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Waste Heat Harvesting
In article number 2304308, Weitao Jiang and co‐workers arranged thermal diode‐pairs with fractal structures and dual‐direction thermal regulation ability in opposite directions to construct artificial hot‐ or cold‐zones. Thermoelectric‐legs as battery units and stacked parallel on diodes exhibit enhanced power‐supply capability with unprecedented long‐duration (more than hours),...
Thermal energy harvesting provides an opportunity for multi‐node systems to achieve self‐power autonomy. Thermoelectric generators (TEGs), either by thermocouple arrangement with higher‐aspect‐ratios or thermoelectric films overlay, are limited by the small temperature difference and its short‐duration (less than dozens of minutes), hindering the harvesting efficiency. Here, by introducing thermal...
Artificial photosynthesis can convert carbon dioxide into high value‐added chemicals. However, due to the poor charge separation efficiency and CO2 activation ability, the conversion efficiency of photocatalytic CO2 reduction is greatly restricted. Ultrathin 2D photocatalyst emerges as an alternative to realize the higher CO2 reduction performance. In this review, the basic principle of CO2 photoreduction...
2D Ruddlesden–Popper (RP) perovskites have been intensively investigated due to their superior stability and outstanding optoelectrical properties. However, investigations on 2D RP perovskites are mainly focused on A‐site substituted perovskites and few reports are on X‐site substituted perovskites especially in X‐ray detection field. Here, X‐site substituted 2D RP perovskite Cs2Pb(SCN)2Br2 polycrystalline...
The spontaneous organization of two types of nanoparticles (NPs) with different shapes or properties into binary nanoparticle superlattices (BNSLs) with different configurations has recently attracted significant attention due to the coupling or synergistic effect of the two types of NPs, providing an efficient and general route for designing new functional materials and devices. Here, this work reports...
The exposure of MoS2 nanosheets can cause cytotoxicity, which causes health risks and affects its medical applications. However, knowledge of the underlying molecular mechanisms remains limited. This study reports that MoS2 nanosheets induces ferroptosis in vivo and in vitro, which is caused by the nanosheet themselves rather than by the dissolved ions. MoS2 nanosheets induce ferroptosis in epithelial...
2D MoS2 Nanosheets
MoS2 nanosheets accumulate Fe2+ in lysosomes by promoting NCOA4‐dependent ferritinophagy. Fe2+ leaks from the damaged lysosomes into the cytoplasm, resulting in ferroptosis. This has important implications for elucidating the toxicity of 2D nanoparticles and determining their medical applications. More details can be found in article number 2208063 by Wei Jiang and co‐workers.
Based on a kinetic model involving oxidant diffusion and an oxidation‐reduction reaction, a 3‐parameter equation is derived relating the change in the concentration of thermally induced carrier donors in common metal‐oxide semiconductors (such as indium–gallium–zinc oxide and indium–tin–zinc oxide) to heat‐treatment time. The change in the concentration of such donors is characterized by measuring...
Metal‐Oxide Semiconductors
In article number 2203346, Zhihe Xia, Man Wong, and co‐workers propose a 3‐parameter equation based on a kinetic model involving oxidant diffusion and an oxidation‐reduction reaction of intrinsic donor defects. It is shown to be applicable to common metal‐oxide semiconductors and is deployed to the characterization of donor defects.
Microbial infections and microbial resistance lead to a high demand for new antimicrobial agents. Quaternized polysaccharides are cationic antimicrobial candidates; however, the limitation of homogeneous synthesis solvents that affect the molecular structure and biological activities, as well as their drug resistance remains unclear. Therefore, the authors homogeneously synthesize a series of quaternized...
Antibiotic Resistance
In article number 2104885, Runhui Liu, Wei Jiang, Jie Cai, and co‐workers construct quaternized polysaccharide‐based cationic micelles with outstanding biocompatibility, excellent broad‐spectrum antimicrobial ability and low propensity for resistance, effective inhibition and eradication of mature bacterial biofilms, and that accelerate MRSA‐infected biofilms wound healing, which...
Molecular carbon imides, especially extended perylene diimides (PDIs) have been the best wide‐band‐gap nonfullerene acceptors. Despite their excellent photothermal/chemical stability, flexible reaction sites, and unique photoelectronic properties, there is still a lack of fundamental understanding of their molecular characteristics as a third component. Here, generations of PDIs with distinctive molecular...
Liver fibrosis is the leading risk factor for hepatocellular carcinoma. Both oxidative stress and inflammation promote the progression of liver fibrosis, but existing therapeutic strategies tend to focus solely on one issue. Additionally, targeting of pathological microstructures is often neglected. Herein, an esterase‐responsive carbon quantum dot‐dexamethasone (CD‐Dex) is developed for liver fibrosis...
The hyperactive energy metabolism mostly contributes the tumor cells growth and proliferation. Herein, the intelligent nanoparticles (P‐B‐D NPs) obtained by loading BAY‐876 and doxorubicin (Dox)‐Duplex into nanoparticles composed of disulfide bond (SS) containing polymer are reported, which provide an efficient resistance of tumor cells energy metabolism and tumor growth to conquer malignant tumor...
The inherent features of covalent organic frameworks (COFs) make them highly attractive for uranium recovery applications. A key aspect yet to be explored is how to improve the selectivity and efficiency of COFs for recovering uranium from seawater. To achieve this goal, a series of robust and hydrophilic benzoxazole‐based COFs is developed (denoted as Tp‐DBD, Bd‐DBD, and Hb‐DBD) as efficient adsorbents...
MoS2, one of the most valued 2D materials beyond graphene, shows potential for future applications in postsilicon digital electronics and optoelectronics. However, achieving hole transport in MoS2, which is dominated by electron transport, is always a challenge. Here, MoS2 transistors gated by electrolyte gel exhibit the characteristics of hole and electron transport, a high on/off ratio over 105,...
Phototherapy as a promising cancer diagnostic and therapeutic strategy has aroused extensive attention. However, single‐wavelength near‐infrared (NIR) light–triggered combinational treatment of photothermal therapy (PTT) and photodynamic therapy (PDT) is still a great challenge. Herein, a multifunctional micelle activated by a single‐wavelength laser for simultaneous PTT and PDT as well as fluorescence...
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