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Extensive efforts have been devoted to the design of organic photothermal agents (PTAs) that absorb in the second near‐infrared (NIR‐II) bio‐window, which can provide deeper tissue penetration that is significant for phototheranostics of lethal brain tumors. Herein, the first example of NIR‐II‐absorbing small organic molecule (N1) derived from perylene monoamide (PMI) and its bio‐application after...
Ligand‐Free PtAg Nanoalloys
In article number 2206772, Indranath Chakraborty and co‐workers use the atomic pair‐distribution function combined with powder X‐ray diffraction and transmission electron microscopy for structural analysis of ligand‐free PtAg nanoclusters (NCs). They further investigate the intrinsic enzyme‐mimicking properties of these ligand‐free NCs and explored the mechanistic details...
3D Multi‐Faceted Tumor Models
In article number 2205904, Bee Luan Khoo and co‐workers present a novel microfluidic tumor model, TAMPIEB, which integrates tumor‐associated macrophages (TAMs) and bladder cancer cells to investigate the influence of bacterial distribution on immunomodulation in the tumor microenvironment in vivo. This research represents the first successful demonstration that biofilm‐induced...
Rare‐Earth Selenites
A selenite‐based ultraviolet nonlinear optical (UV‐NLO) material, Sc(HSeO3)3, reveals remarkably well‐balanced UV‐NLO properties such as the shortest absorption edge (≈214 nm) among NLO‐active selenites, wide band gap (5.28 eV), large phase‐matchable second‐harmonic generation (SHG) response (5 × KH2PO4 (KDP)), and sufficiently large birefringence (cal. 0.105 @1064 nm). More details...
Mixed matrix membranes (MMMs), conjugating the advantages of flexible processing‐ability of polymers and high‐speed mass transfer of porous fillers, are recognized as the next‐generation high‐performance CO2 capture membranes for solving the current global climate challenge. However, controlling the crystallization of porous metal‐organic frameworks (MOFs) and thus the close stacking of MOF nanocrystals...
MSi2Z4 Monolayers
In article number 2206444, Agnieszka B. Kuc and co‐workers study from first‐principles monolayers of a new family of hexagonal MSi2Z4 compounds. These host 2D excitons with large response to magnetic field, with a broad range of g‐factors values, making them attractive for opto‐, spin‐ and valleytronic devices.
Microfibrous Architectures
In article number 2207331, Jiankang He and co‐workers propose an electrohydrodynamic printing strategy for the fabrication of orderly parallel microfibers with cell‐scale spacing. The resultant microfibrous architectures with cell‐scale spacing can accelerate the directional outgrowth of neurites and collective migration of Schwann cells to form highly‐aligned and densely‐organized...
BiVO4 Microswimmers
The surface modification of photocatalytic microswimmers by molecular imprinting is a promising approach to achieve selective capture and degradation of organic pollutants, which is otherwise impossible because of the non‐selective behavior of photogenerated reactive radicals. More details can be found in article number 2207303 by Katherine Villa and co‐workers.
2D materials have attracted great interest since the report of graphene. However, because of the fragile stability of ultra‐thin nanosheets, most studies are restricted to sheets maintained by strong covalent or coordination bonds. The research on which kind of bonds can maintain the free‐standing existence of 2D nanosheets is still of great significance. Recently, 2D ionic salts are successfully...
Oxidative damage and infection can prevent or delay tissue repair. Moreover, infection reinforces reactive oxygen species (ROS) formation, which makes the wound's condition even worse. Therefore, the need for antioxidant and antibacterial agents is felt for tissue regeneration. There are emerging up‐and‐coming biomaterials that recapitulate both properties into a package, offering an effective solution...
Optical anisotropy, which is quantified by birefringence (Δn) and linear dichroism (Δk), can significantly modulate the angle‐resolved polarized Raman spectroscopy (ARPRS) response of anisotropic layered materials (ALMs) by external interference. This work studies the separate modulation of birefringence on the ARPRS response and the intrinsic response by selecting transparent birefringent crystal...
Early transition metals based 2D carbides, nitrides and carbonitrides nanomaterials are known as MXenes, a novel and extensive new class of 2D materials family. Since the first accidently synthesis based discovery of Ti3C2 in 2011, more than 50 additional compositions have been experimentally reported, including at least eight distinct synthesis methods and also more than 100 stoichiometries are theoretically...
Bio‐Inspired Bouligand Nanostructures
In article number 2206847, Monirosadat Sadati and co‐workers present a 3D printing method for replicating intricate self‐assemblies in biomaterials. Using the flow in the 3D printer's nozzle, helical assemblies of cellulose nanorods are arranged in a uniform and long‐range concentric pattern that resembles Bouligand nanostructures found in mammalian cortical bones...
Solar Steam Generation
In article number 2204898, Dan Liu, Weiwei Lei, and co‐workers report a viable and general method that allows an effective synthesis of transition metal dichalcogenides (TMDs)‐O‐doped graphene nanosheet heterostructures by utilizing commercial TMD powder and sucrose as precursors. The solar evaporators of WS2‐O‐graphene exhibit high‐performance water evaporation due to the improved...
Establishing high performance ultraviolet (UV) nonlinear optical (NLO) selenite crystals with well‐balanced properties is very challenging attributable to their strong absorption for UV light. Here a rare‐earth selenite, Sc(HSeO3)3, with excellent UV NLO properties is introduced. Sc(HSeO3)3 crystallizing in the polar NCS space group, Cc, features a 3D archetiture built up by interconnected ScO6 octahedra...
Advanced functional materials with fascinating properties and extended structural design have greatly broadened their applications. Metamaterials, exhibiting unprecedented physical properties (mechanical, electromagnetic, acoustic, etc.), are considered frontiers of physics, material science, and engineering. With the emerging 3D printing technology, the manufacturing of metamaterials becomes much...
Photocatalyst with excellent semiconductor properties is the key point to realize the efficient photocatalytic hydrogen evolution (PHE). As a representative binary metal sulfide (BMS) semiconductor, cadmium sulfide (CdS) possesses suitable bandgap of 2.4 eV and negative conduction band potential, which has a great potential to realize efficient visible‐light PHE performance. In this work, CdS with...
Na3V2(PO4)2F3 (NVPF) is a suitable cathode for sodium‐ion batteries owing to its stable structure. However, the large radius of Na+ restricts diffusion kinetics during charging and discharging. Thus, in this study, a phosphomolybdic acid (PMA)‐assisted hydrothermal method is proposed. In the hydrothermal process, the NVPF morphologies vary from bulk to cuboid with varying PMA contents. The optimal...
Dead‐end filtration is a facile method to globally align single wall carbon nanotubes (SWCNTs) in large area films with a 2D order parameter, S2D, approaching unity. Uniaxial alignment has been achieved using pristine and hot‐embossed membranes but more sophisticated geometries have yet to be investigated. In this work, three different patterns with radial symmetry and an area of 3.8 cm2 are created...
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