Small

Cover image for Vol. 10 Issue 7

April 9, 2014

Volume 10, Issue 7

Pages 1233–1437

  1. Cover Picture

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Back Cover
    5. Masthead
    6. Contents
    7. Highlights
    8. Communications
    9. Frontispiece
    10. Full Papers
    1. You have free access to this content
      Self-Assembly: Self-Assembly of Metalloporphyrins into Light-Harvesting Peptide Nanofiber Hydrogels for Solar Water Oxidation (Small 7/2014) (page 1233)

      Jae Hong Kim, Dong Heon Nam, Yang Woo Lee, Yoon Sung Nam and Chan Beum Park

      Article first published online: 2 APR 2014 | DOI: 10.1002/smll.201470038

      Thumbnail image of graphical abstract

      On page 1272, Y. S. Nam, C. B. Park, and co-workers report a unique approach that applies peptide-based self-assembly to the design of nanoscale scaffolds for synthetic pigments towards artificial photosynthesis. A self-assembled nanostructure of Fmocdiphenylalanine is utilized as a biomimetic template to assemble metalloporphyrins into efficient light-harvesting antennae. The metalloporphyrins in the light-harvesting hydrogel increase the efficiency of photocatalytic water oxidation by iridium oxide nanoparticles up to approximately 3.7 times compared to their physical mixture.

  2. Inside Front Cover

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Back Cover
    5. Masthead
    6. Contents
    7. Highlights
    8. Communications
    9. Frontispiece
    10. Full Papers
    1. Lithography: Hybrid Helical Magnetic Microrobots Obtained by 3D Template-Assisted Electrodeposition (Small 7/2014) (page 1234)

      Muhammad A. Zeeshan, Roman Grisch, Eva Pellicer, Kartik M. Sivaraman, Kathrin E. Peyer, Jordi Sort, Berna Özkale, Mahmut S. Sakar, Bradley J. Nelson and Salvador Pané

      Article first published online: 2 APR 2014 | DOI: 10.1002/smll.201470039

      Thumbnail image of graphical abstract

      Hybrid artificial flagella (h-ABF) consisting of a ferromagnetic alloy head and a helical polymer tail can be fabricated by sequential electrodeposition of a cobalt-nickel alloy and polypyrrole inside a photoresist template patterned by 3D laser lithography. As M. A. Zeeshan, S. Pané, and co-workers report on page 1284, the h-ABFs are physically stable in an aqueous environment with a rigid connection between the metallic and the polymer segments. Controlled actuation of the microrobots by a rotating magnetic field is demonstrated in a fluidic environment with a focus on swarm control.

  3. Back Cover

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Back Cover
    5. Masthead
    6. Contents
    7. Highlights
    8. Communications
    9. Frontispiece
    10. Full Papers
    1. Encoded Particles: Fluorescence-Encoded Gold Nanoparticles: Library Design and Modulation of Cellular Uptake into Dendritic Cells (Small 7/2014) (page 1440)

      Laura Rodriguez-Lorenzo, Kleanthis Fytianos, Fabian Blank, Christophe von Garnier, Barbara Rothen-Rutishauser and Alke Petri-Fink

      Article first published online: 2 APR 2014 | DOI: 10.1002/smll.201470043

      Thumbnail image of graphical abstract

      Identification of parameters that modulate the cellular uptake into human dendritic cells in vitro is investigated through the fabrication of homo- (green spheres in the image) and hetero- (blue spheres) functional fluorescence encoded gold nanoparticles. As reported by L. Rodriguez-Lorenzo, A. Petri-Fink, and co-workers on page 1341, the chemical modification of nanoparticle surfaces, for instance by attaching fluorescent dyes, can conceal fundamental particle properties and modulate cellular uptake.

  4. Masthead

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Back Cover
    5. Masthead
    6. Contents
    7. Highlights
    8. Communications
    9. Frontispiece
    10. Full Papers
    1. Masthead: (Small 7/2014)

      Article first published online: 2 APR 2014 | DOI: 10.1002/smll.201470042

  5. Contents

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Back Cover
    5. Masthead
    6. Contents
    7. Highlights
    8. Communications
    9. Frontispiece
    10. Full Papers
    1. Contents: (Small 7/2014) (pages 1235–1242)

      Article first published online: 2 APR 2014 | DOI: 10.1002/smll.201470040

  6. Highlights

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Back Cover
    5. Masthead
    6. Contents
    7. Highlights
    8. Communications
    9. Frontispiece
    10. Full Papers
    1. The Quest for Photocatalytic Systems with Broadband Solar Absorption (pages 1243–1244)

      Sanyang Han and Xiaogang Liu

      Article first published online: 28 NOV 2013 | DOI: 10.1002/smll.201302897

      Thumbnail image of graphical abstract

      Composite heteronanostructures hold promise for high photocatalytic efficiency for water splitting and the degradation of organic pollutants. However, their photocatalytic activity under broadband excitation has been challenging, until now.

  7. Communications

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Back Cover
    5. Masthead
    6. Contents
    7. Highlights
    8. Communications
    9. Frontispiece
    10. Full Papers
    1. Fe5C2 Nanoparticles with High MRI Contrast Enhancement for Tumor Imaging (pages 1245–1249)

      Wei Tang, Zipeng Zhen, Ce Yang, Luning Wang, Taku Cowger, Hongmin Chen, Trever Todd, Khan Hekmatyar, Qun Zhao, Yanglong Hou and Jin Xie

      Article first published online: 18 DEC 2013 | DOI: 10.1002/smll.201303263

      Thumbnail image of graphical abstract

      An ancient material for magnetic resonance (MR) imaging: For the first time, Fe5C2 is prepared as colloidal stable nanoparticles with good aqueous stability. The nanoparticles boast strong magnetization, excellent chemical inertness, low toxicity, and one of the highest r2 relaxivities reported to date. These nanoparticles hold great potential in MR imaging as well as in other biomedical areas.

    2. Polyarginine Induces an Antitumor Immune Response through Binding to Toll-Like Receptor 4 (pages 1250–1254)

      Yong Yang, Joy Wolfram, Xiaohong Fang, Haifa Shen and Mauro Ferrari

      Article first published online: 10 DEC 2013 | DOI: 10.1002/smll.201302887

      Thumbnail image of graphical abstract

      A novel function of polyarginine as an activator of the immune system is reported. Single-molecule fluorescence imaging and single-molecule force measurements demonstrate that polyarginine binds specifically to the toll-like receptor 4 (TLR4), inducing receptor dimerization and activation. Moreover, polyarginine induced immune activation inhibits tumor growth. These results suggest the potential use of polyarginine for cancer immunotherapy.

    3. Nanoneedle-Assisted Delivery of Site-Selective Peptide-Functionalized DNA Nanocages for Targeting Mitochondria and Nuclei (pages 1255–1260)

      Miu Shan Chan and Pik Kwan Lo

      Article first published online: 10 DEC 2013 | DOI: 10.1002/smll.201302993

      Thumbnail image of graphical abstract

      Peptide-functionalized DNA nano-objects selectively target mitochondria and the nucleus by means of nanoneedle-assisted delivery. This technology preserves the cell viability and structural integrity of nanostructures and assists the nano-objects in escaping degradation by endocytosis. This method opens up a new avenue for further in vitro studies of intracellular behaviors of DNA assemblies and their interactions in specific organelles.

    4. Self-Reporting Liposomes for Intracellular Drug Release (pages 1261–1265)

      Wansong Chen, Qiyu Huang, Weizhu Ou, Yuanqiang Hao, Liqiang Wang, Ke Zeng, Hongyan Guo, Juan Li and You-Nian Liu

      Article first published online: 27 NOV 2013 | DOI: 10.1002/smll.201302698

      Thumbnail image of graphical abstract

      A new liposomal carrier embedded with a ratiometric fluorescent probe PNO is prepared. The integrated liposomes (PNO-LIPs) exhibit blue fluorescence in serum. Triggered by the thiols exogenously or endogenously, PNO-LIPs collapse with a burst drug release and a concurrent fluorescence change from blue to green. Furthermore, DOX-loaded PNO-LIPs improve the intracellular drug bioavailability.

    5. All-Elastomeric, Strain-Responsive Thermochromic Color Indicators (pages 1266–1271)

      Cunjiang Yu, Yihui Zhang, Dongkai Cheng, Xuetong Li, Yonggang Huang and John A. Rogers

      Article first published online: 27 NOV 2013 | DOI: 10.1002/smll.201302646

      Thumbnail image of graphical abstract

      Simple, low power, fully elastic, low modulus, stretchable thermochromic reflective color displays/indicators that are able to function under large strain deformation, are realized by combining thermochromic elastomers with molded traces of conductive elastomers. Detailed experimental and theoretical studies reveal the key materials, mechanics, thermal and optical properties. The results demonstrate the ability to exploit strain induced changes in resistance of the conductive elastomers in a colorimetric strain sensor.

    6. Self-Assembly of Metalloporphyrins into Light-Harvesting Peptide Nanofiber Hydrogels for Solar Water Oxidation (pages 1272–1277)

      Jae Hong Kim, Dong Heon Nam, Yang Woo Lee, Yoon Sung Nam and Chan Beum Park

      Article first published online: 8 NOV 2013 | DOI: 10.1002/smll.201302627

      Thumbnail image of graphical abstract

      Artificial light-harvesting nanofiber hydrogels are successfully synthesized by the self-assembly of Fmoc-FF peptides and metalloporphyrins. The metalloporphyrins are placed in close enough proximity to each other to enable excited energy transfer, increasing the photosensitization efficiency, as observed in natural light-harvesting complexes in green plants. The metalloporphyrins in the light-harvesting hydrogel increase the efficiency of photocatalytic water oxidation by iridium oxide nanoparticles up to approximately 3.7 times compared to their physical mixture.

    7. Highly Efficient Top-Illuminated Flexible Polymer Solar Cells with a Nanopatterned 3D Microresonant Cavity (pages 1278–1283)

      Cheng Jin An, Changsoon Cho, Jong Kil Choi, Jong-Min Park, Ming Liang Jin, Jung-Yong Lee and Hee-Tae Jung

      Article first published online: 28 NOV 2013 | DOI: 10.1002/smll.201302653

      Thumbnail image of graphical abstract

      Top-illuminated flexible polymer solar cells with 3D micoresonant cavity provide not only powerful light-trapping but also electrical enhancement, resulting in significant enhancement of power efficiency (26.4%). Capping layer (CL) enhanced the transmittance of the transparent electrodes, increasing electric field intensity in the photoactive layer by forming microresonant cavity, and the nano-pattern on the rear electrodes caused significant enhancement to the Jsc by improving light absorption and charge collection.

    8. Hybrid Helical Magnetic Microrobots Obtained by 3D Template-Assisted Electrodeposition (pages 1284–1288)

      Muhammad A. Zeeshan, Roman Grisch, Eva Pellicer, Kartik M. Sivaraman, Kathrin E. Peyer, Jordi Sort, Berna Özkale, Mahmut S. Sakar, Bradley J. Nelson and Salvador Pané

      Article first published online: 13 DEC 2013 | DOI: 10.1002/smll.201302856

      Thumbnail image of graphical abstract

      Hybrid helical magnetic microrobots are achieved by sequential electrodeposition of a CoNi alloy and PPy inside a photoresist template patterned by 3D laser lithography. A controlled actuation of the microrobots by a rotating magnetic field is demonstrated in a fluidic environment.

    9. Au–Thiol Interaction Chemistry to Influence the Structural Transformation of Semiconductor Nanocrystals and Formation of Giant Nanostructures (pages 1289–1293)

      Riya Bose, Goutam Manna and Narayan Pradhan

      Article first published online: 13 DEC 2013 | DOI: 10.1002/smll.201303233

      Thumbnail image of graphical abstract

      Giant nanostructures which are difficult to design by the classical growth process can be fabricated in a facilitated and well programmed surface ligand removal protocol employing the thiol-gold strong interaction chemistry. When thiol capped small ZnSe seed nanocrystals are treated with amine capped gold particles, gold snatches the thiol ligands from ZnSe and forces them to agglomerate leading to the giant crystalline ZnSe nanostructures

    10. All-Oxide Raman-Active Traps for Light and Matter: Probing Redox Homeostasis Model Reactions in Aqueous Environment (pages 1294–1298)

      Ivano Alessandri and L. E. Depero

      Article first published online: 9 DEC 2013 | DOI: 10.1002/smll.201303166

      Thumbnail image of graphical abstract

      Core–shell colloidal crystals can act as very efficient traps for light and analytes. Here it is shown that Raman-active probes can be achieved using SiO2–TiO2 core–shell beads. These systems are successfully tested in monitoring of glutathione redox cycle at physiological concentration in aqueous environment, without need of any interfering enhancers. These materials represent a promising alternative to conventional, metal-based SERS probes for investigating chemical and biochemical reactions under real working conditions.

  8. Frontispiece

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Back Cover
    5. Masthead
    6. Contents
    7. Highlights
    8. Communications
    9. Frontispiece
    10. Full Papers
    1. Quantum Dots: Bandgap Tuning by Using a Lattice Distortion Induced by Two Symmetries That Coexist in a Quantum Dot (Small 7/2014) (page 1299)

      Eui-Hyun Kong, Yong-June Chang, Hyun-Jin Park and Hyun M. Jang

      Article first published online: 2 APR 2014 | DOI: 10.1002/smll.201470041

      Thumbnail image of graphical abstract

      A novel way to tune the bandgap in an Ag2S quantum dot (QD) system is developed by inducing a lattice-distorted region of ≈1-nm scale in a QD with rapid quenching. Accordingly, the bandgap can be controlled simply by tailoring the degree of the lattice-distortion in a QD (2.51 to 1.64 eV). As reported by H. M. Jang and co-workers on page 1300, this conceptual method can pave a new way to realize quantum effects in future QD-based applications.

  9. Full Papers

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Back Cover
    5. Masthead
    6. Contents
    7. Highlights
    8. Communications
    9. Frontispiece
    10. Full Papers
    1. Bandgap Tuning by Using a Lattice Distortion Induced by Two Symmetries That Coexist in a Quantum Dot (pages 1300–1307)

      Eui-Hyun Kong, Yong-June Chang, Hyun-Jin Park and Hyun M. Jang

      Article first published online: 20 OCT 2013 | DOI: 10.1002/smll.201303040

      Thumbnail image of graphical abstract

      Two distinct crystalline phases of Ag2S and Ag that coexist with a lattice-distorted region are experimentally demonstrated in a quantum dot (QD). A new approach to bandgap tuning (2.51 to 1.64 eV) and enhancing optical properties is presented by suitably tailoring the degree of the lattice-distorted region within the QD.

    2. A Novel Opal Closest-Packing Photonic Crystal for Naked-Eye Glucose Detection (pages 1308–1313)

      Xiaodi Hong, Yuan Peng, Jialei Bai, Baoan Ning, Yuanyuan Liu, Zhijiang Zhou and Zhixian Gao

      Article first published online: 25 OCT 2013 | DOI: 10.1002/smll.201302788

      Thumbnail image of graphical abstract

      A novel opal closest-packing (OCP) photonic crystal (PC) is fabricated by self-assembly with a new type of microsphere polymerized by co-monomers. When glucose is added, this PC displays a red-shift, reduced intensity and a structural color change, which are caused by the swelling of the PC structure. These characteristics demonstrate that the proposed PC can be used in naked eye detection.

    3. Biocatalytic Polymer Coatings: On-Demand Drug Synthesis and Localized Therapeutic Effect under Dynamic Cell Culture Conditions (pages 1314–1324)

      Betina Fejerskov, Najah B. S. Jensen, Boon M. Teo, Brigitte Städler and Alexander N. Zelikin

      Article first published online: 21 DEC 2013 | DOI: 10.1002/smll.201303101

      Thumbnail image of graphical abstract

      Biocatalytic surface coatings are developed to perform localized synthesis of drugs and afford site-specific delivery of therapeutics to adhering cells. This is achieved using an enzyme immobilized within the multilayered polymer coatings to accomplish enzyme-prodrug therapy (EPT). Under flow conditions, EPT affords an on-demand synthesis of the drugs, at the time desired and in a controllable amount to suit particular applications.

    4. Au Dotted Magnetic Network Nanostructure and Its Application for On-Site Monitoring Femtomolar Level Pesticide (pages 1325–1331)

      Tianxi Yang, Xiaoyu Guo, Hui Wang, Shuyue Fu, Jie Yu, Ying Wen and Haifeng Yang

      Article first published online: 16 OCT 2013 | DOI: 10.1002/smll.201302604

      Thumbnail image of graphical abstract

      A nanocomposite is prepared by Au nanoparticles dotted onto the surface of Fe3O4 magnetic network nanostructure with the help of an environmentally friendly reagent of inositol hexakisphosphate. The nanocomposite shows sufficient enrichment of chemical species, separation, and Raman analysis of femtomolar level pesticide residues by an external magnetic collection with a portable Raman system.

    5. Bridging the Gap in the Micellar Transformation from Cylinders to Vesicles (pages 1332–1340)

      Cuicui Liu, Lin Yao, Hong Wang, Zai Rong Phua, Xiaohui Song and Hongyu Chen

      Article first published online: 16 OCT 2013 | DOI: 10.1002/smll.201302837

      Thumbnail image of graphical abstract

      Micelles of polystyrene-block-poly(acrylic acid) (PS154-b-PAA49) are made to transform slowly, allowing continual trapping of various intermediates from cylinders to vesicles. The analysis of surface-to-volume ratio of the intermediates gives no obvious barrier in the micellar transformation. It is proposed that the kinetic barrier lies in the molecular reorganization in the micelles, which is not represented in the traditional analysis of static shapes.

    6. Fluorescence-Encoded Gold Nanoparticles: Library Design and Modulation of Cellular Uptake into Dendritic Cells (pages 1341–1350)

      Laura Rodriguez-Lorenzo, Kleanthis Fytianos, Fabian Blank, Christophe von Garnier, Barbara Rothen-Rutishauser and Alke Petri-Fink

      Article first published online: 30 JAN 2014 | DOI: 10.1002/smll.201302889

      Thumbnail image of graphical abstract

      The parameters that modulate the cellular uptake into human dendritic cells in vitro are identified through the fabrication of homo- and hetero-functional fluorescence encoded gold nanoparticles. This study shows how the addition of surface molecules (such as fluorescent dyes) can impact cellular uptake and how this issue can be overcome.

    7. A Difunctional Squarylium Indocyanine Dye Distinguishes Dead Cells through Diverse Staining of the Cell Nuclei/Membranes (pages 1351–1360)

      Jie Li, Kunru Guo, Jie Shen, Wantai Yang and Meizhen Yin

      Article first published online: 16 OCT 2013 | DOI: 10.1002/smll.201302920

      Thumbnail image of graphical abstract

      A water-soluble positively charged squarylium indocyanine dye exhibiting good photostability is synthesized. The difunctional dye selectively stains the cell nuclei in fixed cells/tissue and the cell membranes in live cells/tissue. The dye is further explored as a specific marker to detect apoptotic cells in live cells/tissue.

    8. Surface Supported Gold–Organic Hybrids: On-Surface Synthesis and Surface Directed Orientation (pages 1361–1368)

      Haiming Zhang, Jörn-Holger Franke, Dingyong Zhong, Yan Li, Alexander Timmer, Oscar Díaz Arado, Harry Mönig, Hong Wang, Lifeng Chi, Zhaohui Wang, Klaus Müllen and Harald Fuchs

      Article first published online: 13 NOV 2013 | DOI: 10.1002/smll.201303011

      Thumbnail image of graphical abstract

      Stable gold-organic hybrids can be prepared on single crystal gold surfaces via a surface assisted coupling reaction between chloro-substituted perylene-3,4,9,10-tetracarboxylic acid bisimides (PBIs) and surface gold atoms in an ultrahigh vacuum environment. Participation of surface gold atoms in the coupling reaction leads to the oriented alignment of the Au–PBI chains on reconstructed Au (100) surfaces.

    9. Interactions and Chemical Transformations of Coronene Inside and Outside Carbon Nanotubes (pages 1369–1378)

      Bea Botka, Melinda E. Füstös, Hajnalka M. Tóháti, Katalin Németh, Gyöngyi Klupp, Zsolt Szekrényes, Dorina Kocsis, Margita Utczás, Edit Székely, Tamás Váczi, György Tarczay, Rudi Hackl, Thomas W. Chamberlain, Andrei N. Khlobystov and Katalin Kamarás

      Article first published online: 27 OCT 2013 | DOI: 10.1002/smll.201302613

      Thumbnail image of graphical abstract

      Gas phase insertion of coronene in nanotubes yields various forms of adsorbed or encapsulated coronene or dicoronylene, while nano-extraction from supercritical carbon dioxide leads to stacks of intact coronene inside nanotubes, with no dicoronylene and no surface adsorbed molecules. The mechanism of transformation of aromatic guest-molecules to internal nanotubes via nanoribbon-like structures is followed by spectroscopy and transmission electron microscopy.

    10. Benzoboroxole-Functionalized Magnetic Core/Shell Microspheres for Highly Specific Enrichment of Glycoproteins under Physiological Conditions (pages 1379–1386)

      Yuting Zhang, Wanfu Ma, Dian Li, Meng Yu, Jia Guo and Changchun Wang

      Article first published online: 5 DEC 2013 | DOI: 10.1002/smll.201302841

      Thumbnail image of graphical abstract

      A novel approach has been designed to synthesize benzoboroxole-functionalized magnetic core/shell microspheres. These as-prepared micropsheres display high selectivity to glycoproteins without non-specific adsorption even in the E. coli lysate or FBS complex samples under physiological condition. This neutral enrichment condition is of great significance in directly enriching glycoproteins from real biological samples and holds great promise in the discovery of glycoproteins as potential biomarkers for clinical diagnoses.

    11. Hierarchical Hydrogen Bonds Directed Multi-Functional Carbon Nanotube-Based Supramolecular Hydrogels (pages 1387–1393)

      Ran Du, Juanxia Wu, Liang Chen, Huan Huang, Xuetong Zhang and Jin Zhang

      Article first published online: 16 OCT 2013 | DOI: 10.1002/smll.201302649

      Thumbnail image of graphical abstract

      Carbon nanotube-based multiple responsive (thermal, pH, NIR light) supramolecular hydrogels with extraordinary self-healing performance and interesting adhesion behavior are prepared via simple mixing aqueous solution of carboxylic carbon nanotubes and polyethylene polyamine, and the ratio of strong hydrogen bonds to weak ones in hydrogel could be finely tuned by controlling the relative content of two precursors.

    12. Controlled Synthesis of Kinked Ultrathin ZnS Nanorods/Nanowires Triggered by Chloride Ions: A Case Study (pages 1394–1402)

      Tao-Tao Zhuang, Pan Yu, Feng-Jia Fan, Liang Wu, Xiao-Jing Liu and Shu-Hong Yu

      Article first published online: 18 NOV 2013 | DOI: 10.1002/smll.201302656

      Thumbnail image of graphical abstract

      1D kinked ultrathin ZnS nanorods/nanowires: The colloidal synthesis of kinked ultrathin ZnS nanorods/nanowires is reported with mixed phases using chloride ions as additives and tiny Ag2S nanocrystals as catalysts. These well-defined kinked nanostructures can provide a model of crystal growth control and offer more opportunities to fabricate nanodevices with special functions.

    13. An Intelligent Nanotheranostic Agent for Targeting, Redox-Responsive Ultrasound Imaging, and Imaging-Guided High-Intensity Focused Ultrasound Synergistic Therapy (pages 1403–1411)

      Xia Wang, Hangrong Chen, Kun Zhang, Ming Ma, Faqi Li, Deping Zeng, Shuguang Zheng, Yu Chen, Lixin Jiang, Huixiong Xu and Jianlin Shi

      Article first published online: 29 NOV 2013 | DOI: 10.1002/smll.201302846

      Thumbnail image of graphical abstract

      Can a nanosized agent efficiently respond to ultrasound? A multifunctional redox-responsive complex decorated, ultrasound sensitive PFH encapsulated nanotheranostic agent has been successfully constructed, which can be activated by the internal reducing environment and the external HIFU stimulus to enable tailored ultrasound guided synergistic HIFU therapy duo to its redox-responsive ultrasound imaging and PFH bubble cavitations/thermal effects.

    14. Anisotropic Particles from a One-Pot Double Emulsion Induced by Partial Wetting and Their Triggered Release (pages 1412–1420)

      Xiaopeng Huang, Qiuping Qian and Yapei Wang

      Article first published online: 29 OCT 2013 | DOI: 10.1002/smll.201302743

      Thumbnail image of graphical abstract

      Controlled phase separation is rarely appeared in the conventional double emulsion. In this study, a partial wetting theory is well established to instruct us to manipulate the phase separation process for the formation of sorts of well-defined anisotropic particles.

    15. Powder, Paper and Foam of Few-Layer Graphene Prepared in High Yield by Electrochemical Intercalation Exfoliation of Expanded Graphite (pages 1421–1429)

      Liqiong Wu, Weiwei Li, Peng Li, Shutian Liao, Shengqiang Qiu, Mingliang Chen, Yufen Guo, Qi Li, Chao Zhu and Liwei Liu

      Article first published online: 9 DEC 2013 | DOI: 10.1002/smll.201302730

      Thumbnail image of graphical abstract

      High-yield preparation of graphene is important for its wide applications; however, it is still a challenging task. A facile and high-yield approach is demonstrated to prepare few layer graphene by electrochemical intercalation exfoliation of expanded graphite using stage-1 H2SO4-graphite intercalation compound as a key intermediate. Freestanding graphene papers with excellent conductivity and light-weight graphene foams are fabricated from the electrochemical exfoliated graphene sheets.

    16. The Role of Etching in the Formation of Ag Nanoplates with Straight, Curved and Wavy Edges and Comparison of Their SERS Properties (pages 1430–1437)

      Yin Yang, Xiao-Lan Zhong, Qiang Zhang, Logan G. Blackstad, Zheng-Wen Fu, Zhi-Yuan Li and Dong Qin

      Article first published online: 13 DEC 2013 | DOI: 10.1002/smll.201302877

      Thumbnail image of graphical abstract

      Oxidative etching plays an essential role in the hydrothermal reduction of AgNO3 by poly(vinyl pyrrolidone) for the generation of Ag triangular plates with straight edges. Selective etching at the corners and on the side edges of triangular nanoplates with straight edges in DI water and ethanol, respectively, resulted in the formation of enneahedral plates with curved and wavy edges. The nanoplates with wavy edges and sharp corners exhibited the strongest SERS

SEARCH

SEARCH BY CITATION