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Metal peroxide nanoparticles designed to elevate the oxidative stress are considered a promising nanotherapeutics in biomedical applications, including chemotherapy, photodynamic therapy, and bacterial disinfection. However, their lack of specificity towards the therapeutic target can cause toxic side effects to healthy tissues. Here, silver peroxide nanoparticles (Ag2O2 NPs) capable of controlled...
Graphene quantum dot (GQD) is one of the youngest superstars of the carbon family. Since its emergence in 2008, GQD has attracted a great deal of attention due to its unique optoelectrical properties. Non‐zero bandgap, the ability to accommodate functional groups and dopants, excellent dispersibility, highly tunable properties, and biocompatibility are among the most important characteristics of GQDs...
Solution‐processed colloidal quantum dots (CQDs) are promising candidates for the third‐generation photovoltaics due to their low cost and spectral tunability. The development of CQD solar cells mainly relies on high‐quality CQD ink, smooth and dense film, and charge‐extraction‐favored device architectures. In particular, advances in the processing of CQDs are essential for high‐quality QD solids...
The electrochemical oxygen evolution reaction (OER) by efficient catalysts is a crucial step for the conversion of renewable energy into hydrogen fuel, in which surface/near‐surface engineering has been recognized as an effective strategy for enhancing the intrinsic activities of the OER electrocatalysts. Herein, a facile quenching approach is demonstrated that can simultaneously enable the required...
Chemically robust single‐molecule magnets (SMMs) with sufficiently high blocking temperatures TB are among the key building blocks for the realization of molecular spintronic or quantum computing devices. Such device applications require access to the magnetic system of a SMM molecule by means of electronic transport, which primarily depends on the interaction of magnetic orbitals with the electronic...
Bone Tumor Suppression
Magnetic bone cement incorporating magnetically soft zinc ferrite nanoparticles and aligned in a direct current magnetic field realized exceptionally high heating power in live animals under clinically safe field parameters for hyperthermia. Suppression of osteosarcoma in rabbits by hyperthermia substantially enhances survival rate. More details can be found in article number...
Composites based on carbon nanotubes (CNTs) are promising patternable materials that can be engineered to incorporate the outstanding properties of CNTs into various applications via printing technologies. However, conventional printing methods for CNTs require further improvement to overcome the major drawbacks that limit the patterning resolution and target substrate. Herein, an intaglio contact...
Reasonable design of electrode materials with specific morphology and structure can efficiently improve the metal ions storage and transmission properties of metal ion batteries. Here the preparation of spirobifluorene‐based three‐dimensional carbiyne nanosphere (SBFCY‐NS) that is composed of spirobifluorene (SBF) and alkyne bonds is reported. Benefiting from the rigid spatial structure of SBF, numerous...
Device Miniaturization
Intaglio contact printing enables the realization of highly precise carbon nanotube (CNT) network patterns exhibiting multi‐functionalities without restrictions on the substrate. In article number 2106174, Soonmin Seo, Yoon‐Kyu Song, Ju‐Hyung Kim, and co‐workers present this method for the fabrication and miniaturization of high‐performance devices, including flexible fringe‐effect...
3D Carbon Electrodes
Three‐dimensional spirobifluorene‐based carbiyne nanospheres (SBFCY‐NSs) are prepared by Jinchong Xiao, Jianjiang He, Changshui Huang, and co‐workers in article number 2106328. The rationally designed chemical structure contributes to the formation of an ion diffusion pathway protected by a robust solid electrolyte interface film in a lithium ion battery.
Fused‐ring electron donors boost the efficiency of organic solar cells (OSCs), but they suffer from high cost and low yield for their large synthetic complexity (SC > 30%). Herein, the authors develop a series of simple non‐fused‐ring electron donors, PF1 and PF2, which alternately consist of furan‐3‐carboxylate and 2,2′‐bithiophene. Note that PF1 and PF2 present very small SC of 9.7% for their...
Transition‐metal oxides with a strain effect have attracted immense interest as cathode materials for fuel cells. However, owing to the introduction of heterostructures, substrates, or a large number of defects during the synthesis of strain‐bearing catalysts, not only is the structure–activity relationship complicated but also their performance is mediocre. In this study, a mode of strain introduction...
Organic molecular catalysts have received great attention as they have the merits of well‐controlled molecular structures for the development of catalytic chemistry. Herein, the electronic distribution of active sites is regulated by asymmetrically introducing S‐heterocycle on one side of the molecular core. As a result, the asymmetric as‐PYT and as‐BNT show higher oxygen reduction performance than...
Li metal is regarded as a promising anode for high‐energy‐density Li batteries, while the limited cycle life and fast capacity decay caused by notorious Li dendrite growth seriously impedes its application. Herein, a robust and highly lithiophilic bacterial cellulose‐derived carbon nanofiber@reduced graphene oxide nanosheet (BC‐CNF@rGO) composite scaffold is fabricated as a host for dendrite‐free...
Demonstrating highly efficient alternating current (AC) magnetic field heating of nanoparticles in physiological environments under clinically safe field parameters has remained a great challenge, hindering clinical applications of magnetic hyperthermia. In this work, exceptionally high loss power of magnetic bone cement under the clinical safety limit of AC field parameters, incorporating direct...
Metal‐free carbon nanozymes could be promising with the unique features of intrinsic catalytic ability, structure diversity, and strong tolerance to acidic/alkaline media. However, to date, the study of metal‐free carbon nanozymes fell far behind metal‐based nanomaterials, in which, the majority reported much more peroxidase‐like activity than other enzyme‐mimicking behavior (e.g., oxidase). Thus,...
There are still great challenges to prepare high‐efficiency Ru‐based catalysts that are superior to Pt/C under acidic conditions, especially under high current conditions. In this work, a series of surfactant‐free noble metal doped Ru/CNT (M‐Ru/CNT, M = Pt, Rh, Pd, Ir, CNT stands for carbon nanotube) are prepared by microwave reduction method in 1 minute with ≈3–3.5 nm in size for the first time....
The host–guest interaction acts as an essential part of supramolecular chemistry, which can be applied in confined reaction. However, it is challenging to obtain the dynamic process during confined reactions below micromolar concentrations. In this work, a new method is provided to characterize the dimerization process of the guest 1,2‐bis(4‐pyridinyl) ethylene in host cucurbit[8]curil using scanning...
Targeted and immunological therapy have revolutionized the malignancy treatment, but is suffering from the dose‐limiting side effects and inadequate responsiveness. The emerging nanoscale infinite coordination polymers provide a feasible strategy for tumor targeting and immune sensitization. Herein, a “one‐pot” self‐assembled strategy based on dynamic combinatorial chemistry (DCC) principle is designed...
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