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Black phosphorus quantum dots coordinated with a sulfonic ester of the titanium ligand are prepared and exhibit enhanced stability. In vitro and in vivo photoacoustic imaging applications demonstrate that the quantum dots can efficiently accumulate inside the tumor producing tumor profiles with high spatial resolution, demonstrating their potential as an efficient agent for photoacoustic imaging....
A facile, self‐templated strategy for the synthesis of Co‐ and N‐doped carbon microtubular structures composed of nanoscale hollow spheres and nanotubes is proposed. Cobalt oxalate microtubes serve simultaneously as the solid cobalt precursor for the in situ conversion reaction to metal‐organic framework and self‐templates for the 1D tubular structure.
A post‐permeation method is constructed for fabricating bulk‐heterojunction hybrid solar cells. Porous CdTe film is prepared by annealing the mixture solution of aqueous CdTe nanocrystals and cetyltrimethyl ammonium bromide, after which the post‐permeation of polymer is employed. By this method, kinds of polymers can be applied regardless of the intermiscibility with the nanoparticles. The inorganic...
Titanium ligand coordinated black phosphorus quantum dots (TiL4@BPQDs) are fabricated as a new photoacoustic imaging agent by Han Zhang, Huaiyu Wang, Xue‐Feng Yu, and co‐workers in article number 1602896. The TiL4@BPQDs exhibit high stability and high spatial resolution in detecting tumors clearly, demonstrating the great potential as an efficient contrast agent in photoacoustic imaging of cancer...
Using spectroscopic and thermoelectric characterization, the effect of organic bases on the doping of carbon nanotubes is investigated by Y. Nonoguchi, R. M. Uda, T. Kawai, and co‐workers in article number 1603420. The composite prepared at an appropriate pH shows n‐type transport properties with excellent air stability, demonstrating a green and practical route to n‐type thermoelectric materials...
Photosensitizer‐loaded, upconverting nanoparticles that can function as a near infrared light‐responsive inhibitor of β‐amyloid peptide aggregation is visualized. The suppression of β‐amyloid aggregation is considered to be an attractive therapeutic intervention for treating Alzheimer's disease. In article number 1603139, by Chan Beum Park and co‐workers, a new strategy is provided to overcome the...
Carbon nanomaterials have excellent humidity sensing properties. Here, it is demonstrated that multiwalled carbon‐nanotube (MWCNT)‐ and reduced‐graphene‐oxide (rGO)‐based conductive films have opposite humidity/electrical resistance responses: MWCNTs increase their electrical resistance (positive response) and rGOs decrease their electrical resistance (negative response). The authors propose a new...
Atomic force microscopy (AFM) has evolved to be one of the most powerful tools for the characterization of material surfaces especially at the nanoscale. Recent development of AFM has incorporated a suite of analytical techniques including surface‐enhanced Raman scattering (SERS) technique and infrared (IR) spectroscopy to further reveal chemical composition and map the chemical distribution. This...
Water‐dispersed organic base nanoparticles are utilized for the highly stable n‐type doping of single‐walled carbon nanotubes in aqueous dispersion. Long‐term stability is often a critical challenge in the application of n‐type organic conductors. The present n‐type organic materials exhibit almost no degradation in the thermoelectric properties over months, in air.
Developing appropriate sulfur cathode materials in carbonate‐based electrolyte is an important research subject for lithium‐sulfur batteries. Although several microporous carbon materials as host for sulfur reveal the effect, methods for producing microporous carbon are neither easy nor well controllable. Moreover, due to the complexity and limitation of microporous carbon in their fabrication process,...
Improved thin‐film microbatteries are needed to provide appropriate energy‐storage options to power the multitude of devices that will bring the proposed “Internet of Things” network to fruition (e.g., active radio‐frequency identification tags and microcontrollers for wearable and implantable devices). Although impressive efforts have been made to improve the energy density of 3D microbatteries,...
In article number 1603306 Bin Ding and co‐workers fabricate a cleanable air filter that transfers moisture and effectively captures PM2.5. The air filter was fabricated via electrospinning using super‐hydrophilic PAN fibers as the adsorption‐desorption vectors for moisture‐vapor and hydrophobic PVDF fibers as the repellent components. A hydrophobic to super‐hydrophilic gradient structure provides...
Nanoelectronic DNA sequencing can provide an important alternative to sequencing‐by‐synthesis by reducing sample preparation time, cost, and complexity as a high‐throughput next‐generation technique with accurate single‐molecule identification. However, sample noise and signature overlap continue to prevent high‐resolution and accurate sequencing results. Probing the molecular orbitals of chemically...
The lethal danger of particulate matter (PM) pollution on health leads to the development of challenging individual protection materials that should ideally exhibit a high PM2.5 purification efficiency, low air resistance, an important moisture‐vapor transmission rate (MVTR), and an easy‐to‐clean property. Herein, a cleanable air filter able to rapidly transfer moisture and efficiently capture PM2.5...
Recently introduced field of topological photonics aims to explore the concepts of topological insulators for novel phenomena in optics. Here polymeric chains of subwavelength silicon nanodisks are studied and it is demonstrated that these chains can support two types of topological edge modes based on magnetic and electric Mie resonances, and their topological properties are fully dictated by the...
Rose bengal (RB)‐loaded upconverting nanocomposites are synthesized as a near‐infrared (NIR)‐responsive inhibitor of Aβ aggregation. Rattle‐structured, organosilica shell (ROS) is deposited on NaYF4:Yb,Er nanocrystals (UCNPs) for high loading efficiency and disaggregation of RB. RB/UCNP@ROS successfully inhibits Aβ self‐assembly under NIR irradiation by generating 1O2. Furthermore, photoexcited RB/UCNP@ROS...
Highly optimized nickel cobalt mixed oxide has been derived from zeolite imidazole frameworks. While the pure cobalt oxide gives only 178.7 F g−1 as the specific capacitance at a current density of 1 A g−1, the optimized Ni:Co 1:1 has given an extremely high and unprecedented specific capacitance of 1931 F g−1 at a current density of 1 A g−1, with a capacitance retention of 69.5% after 5000 cycles...
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