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In article number 1805228, Ihsan Amin, Tao Zhang, Rainer Jordan, and co‐workers present the direct covalent functionalization of hexagonal boron nitride (hBN) with polymer brushes under mild conditions. Photopolymerization results demonstrate the formation of thick and homogeneous (micropatterned, graded) polymer brushes covalently bound to hBN. The brush layer mechanically and chemically stabilizes...
Similar to graphene, few‐layer black phosphorus (BP) features thermal stability, mechanical properties, and characteristic dimension effects, which has potential as a new member of nanofillers for fabricating polymer nanocomposites. Herein, a cross‐linked polyphosphazene‐functionalized BP (BP‐PZN) is developed with abundant –NH2 groups via a one‐pot polycondensation of 4,4′‐diaminodiphenyl ether and...
Sodium (Na) ion batteries are attracting increasing attention for use in various electrical applications. However, the electrochemical behaviors, particularly the working voltages, of Na ion batteries are substantially lower than those of lithium (Li) ion batteries. Worse, the state‐of‐the‐art Na ion battery cannot meet the demand of miniaturized in modern electronics. Here, we demonstrate that electrochemically...
The fundamental understanding of electrocatalytic active sites for hydrogen evolution reaction (HER) is significantly important for the development of metal complex involved carbon electrocatalysts with low kinetic barrier. Here, the MSxNy (M = Fe, Co, and Ni, x/y are 2/2, 0/4, and 4/0, respectively) active centers are immobilized into ladder‐type, highly crystalline coordination polymers as model...
A simple, new synthetic method that produces hollow, mesoporous carbon microparticles, each with a single hole on its surface, is reported. The synthesis involves unique templates, which are composed of gaseous bubbles and colloidal silica, and poly(furfuryl alcohol) as a carbon precursor. The conditions that give these morphologically unique carbon microparticles are investigated, and the mechanisms...
A bottom‐up approach toward 3D hierarchical macroporous polypyrrole aerogels is demonstrated via soft template‐directed synthesis and self‐assembly of ultrathin polypyrrole nanosheets in solution, which present interconnected macropores, ultrathin walls, and large specific surface areas, thereby exhibiting a high capacity, satisfactory rate capability, and excellent cycling stability for Na‐ion storage...
A tetrahedral DNA nanostructure (TDN), a novel type of DNA nanomaterials, is able to regulate chondrocyte phenotype and promote chondrocyte proliferation, as presented in article number 1602770 by Yunfeng Lin and co‐workers. The regulation of cell phenotype is related with down‐regulating the Notch signaling pathway. This discovery sheds light on the potential of TDNs in future medicine, especially...
Utilizing biomaterials to regulate the phenotype and proliferation of chondrocytes is a promising approach for effective cartilage tissue regeneration. Recently, a significant amount of effort has been invested into directing chondrocytes toward a desired location and function by utilizing biomaterials to control the dedifferentiation and phenotypic loss of chondrocytes during in vitro monolayer culture...
On page 5944, T. Zhang, D. Xing, and co‐workers utilize upconversion luminescent materials to construct a new theranostic nanoprobe. This probe detects and images specific tumor‐related mRNA and monitors target‐triggered therapeutic drug release according to the mRNA expression level under near infrared (NIR) irradiation.
Remote optical detection and imaging of specific tumor‐related biomarkers and simultaneous activation of therapy according to the expression level of the biomarkers in tumor site with theranostic probes should be an effective modality for treatment of cancers. Herein, an upconversion nanobeacon (UCNPs‐MB/Dox) is proposed as a new theranostic nanoprobe to ratiometrically detect and visualize the thymidine...
The controllable synthesis of uniform tungsten diselenide (WSe2) is crucial for its emerging applications due to the high sensitivity of its extraordinary physicochemical properties to its layer numbers. However, undesirable multilayer regions inevitably form during the fabrication of WSe2 via the traditional chemical vapor deposition process resulted from the lack of significantly energetically favorable...
A Cu‐assisted self‐limited growth method is proposed to achieve the ultra‐fast growth of strictly monolayer and high‐quality WSe2 crystals, by L. Fu and co‐workers on page 5741. Cu can prevent the layer accumulation since it occupies the surface of the WSe2 crystals, thus the W atoms can only adsorb on the edge site to achieve the size extension.
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