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Recently Published Articles

  1. Peptide-like Polymers Exerting Effective Glioma-Targeted siRNA Delivery and Release for Therapeutic Application

    Sai An, Dongsheng He, Ernst Wagner and Chen Jiang

    Article first published online: 28 JUL 2015 | DOI: 10.1002/smll.201501167

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    Peptide-like polymer/small interfering RNA (siRNA) complexes with disulfide bond crosslinking show a compact spherical appearance, a stable circulation in blood, and rapid siRNA release under high glutathione (GSH) concentration in glioma cells. For polyetherimide (PEI)/siRNA complexes, the compact spherical appearance is both stable in blood and glioma cells, which greatly decreases the release of siRNA for efficient therapeutic applications.

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    Conductive-AFM Patterning of Organic Semiconductors

    Benjamin P. Brown, Loren Picco, Mervyn J. Miles and Charl F. J. Faul

    Article first published online: 28 JUL 2015 | DOI: 10.1002/smll.201501779

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    Using a conductive atomic force microscope (c-AFM) redox-writing technique, it is shown that it is possible to locally, and reversibly, pattern conducting, and nonconducting features on the surface of a low molecular weight aniline-based organic (semi)-conductor thin film using a commercial c-AFM. It is shown that application of a voltage between the tip and sample causes localized redox reactions at the surface without damage.

  3. An Aqueous Single Reactor Arc Discharge Process for the Synthesis of Graphene Nanospheres

    Sejung Kim, Youngjun Song, Tsukasa Takahashi, Taeseok Oh and Michael J. Heller

    Article first published online: 28 JUL 2015 | DOI: 10.1002/smll.201501022

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    Using an aqueous single reactor arc discharge process with oil-in-water emulsions allows production of 2D multilayered graphenes (MLGs and 3D graphene-based crumpled/sphere-like particles with low levels of defects). The confinement forces to create 3D particles from 2D MLGs are estimated to be 2.5 μN for crumpled particles and 70 μN for spherical hollow particles.

  4. Surface Conductive Graphene-Wrapped Micromotors Exhibiting Enhanced Motion

    Xing Ma, Jaideep Katuri, Yongfei Zeng, Yanli Zhao and Samuel Sanchez

    Article first published online: 20 JUL 2015 | DOI: 10.1002/smll.201501223

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    Surface-conductive Janus spherical motors are fabricated by wrapping silica particles with reduced graphene oxide capped with a thin Pt layer. These motors exhibit a 100% enhanced velocity as compared to standard SiO2–Pt motors. Furthermore, the versatility of graphene may open up possibilities for a diverse range of applications from active drug delivery systems to water remediation.

  5. 2D MoS2 PDMS Nanocomposites for NO2 Separation

    Kyle J. Berean, Jian Zhen Ou, Torben Daeneke, Benjamin J. Carey, Emily P. Nguyen, Yichao Wang, Salvy P. Russo, Richard B. Kaner and Kourosh Kalantar-zadeh

    Article first published online: 20 JUL 2015 | DOI: 10.1002/smll.201501129

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    At a relatively low loading concentration (≈0.02 wt%) of 2D MoS2flakes in PDMS, the composite membrane is able to almost completely block the permeation of NO2 gas molecules at ppm levels. This major reduction is ascribed to the strong physisorption of NO2 gas molecules onto the 2D MoS2 flake basal planes.

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