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Magnetic relaxation switching (MRS) sensors have shown great potential in food safety monitoring due to their high signal‐to‐noise ratio and simplicity, but they often suffer from insufficient sensitivity and stability due to the lack of excellent magnetic nanoprobes. Herein, dumbbell‐like Au–Fe3O4 nanoparticles are designed as magnetic nanoprobes for developing an aflatoxin B1‐MRS immunosensor. The...
Polysulfide shuttling and sluggish sulfur redox kinetics hinder the cyclability and rate capability of lithium–sulfur (Li–S) batteries. The intrinsic redox kinetics of sulfur cathodes strongly depends on the interaction between catalysts and sulfur species. Herein, N‐doped CoTe2 is proposed as an effective dual‐anchoring electrocatalyst, which can simultaneously bind Li and S atoms in lithium polysulfides...
The electro‐oxidation of methanol to formate is an interesting example of the potential use of renewable energies to add value to a biosourced chemical commodity. Additionally, methanol electro‐oxidation can replace the sluggish oxygen evolution reaction when coupled to hydrogen evolution or to the electroreduction of other biomass‐derived intermediates. But the cost‐effective realization of these...
In article number 2006623, Andreu Cabot, Chunhua Cui, and co‐workers present nickel iron diselenide nanorods, which are produced in solution and used electrocatalytically to convert methanol to formate at a high rate and with a Faradaic conversion efficiency of 99%. This work demonstrates the highly efficient and selective methanol‐to‐formate conversion on Ni‐based catalysts as a promising example...
The rational integration of chemotherapy and hydroxyl radical (·OH)‐mediated chemodynamic therapy (CDT) holds great potential for cancer treatment. Herein, a smart biocompatible nanocatalyst based on porous core–shell cuprous oxide nanocrystals (Cu2O‐PEG (polyethylene glycol) NCs) is reported for acid‐triggered chemo/chemodynamic synergistic therapy. The in situ formed high density of hydrophilic...
The current state of chemotherapy is far from satisfaction, restricted by the inefficient drug delivery and the off‐target toxicity. Prodrug nanoassemblies are emerging as efficient platforms for chemotherapy. Herein, three docetaxel dimeric prodrugs are designed using diselenide bond, disulfide bond, or dicarbide bond as linkages. Interestingly, diselenide bond‐bridged dimeric prodrug can self‐assemble...
High‐temperature ceramic/polymer nanocomposites with large energy density as the reinforcement exhibit great potential for energy storage applications in modern electronic and electrical power systems. Yet, a general drawback is that the increased dielectric constant is usually achieved at the cost of decreased breakdown strength, thus leading to moderate improvement of energy density and even displaying...
The fate of stem cells at the single cell level with limited communication with other cells is still unknown due to the lack of an efficient tool for highly accurate molecular detection. Moreover, the conditional sensitivity of biological experiments requires a sufficient number of parallel experiments to support a conclusion. In this work, a microfluidic single cell chip is designed for use with...
In article number 1905001, Lin Han, Hong Liu, Yuanhua Sang, and co‐workers design a microfluidic single cell chip with a protein chip to study the effect of hydroxyapatite (HAp) on the osteogenic differentiation of human adiposederived stem cells (hADSCs) in situ at the single cell level. The detection of secretory proteins confirms that HAp nanorods enhance osteogenic differentiation at the single...
Although transition metal dichalcogenides (TMDs) are attractive for the next‐generation nanoelectronic era due to their unique optoelectronic and electronic properties, carrier scattering during the transmission of electronic devices, and the distinct contact barrier between the metal and the semiconductors, which is caused by inevitable defects in TMDs, remain formidable challenges. To address these...
In article number 1901791, Lin Han, Hong Liu, Lin Gu, and co‐workers present a facile and effective defects‐patching approach via nitrogen plasma doping for inevitable vacancies in transition metal dichalcogenides, which opens up new opportunities for the use of high‐performance 2D devices in practical electronic applications. In the cover, the five‐color stone in the hands of Nuwa refers to the nitrogen...
All‐inorganic cesium lead halide perovskite nanocrystals (NCs) have demonstrated excellent optical properties and an encouraging potential for optoelectronic applications; however, mixed‐halide perovskites, especially CsPb(Cl/Br)3 NCs, still show lower photoluminescence quantum yields (PL QY) than the corresponding single‐halide materials. Herein, anhydrous oxalic acid is used to post‐treat CsPb(Cl/Br)...
Ambipolar organic field‐effect transistors (OFETs) are vital for the construction of high‐performance all‐organic digital circuits. The bilayer p–n junction structure, which is composed of separate layers of p‐ and n‐type organic semiconductors, is considered a promising way to realize well‐balanced ambipolar charge transport. However, this approach suffers from severely reduced mobility due to the...
In article number 1901582, Xiangyu Jiang, Xiaoshi Qian, Yunhe Zhang, and co‐workers fabricate a series of bioinspired nanocomposites by designing multiple interfacial interactions between the wide‐gap artificial nanosheets and high glass transition temperature (Tg) polymer matrix. Nanoconfinement effect is utilized in the nanocomposites for enhanced electric energy‐storage properties.
Polymer dielectrics are ubiquitous in advanced electric energy storage systems. However, the relatively low operating temperature significantly menaces their widespread application at high temperatures, such as for hybrid vehicles and aerospace power electronics. Spider silk, a natural nanocomposite comprised of biopolymer chains and crystal protein nanosheets combined by multiple interfacial interactions,...
Interfaces in semiconductor heterostructures is of continuously greater significance in the trend of scaling materials down to the atomic limit. Since atoms tend to behave more irregularly around interfaces than in internal materials, accurate energy band alignment becomes a major challenge, which determines the ultimate performance of devices. Therefore, a comprehensive understanding of the interplay...
Cancer cells are susceptible to oxidative stress; therefore, selective elevation of intracellular reactive oxygen species (ROS) is considered as an effective antitumor treatment. Here, a liposomal formulation of dichloroacetic acid (DCA) and metal–organic framework (MOF)‐Fe2+ (MD@Lip) has been developed, which can efficiently stimulate ROS‐mediated cancer cell apoptosis in vitro and in vivo. MD@Lip...
Using interfacial reaction systems for biphasic catalytic reactions is attracting more and more attention due to their simple reaction process and low environmental pollution. Yolk–shell structured materials have broad applications in biomedicine, catalysis, and environmental remediation owing to their open channels and large space for guest molecules. Conventional methods to obtain yolk–shell mesoporous...
Stirring small volumes of solution can reduce immunoassay readout time, homogenize cell cultures, and increase enzyme reactivity in bioreactors. However, at present many small scale stirring methods require external actuation, which can be cumbersome. To address this, here, reactive inkjet printing is shown to be able to produce autonomously rotating biocompatible silk‐based microstirrers that can...
Current nanoparticle (NP) drug carriers mostly depend on the enhanced permeability and retention (EPR) effect for selective drug delivery to solid tumors. However, in the absence of a persistent EPR effect, the peritumoral endothelium can function as an access barrier to tumors and negatively affect the effectiveness of NPs. In recognition of the peritumoral endothelium as a potential barrier in drug...
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