Molybdenum disulfide (MoS2 ), a typical 2D metal dichalcogenide (2DMD), has exhibited tremendous potential in optoelectronic device applications, especially photodetection. However, due to the weak light absorption of planar mono-/multilayers, limited cutoff wavelength edge, and lack high-quality junctions, most reported MoS2 -based photodetectors show undesirable performance. Here, structurized 3D heterojunction RGO-MoS2 /pyramid Si is demonstrated via simple solution-processing method....

Blocked up: Amphiphilic DNA-block copolymers were prepared in a fully automated single process by using DNA synthesizer. These materials formed micelles aqueous solution which applied as scaffold for DNA-templated organic reactions (see picture, red and green balls=reactants, yellow bar=new bond). For novel fluorogenic reaction, the conversions detected fluorescence spectroscopy. Supporting information this article is available on WWW under...

Transforming micelle structure: Amphiphilic DNA block copolymers form spherical micelles in solution. They can be transformed into rodlike by hybridization with long sequences, which consist of parallel aligned double-stranded molecules "glued" together hydrophobic interactions the organic polymer (see picture). The template determines length aggregates. Supporting information for this article is available on WWW under http://www.wiley-vch.de/contents/jc_2002/2007/z603064_s.pdf or from...

Quantum dot (QD) light-emitting diodes (QLEDs) with an inverted architecture suffer from charge-injection imbalance and severe QD charging, which degrade device performance. Blocking excess electron injection into QDs is crucial for efficient QLEDs. It observed that polyethylenimine (PEI) has two opposite effects on injection: one blocking by its intrinsic insulativity the other promoting reducing work function of ZnO/PEI. In this work, insulating nature PEI been dominantly utilized to...

Sestrins are metabolic regulators that respond to stress by reducing the levels of reactive oxygen species (ROS) and inhibiting activity target rapamycin complex 1 (mTORC1). Previous research has demonstrated Sestrin2 mitigates ischemia-reperfusion (IR) injury in heart, liver, kidneys. However, its specific role IIR remains unclear. To elucidate intestinal injury, we conducted an experimental study using a C57BL/6J mouse model IIR. We noticed increase expression indicators associated with...

Abstract The copper(I) bromide/1‐(5,6,7,8‐tetrahydroquinolin‐8‐yl)‐2‐methylpropan‐1‐one (CuBr‐ L3 ) combination catalyzed the cross‐coupling reactions between aryl or heteroaryl halides and aqueous ammonia with high yields to produce primary aromatic heteroaromatic amines at room temperature under mild conditions.

PEGylated copper sulfide nanoparticles with 3–7 nm size were synthesized through an aqueous synthetic route. <italic>In vivo</italic> photoacoustic tumor imaging revealed that smaller particles (&lt;5 nm) exhibited more effective contrast enhancement.

High-performance ZnO–MoS₂ core–shell nanopillar (NP) array-based photodetectors are fabricated by taking advantage of the light trapping effect ZnO NP array.

Core/shell CdTe/ZnS colloidal quantum dots with varying dopant levels (4.7–9.7%) of paramagnetic manganese ions spatially distributed within the thin ZnS shell are synthesized by aqueous approach. They exhibit both strong fluorescence originating from CdTe core (up to 45% room temperature emission yield) and high ionic relaxivity in range 10.7–5.4 mM–1 s–1, which render them promising dual fluorescent/paramagnetic probes.

Surface charge transfer doping (SCTD) induced p-type inversion layer was implemented in the graphene/silicon heterojunction solar cells, leading to significant improvement of device efficiency.

Multi-task learning(MTL) is an open and challenging problem in various real-world applications. The typical way of conducting multi-task learning establishing some global parameter sharing mechanism across all tasks or assigning each task individual set parameters with cross-connections between tasks. However, for most existing approaches, just thoroughly proportionally share the features without distinguishing helpfulness them. By that, would be intervened by unhelpful that are useful other...

A large number of cyclic peptides, which exhibit a range biological activities, have been found in nature. The reason peptides that attracted world wide attention and made them extensively studied, is their enhanced metabolic stabilities, specificities, bioavailability, conformational constrained structural feature, make important leads for drug discovery, as actual drugs. Many show very promising including anticancer, antibacterial, antiviral, antifungal, anti-inflammatory, anti-clotting or...

Water-soluble core−shell star polymers consisting of a dendritic polyphenylene core and an outer shell containing defined number amino groups have been synthesized via atom transfer radical polymerization (ATRP). All macromolecules efficiently interacted with diverse set DNA fragments, stable complexes were formed visualized by atomic force microscopy. The observed tight binding DNA, which was found in the sub-nanomolar range, mainly attributed to strong electrostatic interactions. Complex...

The p–n homojunctions are essential components for high-efficiency optoelectronic devices. However, the lack of p-type doping in CdS nanostructures hampers fabrication efficient photovoltaic (PV) devices from homojunctions. Here we report a facile solution-processed method to achieve nanoribbons (NRs) via surface charge transfer mechanism by using spin-coated MoO3 nanodots (NDs). NDs-decorated NRs exhibited hole concentration as high 8.5 × 1019 cm–3, with conductivity tunable wide range 7...

Abstract Based on our previous studies, the scope of transformation 2‐furylcarbinols into spirofurooxindoles, and also skeletal rearrangements spiro[furo‐oxindoles] spiro[thieno‐oxindoles] were studied. The thermally rearranged spiro[pentenone‐oxindoles] by a mechanism involving conrotatory electrocyclization 4π‐electron system. free energy step was calculated to interpret stereochemical outcomes. In contrast, under acidic conditions thieno[2,3‐ c ]quinolin‐4‐ones, an interesting...

Water is a trace gas of interest for plasma-based medical applications. We use two-temperature hybrid global model to simulate chemically complex, bounded, He/H2O atmospheric pressure discharge, including 43 species with clusters up . The discharge embedded in larger volume, which the fraction controlled, leading depletion water within and diffusive flows reaction products walls. For planar 1 cm electrode radius 0.5 mm gap, driven at 13.56 MHz, we determine diffusion effects α γ transition,...

Amphiphile DNA-Blockcopolymere wurden voll automatisiert in einem einzigen Prozess mithilfe eines DNA-Synthesizers hergestellt. Diese Materialien bilden wässriger Lösung Micellen, die als Templat für DNA-gestützte organische Reaktionen eingesetzt (siehe Abbildung; rote und grüne Kugeln: Reaktanten, gelber Balken: neue Bindung). Mit einer neuartigen fluorogenen Reaktion wurde Umwandlung fluoreszenzspektroskopisch detektiert.

A general synthesis of 1-aryl-1-H-indazoles from o-halogenated aryl aldehydes or ketones and hydrazines was described. This protocol included an intermolecular condensation a ligand-free copper-catalyzed intramolecular Ullmann-type coupling reaction. method applied to wide range substrates produce the indazole products in good yields.

Monodispersed superparticles (SPs) consisting of hydrophobic CuInS2@ZnS quantum dots (QDs) were prepared through a self-assembling process induced by introducing ethanol into the cyclohexane solution QDs stabilized 1-dodecanethiol. The solvent polarity-dependent size and distribution resultant SPs carefully characterized using scanning electron microscopy, transmission dynamic light scattering. formation growth mechanism investigated. By manipulating nucleation kinetics addition rate...

l-Proline was identified as an effective additive to promote the Rosenmund-von Braun reaction at a lower temperature (80-120 °C). This modified cyanation of aryl bromides exhibits excellent functional-group compatibility, and provide efficient convenient approach for synthesis nitriles.

A series of 5,8-dioxo-pyrimido[4,5-e][1,4]diazepine derivatives were designed and synthesized as new inhibitors against wild-type EGFR a panel mutants, including the clinical resistance related T790M mutants. One most potent compounds 2l inhibited all forms evaluated with low nM IC50 values. It also strongly suppressed proliferation H1975 HCC827 non-small cell lung cancer cells values 69 71 nM, respectively.

Atmospheric pressure radio-frequency (rf) micro-discharges have many applications in bio-medical and materials processing. We benchmark our current-driven two-temperature hybrid model that includes sheath electron multiplication effects, by comparing the results with previously found experimental results. use more than one secondary emission coefficient comparisons, as quantity is particularly important determining α–γ mode transition. For helium discharges we explore effect of trace amounts...