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A major issue with Fenton‐like reaction is the excessive consumption of H2O2 caused by the sluggish regeneration rate of low‐valent metal, and how to improve the activation efficiency of H2O2 has become a key in current research. Herein, a nano‐heterostructure catalyst (1.0‐MnCu/C) based on nano‐interface engineering is constructed by supporting Cu and MnO on carbon skeleton, and its kinetic rate...
Polymer Field‐Effect Transistors
In article number 2306010, Jian Pei and co‐workers demonstrate ideal and environmentally stable charge transport in n‐type polymer field‐effect transistors. The fabricated transistors exhibit high electron mobility and near 100% reliability factors and remain robust after being stored in air for more than 300 days and immersed in water or acetone.
Realizing ideal charge transport in field‐effect transistors (FETs) of conjugated polymers is crucial for evaluating device performance, such as carrier mobility and practical applications of conjugated polymers. However, the current FETs using conjugated polymers as the active layers generally show certain non‐ideal transport characteristics and poor stability. Here, ideal charge transport of n‐type...
Chemodynamic therapy (CDT) is a highly targeted approach to treat cancer since it converts hydrogen peroxide into harmful hydroxyl radicals (OH·) through Fenton or Fenton‐like reactions. However, the systemic toxicity of metal‐based CDT agents has limited their clinical applications. Herein, a metal‐free CDT agent: 2,4,6‐tri(4‐pyridyl)‐1,3,5‐triazine (TPT)/ [closo‐B12H12]2−(TPT@ B12H12) is reported...
There is an urgent demand of ultrathin high‐performance microwave absorbing materials (MAMs) in the electromagnetic protection field. However, minimizing thickness is challenging mainly due to dielectric mismatch at high permittivity from excessive dielectric loss, leading to strong reflection at 2–18 GHz. Here, a hybrid TaS2/Co(Cp)2 superlattice is fabricated with alternating [TaS2] inorganic layers...
Coordination Polymers
In article number 2302492, Fa‐Kun Zheng, Guo‐Cong Guo, and co‐workers first reveal a coordination polymers (CPs)‐based direct X‐ray detector with anisotropic charge transport from the perspective of structural chemistry. This study provides beneficial guidance and deep insight for designing high‐performance CPs‐based X‐ray detectors.
Anisotropic charge transport plays a pivotal role in clarifying the conductivity mechanism in direct X‐ray detection to improve the detection sensitivity. However, the anisotropic photoelectric effect of semiconductive single crystal responsive to X‐ray is still lacking of theoretical and experimental proof. The semiconductive coordination polymers (CPs) with designable structures, adjustable functions,...
Aqueous Zinc Batteries
In article number 2301770, Yueliang Gu, Xiaochuan Ren, Daming Zhu, Jianxin Zou, and co‐workers elucidate the reaction mechanism of Mn2+ electrolyte additives in aqueous zinc batteries (ZIBs) via operando synchrotron X‐ray diffraction, ex situ X‐ray absorption spectroscopy and electrochemical analyses. A reversible Mn2+/MnO2 deposition/dissolution reaction occurred at the cathode,...
Aqueous zinc batteries (ZIBs) have attracted considerable attention in recent years because of their high safety and eco‐friendly features. Numerous studies have shown that adding Mn2+ salts to ZnSO4 electrolytes enhanced overall energy densities and extended the cycling life of Zn/MnO2 batteries. It is commonly believed that Mn2+ additives in the electrolyte inhibit the dissolution of MnO2 cathode...
Overexpressed matrix metalloproteinases, hypoxia microenvironment, and metabolic abnormality are important pathological signs of rheumatoid arthritis (RA). Designing a delivery carrier according to the pathological characteristics of RA that can control drug release in response to disease severity may be a promising treatment strategy. Psoralen is the main active ingredient isolated from Psoralea corylifolia...
Many different types of inorganic materials are processed into nano/microparticles for medical utilization. The impact of selected key characteristics of these particles, including size, shape, and surface chemistries, on biological systems, is frequently studied in clinical contexts. However, one of the most important basic characteristics of these particles, their density, is yet to be investigated...
Rechargeable Magnesium Batteries
In article number 2202250, Hong‐Yi Li, Xie Zhang, and co‐workers reveal the function of Mg2+ as a key to unlock the nano‐highways for Mg2+ diffusion in lamellar‐structured Cu3V2O7(OH)2·2H2O (CVOH). The Mg2+ self‐induced diffusion highways enable high specific capacity, excellent rate capability, and cycling stability of CVOH as a cathode for rechargeable magnesium...
Rechargeable magnesium batteries (RMBs) suffer from low capacity and poor cyclability of cathode materials, which is due to the sluggish Mg2+ diffusion kinetics and large lattice strain. Here, a layer‐interweaving mechanism in lamellar cathode to simultaneously facilitate Mg2+ diffusion and release Mg2+‐insertion strain is reported. In the Cu3V2O7(OH)2·2H2O (CVOH) cathode, Mg2+ diffusion highways...
SARS‐CoV‐2 Testing
In article number 2107832, Leonidas Bleris, Zhenpeng Qin, and co‐workers develop a plasmonic sensing method for loop‐mediated isothermal amplification (plasmonic LAMP). It turns complex amplicons into short single‐strand DNA for sequence‐specific detection with plasmonic nanoprobes, achieving improved detection sensitivity and specificity.
The ability to detect pathogens specifically and sensitively is critical to combat infectious diseases outbreaks and pandemics. Colorimetric assays involving loop‐mediated isothermal amplification (LAMP) provide simple readouts yet suffer from the intrinsic non‐template amplification. Herein, a highly specific and sensitive assay relying on plasmonic sensing of LAMP amplicons via DNA hybridization,...
Designing cost‐effective, highly active, and durable platinum (Pt)‐based electrocatalysts is a crucial endeavor in electrochemical hydrogen evolution reaction (HER). Herein, the low‐content Pt (0.8 wt%)/tungsten oxide/reduced graphene oxide aerogel (LPWGA) electrocatalyst with excellent HER activity and durability is developed by employing a tungsten oxide/reduced graphene oxide aerogel (WGA) obtained...
Biologically plausible computing systems require fine‐grain tuning of analog synaptic characteristics. In this study, lithium‐doped silicate resistive random access memory with a titanium nitride (TiN) electrode mimicking biological synapses is demonstrated. Biological plausibility of this RRAM device is thought to occur due to the low ionization energy of lithium ions, which enables controllable...
Aerogels are unique solid‐state materials composed of interconnected 3D solid networks and a large number of air‐filled pores. They extend the structural characteristics as well as physicochemical properties of nanoscale building blocks to macroscale, and integrate typical characteristics of aerogels, such as high porosity, large surface area, and low density, with specific properties of the various...
Flexibility plays a vital role in wearable electronics. Repeated bending often leads to the dramatic decrease of conductivity because of the numerous microcracks formed in the metal coating layer, which is undesirable for flexible conductors. Herein, conductive textile‐based tactile sensors and metal‐coated polyurethane sponge‐based bending sensors with superior flexibility for monitoring human touch...
In article number 1902440, Xuqing Liu and co‐workers explore the relationship between flexibility and conductivity of metal‐coated flexible substrates by introducing the Kelvin question and bubble foams. Such a theoretical model is a rationale to explain the honeycomb‐like structure of deposited metallic cells and the size of metal aggregates in different layers. Based on the Kelvin structure model,...
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