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The design and characterization of purely organic room‐temperature phosphorescent (RTP) materials for optoelectronic applications is currently the focus of research in the field of organic electronics. Particularly, with the merits of preparation controllability and modulation flexibility, host–guest material systems are encouraging candidates that can prepare high‐performance RTP materials. By regulating...
This paper describes a self‐regulating system that combines wrinkle‐patterned hydrogels with plasmonic nanoparticle (NP) lattices. In the feedback loop, the wrinkle patterns flatten in response to moisture, which then allows light to reach the NP lattice on the bottom layer. Upon light absorption, the NP lattice produces a photothermal effect that dries the hydrogel, and the system then returns to...
NIR‐IIa Cell Tracker
In article number 2105362, Jen‐Shyang Ni, Kai Li, and co‐workers design a series of NIR‐II fluorophores through a heteroatom‐inserted electron delocalization strategy, which is used as a NIR‐IIa cell tracker to dynamically track the homing of transplanted stem cells in the acute lung injury model.
High‐Resolution Sensing
In article number 2104706, Jingbin Zeng, Zifeng Yan, Yadong Yin, and co‐workers fabricate a hybrid pressure aerogel/hydrogel sensor by integrating a polypyrrole nanotube‐structured aerogel into a polyacrylamide hydrogel. With high stretchability and self‐healing property, the hybrid polymer sensor exhibits stable performance in high‐resolution sensing of a wide range of pressure...
Cell‐laden structures are widely applied for a variety of tissue engineering applications, including tissue restoration. Cell‐to‐cell interactions in bioprinted structures are important for successful tissue restoration, because cell–cell signaling pathways can regulate tissue development and stem cell fate. However, the low degree of cell–cell interaction in conventional cell‐laden bioprinted structures...
Reconfiguration of amorphous complex oxides provides a readily controllable source of stress that can be leveraged in nanoscale assembly to access a broad range of 3D geometries and hybrid materials. An amorphous SrTiO3 layer on a Si:B/Si1−xGex:B heterostructure is reconfigured at the atomic scale upon heating, exhibiting a change in volume of ≈2% and accompanying biaxial stress. The Si:B/Si1−xGex...
Electrocatalytic CO2 reduction reaction (CO2RR) toward formate production can be operated under mild conditions with high energy conversion efficiency while migrating the greenhouse effect. Herein, an integrated 3D open network of interconnected bismuthene arrays (3D Bi‐ene‐A/CM) is fabricated via in situ electrochemically topotactic transformation from BiOCOOH nanosheet arrays supported on the copper...
Aqueous rechargeable zinc‐ion batteries (ARZIBs) are promising energy storage systems owing to their ecofriendliness, safety, and cost‐efficiency. However, the sluggish Zn2+ diffusion kinetics originated from its inherent large atomic mass and high polarization remains an ongoing challenge. To this end, electrodes with 3D architectures and high porosity are highly desired. This work reports a rational...
Carbon dot (CD) based long‐lived afterglow emission materials have attracted attention in recent years, but demonstration of white‐light room‐temperature afterglow remains challenging, due to the difficulty of simultaneous generation of multiple long‐lived excited states with distinct chromatic emission. In this work, a white‐light room‐temperature long‐lived afterglow emission from a CD powder with...
Achieving high energy density and long cycle life in realistic batteries is still an unmet need, which has triggered research into the discoveries of new electrode materials as well as new storage mechanisms. As a kind of new cathode materials for rechargeable lithium batteries, organosulfide compounds R‐Sn‐R (n = 3–6) based on conversion chemistries of SS bonds have many advantages and promising...
Metal deposition with photocatalyst is a promising way to surmount the restriction of fast e−/h+ recombination to improve the photocatalytic performance. However, the improvement remains limited by the existing strategies adopted for depositing metal particles due to the serious aggregation and large unconnected area on photocatalyst surface. Here, a strategy is proposed by directly grafting hypercrosslinked...
Infrared Solar Cells
PbS colloidal quantum dot infrared solar cells can supplement silicon or perovskite solar cells. The energy level evolution of large size PbS quantum dots causes the authors to reconsider the matching charge extraction contacts. In article number 2105495, Haisheng Song and co‐workers develop a sputtered ZnO‐based champion device which obtains a certified power conversion efficiency...
The development of novel redox‐active polymers for sustainable sodium ion batteries (SIBs) has captured growing attention, but battery performance has been significantly limited by poor reversible specific capacities, where the majority of aromatic C6‐benzene linkages are redox inactive. Here, a simple, yet efficient approach to improve sodium (Na) storage on these C6‐benzene rings within a porous...
Remote temperature sensing at the micro‐ and nanoscale is key in fields such as photonics, electronics, energy, or biomedicine, with optical properties being one of the most used transducing mechanisms for such sensors. Ga2O3 presents very high chemical and thermal stability, as well as high radiation resistance, becoming of great interest to be used under extreme conditions, for example, electrical...
Electrochemical generation of hydrogen peroxide (H2O2) is an attractive alternative to the energy‐intensive anthraquinone oxidation process. Metal‐free carbon‐based materials such as graphene show great promise as efficient electrocatalysts in alkaline media. In particular, the graphene edges possess superior electrochemical properties than the basal plane. However, identification and enhancement...
Given the inherent characteristics of transition metal fluorides and open tunnel‐type frameworks, intercalation‐conversion‐type FeF3·0.33H2O has attracted widespread attention as a promising lithium‐ion battery cathode material with high operating voltage and high energy density. However, its low electronic conductivity and poor structural stability impede its practical application in high‐rate capacity...
Spatial confinement of matter in functional nanostructures has propelled these systems to the forefront of nanoscience, both as a playground for exotic physics and quantum phenomena and in multiple applications including plasmonics, optoelectronics, and sensing. In parallel, the emergence of monochromated electron energy loss spectroscopy (EELS) has enabled exploration of local nanoplasmonic functionalities...
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