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The low photoluminescence (PL) efficiency and unstable features of small blue‐emitting CsPbX3 nanocrystals (NCs) greatly limit their applications in optoelectronics field. Herein, the synergistic and post‐treatment kinetics are studied to create highly bright and anomalous stable violet (peak position of ≈408 nm) and blue (peak position of ∼ 466 nm) emitting perovskite NCs. Ligand and ion exchange...
The use of bacteria and their biotic components as therapeutics has shown great potential in the treatment of diseases. Orally delivered bacteria improve patient compliance compared with injection‐administered bacteria and are considered the preferred mode. However, due to the harsh gastrointestinal environment, the viability and therapeutic efficacy of orally delivered bacteria are significantly...
Potassium‐ion battery represents a promising alternative of conventional lithium‐ion batteries in sustainable and grid‐scale energy storage. Among various anode materials, elemental phosphorus (P) has been actively pursued owing to the ideal natural abundance, theoretical capacity, and electrode potential. However, the sluggish redox kinetics of elemental P has hindered fast and deep potassiation...
The rational design of lightweight, broad‐band, and high‐performance microwave absorbers is urgently required for addressing electromagnetic pollution issue. Metal single atoms (M–SAs) absorbers receive considerable interest in the field of microwave absorption due to the unique electronic structures of M–SAs. However, the simultaneous engineering of the morphology and electronic structure of M–SAs...
Solid electrolyte interphase (SEI) plays an important role in regulating the interfacial ion transfer and safety of Lithium‐ion batteries (LIBs). It is unstable and readily decomposed releasing much heat and gases and thus triggering thermal runaway. Herein, in situ heating X‐ray photoelectron spectroscopy is applied to uncover the inherent thermal decomposition process of the SEI. The evolution of...
Hydrogen Evolution Reaction
In article number 2207146, Rui Gao, Chuan Shi, and co‐workers present Pt atoms to redisperse on α‐MoC1−x substrate from carbon nanotubes, which creates dual active interfaces of Pt species dispersed over carbon nanotubes and α‐MoC1−x. Benefiting from the strong electronic interaction between the Pt atom and α‐MoC1−x, the utilization efficiency of the Pt atom is evidently...
Developing high‐performance electrocatalysts toward hydrogen evolution reaction (HER) is important for clean and sustainable hydrogen energy, yet still challenging. Herein, an α‐MoC1 ‐ x induced redispersing strategy to construct a superior HER electrocatalyst (Pt/CNTs‐N + α‐MoC1 ‐ x) by mechanical mixing of α‐MoC1 ‐ x with Pt/CNTs‐N followed by thermal reduction is reported. It is found that thermo‐activation...
As a gaseous second messenger, nitric oxide (NO) plays an important role in a series of signal pathways. Research on the NO regulation for various disease treatments has aroused wide concern. However, the lack of accurate, controllable, and persistent release of NO has significantly limited the application of NO therapy. Profiting from the booming development of advanced nanotechnology, a mass of...
Cell‐Free Therapies
hBMMSC‐apoVs can promote mesenchymal stem cell (MSC) osteogenesis and inhibit osteoclast formation in vitro and in vivo. The mechanisms include the release of miR1324, which inhibits the expression of the target gene SNX14, thereby activating the SMAD1/5 pathway in target cells. In article number 2205813, Xiao Zhang, Yunsong Liu, and co‐workers suggest a therapeutic strategy for...
Mesenchymal stem cells (MSCs) are widely used in the treatment of diseases. After their in vivo application, MSCs undergo apoptosis and release apoptotic vesicles (apoVs). This study investigates the role of apoVs derived from human bone marrow mesenchymal stem cells (hBMMSCs) in bone metabolism and the molecular mechanism of the observed effects. The results show that apoVs can promote osteogenesis...
Hollow carbon spheres are potential candidates for lightweight microwave absorbers. However, the skin effect of pure carbon‐based materials frequently induces a terrible impedance mismatching issue. Herein, small‐sized NiO/Ni particles with heterojunctions on the N‐doped hollow carbon spheres (NHCS@NiO/Ni) are constructed using SiO2 as a sacrificing template. The fabricated NHCS@NiO/Ni displayed excellent...
Calcium‐based batteries have promising advantages over multivalent ion batteries. However, the fabrication of highly efficient calcium batteries is limited by the quality of available cathode materials, which motivates the exploration of electrodes that can enable reversible, stable Ca2+ intercalation. Herein, layered vanadium oxide MgxV2O5·nH2O is used as a calcium battery cathode, and it exhibits...
Cancer Diagnostics
In article number 2200784, Kun Qian, Jiayi Wang, and co‐workers develop a versatile electrochemical biosensing system for circulating miRNA detection by DNAzyme cleavage cycling amplification and hybridization chain reaction amplification. By profiling miRNA in a non‐small‐cell lung cancer cohort, this designed liquid biopsy strategy shows high efficiency and sensitivity for early...
Circulating microRNAs (miRNAs) can be used as noninvasive biomarkers and are also found circulating in body fluids such as blood. Dysregulated miRNA expression is associated with many diseases, including non‐small cell lung cancer (NSCLC), and the miRNA assay is helpful in cancer diagnosis, prognosis, and monitoring. In this work, a versatile electrochemical biosensing system is developed for miRNA...
Single atom sites (SAS) of FeN4 are clarified as one of the most active components for the oxygen reduction reaction (ORR). Effective strategies by engineering the local coordination environment and site density of FeN4 sites are crucial to further enhance the electrocatalytic ORR performance. Herein, the integration of a second metal of Mn with Fe to construct Fe&Mn/N‐C catalysts with enhanced...
Inspired by the action and healing process from living organisms, developing deployable devices using stimuli‐responsive materials, or “smart” deployable devices, is desired to realize remote‐controlled programmable deformation with additional in situ repair to perform multiple tasks while extending their service life in aerospace. In this work, a photoorganizable triple shape memory polymer (POTSMP)...
Antibacterial photocatalytic therapy (APCT) is considered to be a potential treatment for administrating antibiotic‐resistant bacteria. However, due to the low photocatalytic efficiency and weak ability to capture bacteria, it is not practically applied. In this work, an organic–metal oxide hybrid semiconductor heterostructure is fabricated for the photocatalytic generation of reactive oxygen species...
Ordered porous carbon materials (PCMs) have potential applications in various fields due to their low mass densities and porous features. However, it yet remains extremely challenging to construct PCMs with multifunctionalization for electromagnetic wave absorption. Herein, the honeycombed‐like carbon aerogels with embedded Co@C nanoparticles are fabricated by a directionally freeze‐casting and carbonization...
Carbon nitride (g‐C3N4) nanostructure rebuilding is an effective means to modify its photocatalytic properties, especially the hollow micron‐nanostructure. The increased scattering in the body effectively improves the light utilization efficiency and improves catalytic properties. In this work, fusiform‐shaped g‐C3N4 capsules are created by controlling the nucleation kinetics of supramolecular assemblies...
Bimodal imaging with fluorescence in the second near infrared window (NIR‐II) and positron emission tomography (PET) has important significance for tumor diagnosis and management because of complementary advantages. It remains challenging to develop NIR‐II/PET bimodal probes with high fluorescent brightness. Herein, bioinspired nanomaterials (melanin dot, mesoporous silica nanoparticle, and supported...
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