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Emergence of thermoresponsive and reversible color changes at low temperature is a challenging target. In general, it is not easy to induce sufficient dynamic motion of rigid molecules including chromophore at a lower temperature. The present work shows unusually low‐temperature color‐change properties originating from the dynamic motion of rigid conjugated polymer in solid state. The layered composites...
Organometallic and all‐inorganic halide perovskites (HPs) have recently emerged as promising candidate materials for resistive switching (RS) nonvolatile memory due to their current–voltage hysteresis caused by fast ion migration. Lead‐free and all‐inorganic HPs have been researched for non‐toxic and environmentally friendly RS memory devices. However, only HP‐based devices with electrochemically...
A versatile breast cancer‐targeting nanocomposite therapeutic combining docetaxel (DXL), polyvinyl alcohol (PVA) network for controlled release, and silica‐protected magnetic iron oxide nanoparticles (Fe3O4 NPs) for targeted delivery and gold nanoparticles (AuNPs) for plasmonic photothermal therapy (PPTT) is presented in this work. First, the designed nanocomposite is magnetically directed for cancer‐targeted...
Seeking potential electrocatalysts with both large‐scale application and robust activity for the oxygen evolution reaction allows for no delay. Herein, a squarate‐based metal–organic framework (MOF) ([Co3(C4O4)2(OH)2]⋅3H2O) is reported for electrocatalytic water oxidation. A facile, green, and low‐cost strategy is proposed to introduce defects by not only rationally breaking CoO bonds to form defective...
Thermal shift assays (TSAs) have been extensively used to study thermodynamics of proteins and provide an efficient means to assess protein–ligand binding or protein–protein interactions. However, existing TSAs have limitations, such as being time consuming, labor intensive, or having low sensitivity. Herein, an acousto thermal shift assay (ATSA), the first ultrasound enabled TSA, is reported for...
Due to the ultrathin thickness and dangling‐bond‐free surface, 2D materials have been regarded as promising candidates for future nanoelectronics. In recent years, group‐VI elemental 2D materials have been rediscovered and found superior in electrical properties (e.g., high carrier mobility, high photoconductivity, and thermoelectric response). The outstanding semiconducting properties of group‐VI...
Semiconductor quantum dots (QDs) are spotlighted as a key type of emissive material for the next generation of light‐emitting diodes (LEDs). This work presents the investigation of the electrochemical charging effect on the absorption and emission of the InP/ZnSe/ZnS QDs with different mid‐shell thicknesses. The excitonic peak is gradually bleached during electrochemical charging, which is caused...
The exploration of efficient electrocatalysts is the central issue for boosting the overall efficiency of water splitting. Herein, pertinently creating active sites and improving conductivity for metal–organic frameworks (MOFs) is proposed to tailor electrocatalytic properties for overall water splitting. An Ni(II)‐MOF nanosheet array is presented as an ideal material model and a facile alkali‐etched...
Sodium‐ion batteries (SIBs) have become increasingly important as next‐generation energy storage systems for application in large‐scale energy storage. It is very crucial to develop an eco‐friendly and green SIB technique with superior performance for sustainable future use. Replacing the conventional inorganic electrode materials with green and safe organic electrodes will be a promising approach...
Anti‐hypoxia cancer nanomedicine (AHCN) holds exciting potential in improving oxygen‐dependent therapeutic efficiencies of malignant tumors. However, most studies regarding AHCN focus on optimizing structure and function of nanomaterials with presupposed successful entry into tumor cells. From such a traditional perspective, the main barrier that AHCN needs to overcome is mainly the tumor cell membrane...
The practical application of aqueous rechargeable batteries is hampered by the low energy density and poor cycle stability, which mostly arises from the corrosion of cathode current collector, exfoliation of active material, and narrow electrochemical stability window of aqueous electrolyte. A light‐weight and low‐cost cathode current collector composed of graphite and carbon nanotube coated on nylon...
The quest for an all‐organic nanosystem with negligible cytotoxicity and remarkable in vivo tumor theranostic capability is inescapably unending. Hitherto, the landscape of available photothermal agents is dominated by metal‐based nanoparticles (NPs) with attendant in vivo negatives. Here, an all‐organic‐composed theranostic nanosystem with outstanding biocompatibility for fluorescence image‐guided...
Perovskite solar cells (PSCs) have become one of the most promising renewable energy converting devices. However, in order to reach a sufficiently high power conversion efficiency (PCE), the PSCs typically require a high‐temperature sintering process to prepare mesostructured TiO2 as an efficient electron transport layer (ETL), which prohibits the PSCs from commercialization in the future. This work...
Precise delivery of therapeutic cells to the desired site in vivo is an emerging and promising cellular therapy in precision medicine. This paper presents the development of a magnet‐driven and image‐guided degradable microrobot that can precisely deliver engineered stem cells for orthotopic liver tumor treatment. The microrobot employs a burr‐like porous sphere structure and is made with a synthesized...
While organic–inorganic halide perovskite solar cells (PSCs) show great potential for realizing low‐cost and easily fabricated photovoltaics, the unexpected defects and long‐term stability against moisture are the main issues hindering their practical applications. Herein, a strategy is demonstrated to address the main issues by introducing lead sulfide quantum dots (QDs) on the perovskite surface...
Bipolar membranes (BPMs) have recently received much attention for their potential to improve the water dissociation reaction (WDR) at their junction by utilizing catalysts. Herein, composite catalysts (Fe2O3@GO) comprising hematite nanoparticles (α‐Fe2O3) grown on 2D graphene oxide (GO) nanosheets are reported, which show unprecedentedly high water dissociation performance in the BPM. Furthermore,...
Tin‐based compounds have received much attention as anode materials for lithium/sodium ion batteries owing to their high theoretical capacity. However, the huge volume change usually leads to the pulverization of electrode, giving rise to a poor cycle performance, which have severely hampered their practical application. Herein, highly durable yolk–shell SnSe2 nanospheres (SnSe2@SeC) are prepared...
Transition metal chalcogenides with high theoretical capacity are promising conversion‐type anode materials for sodium ion batteries (SIBs), but often suffer from unsatisfied cycling stability (hundreds of cycles) caused by structural collapse and agglomerate. Herein, a rational strategy of tunable surface selenization on highly crystalline MoO2‐based carbon substrate is designed, where the sheet‐like...
Single‐atom catalysts have become a hot spot because of the high atom utilization efficiency and excellent activity. However, the effect of the support structure in the single‐atom catalyst is often unnoticed in the catalytic process. Herein, a series of carbon spheres supported Ni–N4 single‐atom catalysts with different support structures are successfully synthesized by the fine adjustment of synthetic...
In article number 2003225, Soo Young Kim, Ho Won Jang, and co‐workers successfully fabricate preconditioned resistive switching memory devices using lead‐free dual‐phase halide perovskites. The devices show filamentary resistive switching behavior involving Ag cations in halide perovskites with ultra‐low operating voltages, and high on/off ratio.
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