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Carrier interactions in 2D nanostructures are of central importance not only in condensed‐matter physics but also for a wide range of optoelectronic and photonic applications. Here, new insights into the behavior of photoinduced carriers in layered platinum diselenide (PtSe2) through ultrafast time‐resolved pump–probe and nonlinear optical measurements are presented. The measurements reveal the temporal...
In article number 1902431, Xiangcun Li and co‐workers prepare a Pt@Ni core–shell bimetallic catalyst based on a confined catalysis reaction in porous carbon spheres. The synergic effect facilitates catalytic oxidation of insoluble polysulfides to soluble polysulfides. Electronic migration from Ni to Pt becomes a driving force for Ni activating Li2S molecules by promoting the transformation of Li‐S‐Li...
Defined hierarchical materials promise cell analysis and call for application‐driven design in practical use. The further issue is to develop advanced materials and devices for efficient label‐free cell capture with minimum instrumentation. Herein, the design of hierarchical beads is reported for efficient label‐free cell capture. Silica nanoparticles (size of ≈15 nm) are coated onto silica spheres...
Sodium‐ion capacitors (SICs) have attracted enormous attention due to their high energy density and high power density. In this work, N and S codoped hollow carbon nanobelts (N/S‐HCNs) are synthesized by a self‐templated method. The as‐synthesized carbon nanobelts exhibit excellent performance in pseudocapacitance and electric double layer anions adsorption. After pairing the N/S‐HCNs cathode with...
In article number 1901286, Zhenglong Zhang, Hairong Zheng, and co‐workers develop a strategy to realize an easy and rapid in‐situ crystal transformation by plasmon‐induced thermal and catalysis effects, which is applicable even at low temperature. Such a scheme not only solves the bottleneck of the conventional approach of single crystal nanomaterial formation, but also extends the application of...
In article number 1902441, Kun Qian and co‐workers design hierarchical beads for label‐free cell capture. Silica nanoparticles are coated on silica spheres for surface roughness and then combined with microbeads to assemble hierarchical structures. Functionalized by hyaluronic acid, the hierarchical beads display desirable structural parameters with high cell capture efficiency.
In article number 1900510, Yoram Cohen and co‐workers develop a Bayesian networks (BNs) tool to explore the cellular toxicity of cadmium‐containing quantum dots (QDs) utilizing data from 515 publications from research groups across different continents. The impact of various QD properties on cellular toxicity is elucidated along with mapping of data patterns in terms of association rules.
Converting solar energy into chemical fuels is increasingly receiving a great deal of attention. In this work, CdS nanoparticles (NPs) are solvothermally anchored onto graphene nanoribbons (GNRs) that are longitudinally unzipped from multiwalled carbon nanotubes. The as‐synthesized CdS/GNR nanocomposites with recyclability present GNR content‐dependent activity in visible‐light‐driven hydrogen evolution...
It has been thought that water is detrimental to perovskites, causing degeneration due to their ionic structures. In article number 1901994, Wen Li, Wei Yan, Weiqing Yang, and co‐workers unexpectedly find that 3D all‐inorganic perovskites are exfoliated by water molecules and transformed into more intrinsic stable quasi‐2D nanosheets in complete water conditions instead of leading to decomposition...
For over a hundred years, X‐rays have been a main component of the radiotherapeutic approaches to treat cancer. Yet, to date, no radiosensitizer has been developed to selectively target prostate cancer. Gold has excellent X‐ray absorptivity and is used as a radiotherapy enhancing material. In this work, ultrasmall Au25 nanoclusters (NCs) are developed for selective prostate cancer targeting, radiotherapy...
Single crystal nanomaterials are very important for the fundamental investigation and application of luminescence. However, a very critical growth condition or high temperature treatment is always required for their preparation. Here, an easy and rapid in situ achievement of a single crystal luminescent material is realized by taking advantage of plasmon‐induced thermal and catalysis effects. With...
Untethered small‐scale robots have great potential for biomedical applications. However, critical barriers to effective translation of these miniaturized machines into clinical practice exist. High resolution tracking and imaging in vivo is one of the barriers that limit the use of micro‐ and nanorobots in clinical applications. Here, the inclusion of radioactive compounds in soft thermoresponsive...
Schiff‐base networks (SBNs), as typical examples of nitrogen‐doped microporous organic polymers (MOPs), exhibit promising application prospects owing to their stable properties and tunable chemical structures. However, their band structure engineering, which plays a key role in optical properties, remains elusive due to the complicated mechanisms behind energy level adjustment. In this work, a series...
A web‐based resource for meta‐analysis of nanomaterials toxicity is developed whereby the utility of Bayesian networks (BNs) is illustrated for exploring the cellular toxicity of Cd‐containing quantum dots (QDs). BN models are developed based on a dataset compiled from 517 publications comprising 3028 cell viability data samples and 837 IC50 values. BN QD toxicity (BN‐QDTox) models are developed using...
The catalytic properties of nanometals are strongly dependent on their electronic states which, are influenced by the interaction with the supports. However, a precise manipulation of the electronic interaction is lacking, and the nature of the interaction is still ambiguous. Herein, using Au/ZnFexCo2−xO4 (x = 0–2) as a model system with continuously tuned Fermi levels of supports, the electronic...
Incapability of effective cross‐talk with biological environments has partly impaired the in vivo functionality of nanoparticles (NPs). Homing, biodistribution, and function of NPs could be engineered through regulating their interactions with in vivo niches. Inspired by communications in biological systems, endowing a “biological identity” to synthetic NPs is one approach to control their biodistribution,...
All‐inorganic cesium lead halide perovskite nanocrystals (NCs) have emerged as attractive optoelectronic materials due to the excellent optical and electronic properties. However, their environmental stability, especially in the presence of water, is still a significant challenge for their further commercialization. Here, ultrahigh intrinsically water‐stable all‐inorganic quasi‐2D CsPbBr3 nanosheets...
Flexible planar micro‐supercapacitors (MSCs) with unique loose and porous nanofiber‐like electrode structures are fabricated by combining electrochemical deposition with inkjet printing. Benefiting from the resulting porous nanofiber‐like structures, the areal capacitance of the inkjet‐printed flexible planar MSCs is obviously enhanced to 46.6 mF cm−2, which is among the highest values ever reported...
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)...
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