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Precise quantification of intracellular iron contents is important to biomedical applications of magnetic nanoparticles. Current approaches for iron quantification rely on specialized instruments while most only yield iron quantities averaged over plenty of cells. Here, a simple and robust approach, combining digital optical microscopy with the Beer–Lambert's law, that allows for imaging stainable...
Graphene is an attractive material for broadband photodetection but suffers from weak light absorption. Coating graphene with quantum dots can significantly enhance light absorption and create extraordinarily high photogain. This high gain is often explained by the classical gain theory which is unfortunately an implicit function and may even be questionable. In this work, explicit gain equations...
Artificial visual systems with image sensing and storage functions have considerable potential in the field of artificial intelligence. Light‐stimulated synaptic devices can be applied for neuromorphic computing to build artificial visual systems. Here, optoelectronic synaptic transistors based on 5,15‐(2‐hydroxyphenyl)‐10,20‐(4‐nitrophenyl)porphyrin (TPP) and dinaphtho[2,3‐b:2′,3′‐f ]thieno[3,2‐b...
Electron transporting layers (ETLs), required to be optically transparent in perovskite solar cells (PSCs) having regular structures, possess a determinant effect on electron extraction and collection. Metal oxides (e.g., TiO2) have overwhelmingly served as ETLs, but usually have low electron mobility (μe < 10−2 cm2 V−1 s−1) not favorable for photovoltaic conversion. Here, metal oxides are replaced...
Developing efficient photocatalysts for synchronously producing H2 and high value‐added chemicals holds great promise to enhance solar energy conversion. Herein, a facile strategy of simultaneously engineering Pd cocatalyst and oxygen vacancies (VOs) on TiO2 to promote H2 production coupled with selective oxidation of benzylamine is demonstrated. The optimized PdSA+C/TiO2‐VO photocatalyst containing...
Membrane enclosed intracellular compartments have been exclusively associated with the eukaryotes, represented by the highly compartmentalized last eukaryotic common ancestor. Recent evidence showing the presence of membranous compartments with specific functions in archaea and bacteria makes it conceivable that the last universal common ancestor and its hypothetical precursor, the protocell, may...
Efficient production hosts are a key requirement for bringing biopharmaceutical and biotechnological innovations to the market. In this work, a truly universal high‐throughput platform for optimization of microbial protein production is described. Using droplet microfluidics, large genetic libraries of strains are encapsulated into biocompatible gel beads that are engineered to selectively retain...
2D materials have a great potential for wide‐range applications due to their adjustable bandgap characteristics and special crystal structures. β‐HgI2 is a new 2D van der Waals inorganic molecular crystal material with a wide bandgap of 4.03 eV, on whose preparation and properties there are few relevant reports due to the feature of instability of molecular crystals. Here, an economical method to...
Graphene aerogels derived from a biomolecule‐assisted aqueous electrochemical exfoliation route are explored as cathode materials in sodium–oxygen (Na–O2) batteries. To this end, the natural nucleotide adenosine monophosphate (AMP) is used in the multiple roles of exfoliating electrolyte, aqueous dispersant, and functionalizing agent to access high quality, electrocatalytically active graphene nanosheets...
Nanoparticles have been widely used in detection and killing of bacteria; however, targeting bacteria is still challenging. Delicate design of nanoparticles is required for simultaneous targeting, detection, and therapeutic functions. Here the use of Au/MnFe2O4 (Au/MFO) Janus nanoparticles to target Gram‐positive bacteria via metabolic labeling is reported and realize integrated self‐reporting and...
In article number 2005523, Steven Schmitt and co‐workers present microfluidic optimization of biotechnological protein production. The artwork displays a series of gel beads, each containing a colony of Komagataella phaffii secreting a protein that is captured and fluorescently labeled within the beads. Laser‐based analysis identifies high‐producing clones.
Hollow carbon‐based nanoarchitectures (HCAs) derived from zeolitic imidazolate frameworks (ZIFs), by virtue of their controllable morphology and dimension, high specific surface area and nitrogen content, richness of metal/metal compounds active sites, and hierarchical pore structure and easy exposure of active sites, have attracted great interests in many fields of applications, especially in heterogeneous...
Copper tetracyanoquinodimethane (CuTCNQ) has been investigated around 40 years as a representative bistable material. Meanwhile, micro/nanostructures of CuTCNQ is considered as the prototype of molecular electronics, which have attracted the world's attention and shown great potential applications in nanoelectronics. In this review, methods for synthesis of CuTCNQ micro/nanostructures are first summarized...
A systematic study is conducted to compare the performances and stability of active layers employing a high performance electron donor (PBDB‐T) combined with state‐of‐the‐art fullerene (PC71BM), nonfullerene (ITIC), and polymer (N2200) electron acceptors. The impact of the chemical nature of the acceptor on the durability of organic solar cells (OSCs) is elucidated by monitoring their photovoltaic...
The analysis of mutant nucleic acid (NA) variants can provide crucial clinical and biological insights for many diseases. Yet, existing analysis techniques are generally constrained by nonspecific “noise” signals from excessive wildtype background sequences, especially under rapid isothermal multiplexed target amplification conditions. Herein, the molecular hybridization chemistry between NA bases...
In article number 2005320, Irep Gözen and co‐workers demonstrate that the spontaneous subcompartmentalization of model protocells is governed by the physicochemical interaction of the protocell membranes with mineral‐like solid interfaces. In the described experiments, several tens of compartments emerge on the basal membrane of each adhered model protocell. They are able to encapsulate small molecules...
Developing robust and highly efficient electrocatalysts for oxygen evolution reaction (OER) is critical for renewable, secure, and emission‐free energy technologies. Perovskite Ba0.5Sr0.5Co0.8Fe0.2O3‐δ (BSCF) has emerged as a promising OER electrocatalyst with desirable intrinsic activity. Inspired by the factor that substituting in transition‐metal sublattice of the perovskite can further optimize...
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