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2D materials with atomic‐scale thickness and mechanical robustness are required for flexible devices. The superior optoelectronic properties and high‐Z atoms in metal halide perovskites render them desirable for X‐ray detection, but the intrinsic brittleness is an obstacle hampering the applications in flexible detectors. Herein, an interfacial engineering strategy is demonstrated for the epitaxial...
Alkaline metal‐ion batteries (AIBs) such as lithium‐ion batteries (LIBs), sodium‐ion batteries (NIBs), and potassium‐ion batteries (KIBs) are potential energy storage systems. Currently, although LIBs are widely used in consumer electronics and electric vehicles, the electrochemical performance, safety, and cost of current AIBs are still unable to meet the needs for many future applications, such...
Although constructing heterostructures is considered as one of the most successful strategies to improve the activity of a catalyst, the heterostructures usually suffer from the cumbersome preparation treatments and low‐yield. Inspired by a solid‐phase solution‐precipitation (SPSP) process, an approach for interface intensive heterostructures with high yield is developed. Herein, a black‐phosphorus/iron‐tetraphosphide...
Heterostructures
In article number 2203284, Xue Zhang, Jiahong Wang, and co‐workers report a unique solid‐phase synthesis strategy named the “solid‐phase solution‐precipitation method” to fabricate an inorganic Fe‐P heterostructure. Owing to the unique Fe‐P bonds, excellent nitrogen reduction reaction activity is observed. The solid‐chemical strategy provides insights into the design and fabrication...
The development of advanced electronic devices is boosting many aspects of modern technology and industry. The ever‐increasing demand for advanced electrical devices and integrated circuits calls for the design of novel materials, with superior properties for the improvement of working performance. In this review, a detailed overview of the synthesis strategies of 2D metal organic frameworks (MOFs)...
Carbon nitride consisting of the broken π‐conjugated structure (bc‐CN) is designed as the emitting layer in a blue‐violet light emitting diode (LED). The bc‐CN is prepared by a metal‐oxide (MgO) template‐assisted method, in which the low reaction temperature and nano MgO jointly control the degree of polymerization to form cyano groups and broken π‐conjugation in the bc‐CN nanosheets (bc‐CN NS) which...
Light‐Emitting Diodes
In article number 2202969, Xue‐Feng Yu, Jiahong Wang, Baomin Xu, and co‐workers report a carbon nitride synthesized by nano‐template assisted polymerization method. Since the broken π‐conjugated structure leads to the excellent dispersibility and luminescence efficiency of the carbon nitride dots, a bright blue‐violet electroluminescence light‐emitting diode is further established...
Titanium Diselenide Nanosheets
In article number 2103239, Xianming Li, Zhenyou Jiang, Zhengbo Sun, and co‐workers synthesize a novel nanosheets (TiSe2) with high photothermal conversion efficiency and good biocompatibility. TiSe2 nanosheets could achieve high temperatures, with heat improving their catalytic ability to further amplify oxidative stress to efficiently kill cancer cells upon NIR laser...
Nanomaterial‐based photothermal and photocatalytic therapies are effective against various types of cancers. However, combining two or more materials is considered necessary to achieve the synergistic anticancer effects of photothermal and photocatalytic therapy, which made the preparation process complicated. Herein, the authors describe simple 2D titanium diselenide (TiSe2) nanosheets (NSs) that...
The excessive reactive oxygen species (ROS) and hypoxia deteriorate the inflammation‐related diseases such as myocardial infarction (MI), and thereby deter the normal tissue repair and recovery and further lead to severe fibrosis and malfunction of tissues and organs. In particular, the MI has become one of the leading causes of death nowadays. In this study, a novel type of injectable hydrogel with...
2D silicon nanosheets (SiNSs) are promising materials for biomedicine but facile synthesis of SiNSs remains a challenge. Herein, by means of a sulfur‐iodine co‐assisted chemical vapor transport method, octahedron silicon (oct‐Si) crystals with fully exposed {111} planes are prepared as precursors for efficient synthesis of SiNSs by facet‐selective exfoliation. The 13 nm thick SiNSs have good biocompatibility...
As new 2D layered nanomaterials, Bi2O2Se nanoplates have unique semiconducting properties that can benefit biomedical applications. Herein, a facile top‐down approach for the synthesis of Bi2O2Se quantum dots (QDs) in a solution is described. The Bi2O2Se QDs with a size of 3.8 nm and thickness of 1.9 nm exhibit a high photothermal conversion coefficient of 35.7% and good photothermal stability. In...
Two‐dimensional Bi2O2Se quantum dots (QDs) are synthesized by a facile top‐down approach in article number 1905208 by Yue Chen, Zhenyou Jiang, Jundong Shao, an co‐workers. Boasting large photothermal conversion efficiency and excellent photoacoustic performance as well as suitable biodegradability, the Bi2O2Se QDs facilitate photoacoustic imaging of whole tumors in photothermal cancer therapy. The...
Memristors are emerging as a rising star of new computing and information storage techniques. However, the practical applications are severely challenged by their instability toward harsh conditions, including high moisture, high temperatures, fire, ionizing irradiation, and mechanical bending. In this work, for the first time, lead‐free double perovskite Cs2AgBiBr6 is utilized for environmentally...
Conjugated coordination polymers have become an emerging category of redox‐active materials. Although recent studies heavily focus on the tailoring of metal centers in the complexes to achieve stable electrochemical performance, the effect on different substitutions of the bridging bonds has rarely been studied. An innovative tailoring strategy is presented toward the enhancement of the capacity storage...
Nitrogen dioxide (NO2) emission has severe impact on human health and the ecological environment and effective monitoring of NO2 requires the detection limit (limit of detection) of several parts‐per‐billion (ppb). All organic semiconductor‐based NO2 sensors fail to reach such a level. In this work, using an ion‐in‐conjugation inspired‐polymer (poly(3,3′‐diaminobenzidine‐squarine, noted as PDBS) as...
To address demands for increased data transmission rates, electrically small antennas (ESAs) that simultaneously offer large frequency bandwidths and small physical sizes are of growing interest. 3D layouts are particularly important in this context and among various 3D ESAs, systems that adopt hemispherical shapes are very promising, because they can occupy the entire Chu‐sphere and offer outstanding...
Precise, quantitative measurements of the thermal properties of human skin can yield insights into thermoregulatory function, hydration, blood perfusion, wound healing, and other parameters of clinical interest. The need for wired power supply systems and data communication hardware limits, however, practical applicability of existing devices designed for measurements of this type. Here, a set of...
In article number 1803192, Philipp Gutruf, John A. Rogers, and co‐workers present a soft, miniaturized, battery‐free, near‐field communication‐based sensor that measures the temperature and thermal transport properties of the skin. The wireless epidermal device yields continuous data streams over extended periods of wear with measurements of skin hydration, blood perfusion, and rates of healing after...
Black phosphorus (BP) possesses unique physical properties and, owing to its intrinsic instability, the proper surface and chemical coordination is the key point in many applications. Herein, a facile and efficient surface lanthanide‐coordination strategy based on lanthanide (Ln) sulfonate complexes is designed to passivate and functionalize different BP‐based nanostructures including quantum dots,...
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