Hybrid porous nanowire arrays composed of strongly interacting Co3O4 and carbon were prepared by a facile carbonization of the metal-organic framework grown on Cu foil. The resulting material, possessing a high surface area of 251 m(2) g(-1) and a large carbon content of 52.1 wt %, can be directly used as the working electrode for oxygen evolution reaction without employing extra substrates or binders. This novel oxygen evolution electrode can smoothly operate in alkaline solutions (e.g., 0.1 and 1.0 M KOH), affording a low onset potential of 1.47 V (vs reversible hydrogen electrode) and a stable current density of 10.0 mA cm(-2) at 1.52 V in 0.1 M KOH solution for at least 30 h, associated with a high Faradaic efficiency of 99.3%. The achieved ultrahigh oxygen evolution activity and strong durability, with superior performance in comparison to the state-of-the-art noble-metal/transition-metal and nonmetal catalysts, originate from the unique nanowire array electrode configuration and in situ carbon incorporation, which lead to the large active surface area, enhanced mass/charge transport capability, easy release of oxygen gas bubbles, and strong structural stability. Furthermore, the hybrid Co3O4-carbon porous nanowire arrays can also efficiently catalyze oxygen reduction reaction, featuring a desirable four-electron pathway for reversible oxygen evolution and reduction, which is potentially useful for rechargeable metal-air batteries, regenerative fuel cells, and other important clean energy devices.

In article number 1700804, Tsuyoshi Kawai, and Yoshiyuki Nonoguchi, and co-workers, report an approximately five-fold enhancement in the thermoelectric properties of single-walled carbon nanotube films using electrolytes. Complementary spectroscopic characterization with semitransparent carbon nanotube films reveals high-definition hole doping associated with electrolyte adsorption. This finding enables a synergistic enhancement of the electrical conductivity and the Seebeck coefficient. Sensors In article number 1604150, by L. C. P. M. de Smet and co-workers, CuBTC metal-organic framework (MOF) films are grown directly onto a micro-structured Cu transducer surface in a fast and controllable way by making use of the anodic dissolution of Cu ions in the presence of organic BTC linkers. Reversible capacitive response to methanol and water vapors is shown, while time-dependent capacitive responses are successfully simulated by diffusion-controlled kinetics, and equilibrium capacitive responses follow the Langmuir adsorption model. Cancer Therapy In article number 1700623, by Xiaowei Zeng, Lin Mei, and co-workers, a pH-sensitive drug delivery vehicle based on TPGS-modified polydopamine-coated mesoporous silica nanoparticles is developed. This nanoparticle shows good performance inhibiting cancer multidrug resistance by suppressing the function of the P-glycoprotein. This drug-loaded delivery platform exhibits significantly superior antitumor efficacy. The in situ electrochemical growth of Cu benzene-1,3,5-tricarboxylate (BTC) metal-organic frameworks directly on custom-fabricated, microstructured Cu interdigitated electrodes is reported. The resulting CuBTC-modified electrodes show a fast, reversible, and sensitive capacitive response to methanol and water vapors, enabling a quantitative detection in the range of 100-8000 ppm. communications 2D MoS 2 synaptic/neuronal transistors are fabricated using poly(vinyl alcohol) as laterally coupled, proton-conducting electrolytes. Fundamental synaptic functions, such as an excitatory postsynaptic current, paired-pulse facilitation, and a dynamic filter for information transmission of biological synapses, are successfully emulated. Moreover, spiking-dependent logic operation/modulation, multiplicative neural coding, and neuronal gain modulation are also demonstrated in such MoS 2 neuro-morphic devices. Neuromorphic Devices ___________________1700933 2D MoS 2 Neuromorphic Devices for Brain-Like Computational Systems Combo cancer killer: Antibody-coated and highly porous silicon-based nano-carriers can actively target and selectively deliver multiple therapeutics for the combination of chemotherapy and hyperthermia. This synergistic treatment can maximize targeted cytotoxicity at the lowest possible doses.

A new class of highly efficient oxygen evolution catalysts has been synthesized through the self-assembly of graphitic carbon nitride nanosheets and carbon nanotubes, driven by π-π stacking and electrostatic interactions. Remarkably, the catalysts exhibit higher catalytic oxygen evolution activity and stronger durability than Ir-based noble-metal catalysts and display the best performance among the reported nonmetal catalysts. This good result is attributed to the high nitrogen content and the efficient mass and charge transfer in the porous three-dimensional nanostructure.

pH-Responsive polymers are systems whose solubility, volume, and chain conformation can be manipulated by changes in pH, co-solvent, and electrolytes. This review summarizes recent developments covering synthesis, physicochemical properties, and applications in various disciplines. A variety of synthetic methodologies comprising of emulsion polymerization and living radical polymerization techniques are described, and some of their salient features are highlighted. Several polymeric systems, such as homopolymers, block copolymers, microgels, hydrogels and polymer brushes at interfaces are reviewed, where important characteristics that govern their behavior in solutions are described. Potential applications of these systems in controlled drug delivery, personal and home care, industrial coatings, biological and membrane science, viscosity modifiers, colloid stabilization, and water remediation, are discussed.