollow structured nanoparticles exhibit unique capabilities for catalytic applications; however, the accurate synthesis of these particles and a comprehensive understanding of the relationships between their structure and performance remain considerable challenges. In this work, hollow IrCu alloy nanoparticles were synthesized through chemical reduction and electrochemical post-leaching processes. The carbon-supported IrCu bimetallic nanoparticles were then evaluated for hydrogenation of various nitroaromatics.

Formamide-assisted synthesis of phosphate-intercalated Ni(OH)/NiOOH electrode for boosting oxygen evolution reaction.

Electrochemical water splitting (EWS) represents a promising method for green hydrogen production. However, the commercial viability of this approach is significantly hindered by the sluggish kinetics of the oxygen evolution reaction (OER). Layered Ni(OH)/NiOOH serves as a low-cost and effective OER electrocatalyst, yet the activity and stability do not meet the requirements for commercial EWS, particularly in terms of operational stability under high current densities.

Benzo-α-pyrone-derived multitargeting actions to enhance the antibacterial performance of sulfanilamides against Escherichia coli.

A novel class of benzopyrone-sulfanilamide hybrids was synthesized from phenols via multi-step reactions. Some prepared compounds effectively suppressed bacterial growth at low concentrations, and especially, sulfanilamide-hybridized 2-methyl-5-nitroimidazolyl benzopyrone 11c exhibited significant inhibitory potency against Escherichia coli (MIC = 0.0022 mM), which was 11-fold more active than clinical norfloxacin.

Berberrubine as a novel TrxR inhibitor enhances cisplatin sensitivity in the treatment of non-small cell lung cancer.

Thioredoxin reductase (TrxR, TXNRD) is an essential enzyme implicated in the processes of cancer development and progression, positioning it as a promising target for cancer therapeutics. In this study, we employed target-based structural screening to identify berberrubine (BRB), a natural product characterized by an unprecedented isoquinoline scaffold that differs from known TrxR inhibitors. Our findings demonstrate that BRB serves as an effective inhibitor of TrxR, both in the context of the purified enzyme and within cancer cells.

A high-performance photonic-ionic E-skin with synergistic electronic/optical sensing for motion tracking.

The integration of visualization and electrical feedback in biomimetic electronic skin (E-skin) for real-time motion tracking has attracted significant attention in wearable electronics. To facilitate human-readable interactive feedback and improve the overall performance of E-skin, particularly regarding mechanical compliance, sensitivity, and stability, we propose a novel high-performance photonic-ionic skin (PI-skin) based on mechanochromic photonic ionogel. The PI-skin, prepared by incorporating aligned magnetic colloids into an ionogel matrix, integrates interactive structural coloration and electrical responses to external stimuli, achieving dual-mode precise motion recognition.

DNA hairpin dimer-mediated dual-catalysis circuit for efficient and amplifiable electrochemical biosensing.

Exploring a variable catalytic hairpin assembly to amplify specific input might be intriguing for electrochemically detecting short-stranded DNA segment related to U. virens (iDNA). Herein, we proposed the first concept of hairpin dimer-mediated Dual-Catalysis Circuit (hdDCC) for creating rapid and efficient electrochemical biosensor.

Bifunctional chitosan/tannin aerogel for gold recovery via electrostatic attraction and in-situ reduction.

Enhancing gold recovery from wastewater significantly boosts resource efficiency and safeguards the environment. Addressing this need, we have proposed a straightforward and efficient one-step approach utilizing a multifunctional cellulose/chitosan/tannin aerogel (CCTG) to recover Au (III) through a combined adsorption-reduction mechanism. Under optimal conditions of pH 3 and 35 °C, our CCTG demonstrates a remarkable maximum adsorption capacity of 1761.

A Real-Time Cell Death Self-Reporting Theranostic Agent for Dynamic Optimization of Photodynamic Therapy.

The therapeutic efficiency of photodynamic therapy (PDT) hinges on the drug-light interval (DLI), yet conventional approaches relying on photosensitizer accumulation often lead to suboptimal irradiation and adverse side effects. Here, a real-time cell death self-reporting photodynamic theranostic nanoagent (CDPN) is presented that dynamically monitors extracellular potassium ion ([K⁺]) fluctuations as direct indicators of tumor cell death. By exploiting [K⁺] dyshomeostasis associated with apoptosis and necrosis, CDPN combines a photosensitizer and a potassium-sensitive fluorophore within mesoporous silica nanoparticles, encapsulated by a K⁺-selective membrane for enhanced specificity.

Glycosylated Phosphorous Corrole as effective Photosensitizers for Cancer Photodynamic Therapy via Enhancing cellular Uptake.

Developing effective photosensitizers (PSs) is the most important for cancer photodynamic therapy (PDT) treatment. Phosphrous corrole complex is a kind of promising photosensitizer. Herein, we report the synthesis and anticancer activity of a novel glycosylated phosphorous(V) corrole PS 5,15-bis(pentafuorophenyl)-10-(4-glycosyl phenyl) corrole phosphorous complex (2-P) which was prepared from the glycosylation of phosphorous 5,15-bis(pentafuorophenyl)-10-(4-oxhydryl phenyl) corrole (1-P).

Microenvironment-responsive NIR-IIb multifunctional nanozyme platform for bacterial imaging and specialized anti-anaerobic bacteria periodontal therapy.

Periodontitis is a chronic inflammatory disease caused by plaque. In order to remove pathogens and promote tissue repair, the following steps need to be taken simultaneously: localizing the diseased area, improving the anaerobic microenvironment, as well as addressing the anti-inflammatory and osteogenic needs. This study aims to address these issues by developing a responsive near-infrared-IIb nanozyme system (DMUP), assembled from lanthanide-doped down-converted nanoparticles and multi-enzymatically active nanozyme.

Lighting up metal nanoclusters by the HO-dictated electron relaxation dynamics.

The modulation of traps has found attractive attention to optimize the performance of luminescent materials, while the understanding of trap-involved photoluminescence management of metal nanoclusters greatly lags behind, thus extensively impeding their increasing acceptance as the promising chromophores. Here, we report an efficient passivation of the structural oxygen vacancies in AuAg nanoclusters by leveraging the HO molecules, achieving a sensitive color tuning from 536 to 480 nm and remarkably boosting photoluminescence quantum yield from 5.3% (trap-state emission) to 91.

Thermo-responsive jamming by particle shape change.

Granular materials transition between unjammed (deformable) and jammed (rigid) states when adjusting their packing density. Here, we report on experiments demonstrating that the same kind of phase transition can be alternatively achieved through temperature-controlled particle shape change. Using a confined system of randomly-packed rod-like particles made of shape memory alloy (SMA), we exploit that shape recovery of these bent rods with rising temperature at a constant packing density leads to a jammed state.

Quasi Fe MIL-53 nanozyme inducing ferroptosis and immunogenic cell death for cancer immunotherapy.

Nanozymes offer diverse therapeutic potentials for cancer treatment which is dependent on the development of nanomaterials. Quasi-metal-organic framework is a class of metal-organic framework-derived nanomaterials with a transition state from metal-organic frameworks towards metal oxide featuring porous structure and high activity. Herein an iron-based quasi-metal-organic framework nanozyme Q-MIL-53(Fe) is reported via a controlled deligandation strategy, exhibiting enhanced peroxidase-/catalase-mimic activity and glutathione depletion capacity, whose underlying mechanisms are studied via density functional theory calculations.