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2D carbon nanomaterials such as graphene, carbon nanosheets, and their derivatives, representing the emerging class of advanced multifunctional materials, have gained great research interest because of their extensive applications ranging from electrochemistry to catalysis. However, sustainable and scalable synthesis of 2D carbon nanosheets (CNs) with hierarchical architecture and irregular structure...
Smart Photonic Materials
In article number 2204199, Bin Wang, Jinpeng Li, Guangdong Ying, and co‐workers construct a dual photonic bandgap structure to achieve flexible switching of intensity, wavelength, and direction of circularly polarized luminescence accompanied by ultra‐high asymmetry factor values. This work provides insights into the real‐time manipulation of circularly polarized signals by...
Currently, the smart photonic materials that can switch circularly polarized signals in real‐time have attracted extensive attention due to numerous potential applications in information storage and photonics displays. However, the dynamically reversible switching of circularly polarized signals requires precise structural reconfiguration, which is rarely achieved in traditional biomaterials. Herein,...
Fabricating ultrathin silicon (Si) channels down to critical dimension (CD) <10 nm, a key capability to implementing cutting‐edge microelectronics and quantum charge‐qubits, has never been accomplished via an extremely low‐cost catalytic growth. In this work, 3D stacked ultrathin Si nanowires (SiNWs) are demonstrated, with width and height of Wnw = 9.9 ± 1.2 nm (down to 8 nm) and Hnw = 18.8 ± 1...
Droplet Control
In article number 2204390, Linwei Yu and co‐workers successfully demonstrate stacked growth integration of ultrathin silicon nanowires, with width and height of Wnw = 9.9 ± 1.2 nm (down to 8 nm) and Hnw = 18.8 ± 1.8 nm approaching to the critical‐dimension of 10 nm technology node, thanks to a self‐delimited droplet control strategy, with tunable channel cross‐sections, which are ideal...
Some new insights into traditional metal pretreatment of anticorrosion for high stable Zn metal anodes are provided. A developed pretreatment methodology is employed to prefer the crystal plane of polycrystalline Zn and create 3.26 µm protective coatings mainly consisting of organic polymers and zinc salts on Zn foils (ROZ@Zn). In this process, Zn metal exhibits a surface‐preferred (001) crystal plane...
Stretchable electronics are finding widespread applications in bio‐sensing, skin‐mimetic electronics, and flexible displays, where high‐density integration of elastic and durable interconnections is a key capability. Instead of forming a randomly crossed nanowire (NW) network, here, a large‐scale and precise integration of highly conductive nickel silicide nanospring (SiNix‐NS) arrays are demonstrated,...
As a nanoscale renewable resource derived from lignocellulosic materials, cellulose nanocrystals (CNCs) have the features of high purity, high crystallinity, high aspect ratio, high Young's modulus, and large specific surface area. The most interesting trait is that they can form the entire films with bright structural colors through the evaporation‐induced self‐assembly (EISA) process under certain...
The emergence of drug‐resistant bacteria and easy recurrence has been challenging in the clinical treatment of skin abscesses resulting from bacterial infections (e.g., by Staphylococcus aureus (S. aureus)). Herein, an antibacterial nanoagent capable of modulating the abscess microenvironment is designed to enhance photodynamic treatment of skin abscesses, and subsequently activate the immune system...
In article number 1906432, Dan‐Hong Wang, Xian‐He Bu, and co‐workers present a novel design strategy aiming to form heteropoly blues confined in defected Zr‐metal–organic framework (MOF), which can expose more unsaturated metal sites to promote the catalytic activity by adding thiourea. Moreover, 1‐butyl 3‐methyl imidazolium phosphomolybdate blues are also confined in Zr‐MOF to obtain higher oxidative...
The Keggin‐type polyoxometalates (POMs) are effective catalysts for oxidative desulfurization (ODS) and confining these POMs in metal–organic frameworks (MOFs) is a promising strategy to improve their performances. Herein, postsynthetic modification of POMs confined in MOFs by adding thiourea creates more unsaturated metal sites as defects, promoting ODS catalytic activity. Additional modification...
Current nanoparticle (NP) drug carriers mostly depend on the enhanced permeability and retention (EPR) effect for selective drug delivery to solid tumors. However, in the absence of a persistent EPR effect, the peritumoral endothelium can function as an access barrier to tumors and negatively affect the effectiveness of NPs. In recognition of the peritumoral endothelium as a potential barrier in drug...
Previously, double helix nanowire was reported by coating Pd/Pt/Au onto Au‐Ag alloy nanowire. Here, straight oleylamine‐stabilized ultrathin Au nanowires with single crystalline fcc lattice are surprisingly converted into double helix helices upon reacting with Ag in tetrahydrofuran (THF). The obtained Au‐Ag helical nanowires contain lattice distinctively different from the fcc lattice and are different...
In article number 1704531, Ye Wang, Yi‐Jun Xu, and co‐workers reveal the double‐edged sword role of graphene on boosted charge separation/transfer versus active site control by constructing a TiO2 nanotube arrays@RGO/MoS2 heterostructure. This finding manifests that an efficient design for a specific photoredox process over graphene‐semiconductor photocatalysts should take both improved charge separation/transfer...
Charge separation/transfer is generally believed to be the most key factor affecting the efficiency of photocatalysis, which however will be counteracted if not taking the active site engineering into account for a specific photoredox reaction. Here, a 3D heterostructure composite is designed consisting of MoS2 nanoplatelets decorated on reduced graphene oxide‐wrapped TiO2 nanotube arrays (TNTAs@RGO/MoS...
A simple one‐pot solvothermal method is reported to synthesize VS2 nanosheets featuring rich defects and an expanded (001) interlayer spacing as large as 1.00 nm, which is a ≈74% expansion as relative to that (0.575 nm) of the pristine counterpart. The interlayer‐expanded VS2 nanosheets show extraordinary kinetic metrics for electrocatalytic hydrogen evolution reaction (HER), exhibiting a low overpotential...
Inorganic perovskites with special semiconducting properties and structures have attracted great attention and are regarded as next generation candidates for optoelectronic devices. Herein, using a physical vapor deposition process with a controlled excess of PbBr2, dual‐phase all‐inorganic perovskite composite CsPbBr3–CsPb2Br5 thin films are prepared as light‐harvesting layers and incorporated in...
Promising semiconductor‐based photocatalysis toward achieving efficient solar‐to‐chemical energy conversion is an ideal strategy in response to the growing worldwide energy crisis, which however is often practically limited by the insufficient photoinduced charge‐carrier separation. Here, a rational cascade engineering of Au nanoparticles (NPs) decorated 2D/2D Bi2WO6–TiO2 (B–T) binanosheets to foster...
The development of artificial antigen presenting cells (aAPCs) to mimic the functions of APCs such as dendritic cells (DCs) to stimulate T cells and induce antitumor immune responses has attracted substantial interests in cancer immunotherapy. In this work, a unique red blood cell (RBC)‐based aAPC system is designed by engineering antigen peptide‐loaded major histocompatibility complex‐I and CD28...
The instability of few‐layer black phosphorus (FL‐BP) hampers its further applications. Here, it can be demonstrated that the instability of FL‐BP can also be the advantage for application in biosensor. First, gold nanoparticle/FL‐BP (BP‐Au) hybrid is facilely synthesized by mixing Au precursor with FL‐BP. BP‐Au shows outstanding catalytic activity (K = 1120 s−1 g−1) and low activation energy (17...
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