Advanced Functional Materials

Cover image for Vol. 19 Issue 21

November 9, 2009

Volume 19, Issue 21

Pages 3349–3506

  1. Cover Picture

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Contents
    5. Feature Article
    6. Frontispiece
    7. Full Papers
    8. Corrections
    1. Tissue Repair: Wet-Spun Biodegradable Fibers on Conducting Platforms: Novel Architectures for Muscle Regeneration (Adv. Funct. Mater. 21/2009)

      Joselito M. Razal, Magdalena Kita, Anita F. Quigley, Elizabeth Kennedy, Simon E. Moulton, Robert M. I. Kapsa, Graeme M. Clark and Gordon G. Wallace

      Article first published online: 30 OCT 2009 | DOI: 10.1002/adfm.200990094

      Thumbnail image of graphical abstract

      Bio-synthetic platforms, consisting of a conducting polymer substrate overlaid with aligned biodegradable fibers promote the linear growth (ex vivo) of partially differentiated muscle fibers, consistent with the structural requirements of skeletal muscle in vivo, as described by J. M. Razal et al. on page 3381. The conducting surface facilitates development of electrical stimulation paradigms for optimizing muscle growth and development ex vivo that may potentially be applied to repair diseased or damaged muscle.

  2. Inside Front Cover

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Contents
    5. Feature Article
    6. Frontispiece
    7. Full Papers
    8. Corrections
    1. Protein Immobilization: Capturing Complex Protein Gradients on Biomimetic Hydrogels for Cell-Based Assays (Adv. Funct. Mater. 21/2009)

      Steffen Cosson, Stefan A. Kobel and Matthias P. Lutolf

      Article first published online: 30 OCT 2009 | DOI: 10.1002/adfm.200990095

      Thumbnail image of graphical abstract

      A versatile microfluidic strategy to rapidly and selectively immobilize gradients of virtually any desired protein on soft poly(ethylene glycol) (PEG) hydrogel surfaces is developed by S. Cosson et al. on page 3411. The selectivity and orthogonality of the chosen protein immobilization schemes allows for forming parallel and orthogonal overlapping gradients of multiple proteins. This platform can be exploited to perform a wealth of cell-based assays on biomimetic surfaces.

  3. Contents

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Contents
    5. Feature Article
    6. Frontispiece
    7. Full Papers
    8. Corrections
    1. Contents: (Adv. Funct. Mater. 21/2009) (pages 3349–3355)

      Article first published online: 30 OCT 2009 | DOI: 10.1002/adfm.200990096

  4. Feature Article

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Contents
    5. Feature Article
    6. Frontispiece
    7. Full Papers
    8. Corrections
    1. Integrated Multifunctional Nanosystems for Medical Diagnosis and Treatment (pages 3356–3373)

      Donglu Shi

      Article first published online: 9 OCT 2009 | DOI: 10.1002/adfm.200901539

      Thumbnail image of graphical abstract

      For simultaneous cancer diagnosis and treatment, an integrated multifunctional nanosystem has the intelligent capability of releasing anti-cancer drug from its hollow interior and outer surface by controlling environmental temperature and pH values. The outer surface of the nanocarrier is conjugated with tumor specific ligand, fluorescent materials, and super paramagnetic nanoparticles for cell targeting, in vivo imaging, and hyperthermia cancer therapy.

  5. Frontispiece

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Contents
    5. Feature Article
    6. Frontispiece
    7. Full Papers
    8. Corrections
    1. Fluorescent Imaging: Surface Modification of Exfoliated Layered Gadolinium Hydroxide for the Development of Multimodal Contrast Agents for MRI and Fluorescence Imaging (Adv. Funct. Mater. 21/2009)

      Young-su Yoon, Byung-Il Lee, Kyung Sig Lee, Geun Ho Im, Song-Ho Byeon, Jung Hee Lee and In Su Lee

      Article first published online: 30 OCT 2009 | DOI: 10.1002/adfm.200990097

      Thumbnail image of graphical abstract

      The synthesis of a new stable colloid of fluorescent LGdH layers through a newly developed surface modification method is reported by Y.-S. Yoon et al. on page 3375. This new method involves layer exfoliation, anion exchange, and PEG coating. The efficient MRI contrast-enhancement of these LGdH layers, both in vitro and in vivo, demonstrates their potential utility as a multimodal probe combining optical and MR imaging.

  6. Full Papers

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Contents
    5. Feature Article
    6. Frontispiece
    7. Full Papers
    8. Corrections
    1. Surface Modification of Exfoliated Layered Gadolinium Hydroxide for the Development of Multimodal Contrast Agents for MRI and Fluorescence Imaging (pages 3375–3380)

      Young-su Yoon, Byung-Il Lee, Kyung Sig Lee, Geun Ho Im, Song-Ho Byeon, Jung Hee Lee and In Su Lee

      Article first published online: 9 SEP 2009 | DOI: 10.1002/adfm.200901051

      Thumbnail image of graphical abstract

      A stable colloid of fluorescent layered gadolinium hydroxide (LGdH) is synthesized using the newly developed surface modification method comprising the following steps: layer exfoliation, anion exchange, and coating with polyethyleneglycol. The efficient contrast-enhancement of modified LGdH in in-vitro and in-vivo magnetic resonance imaging demonstrates their potential utility as a multimodal probe combining optical and magnetic resonance imaging.

    2. Wet-Spun Biodegradable Fibers on Conducting Platforms: Novel Architectures for Muscle Regeneration (pages 3381–3388)

      Joselito M. Razal, Magdalena Kita, Anita F. Quigley, Elizabeth Kennedy, Simon E. Moulton, Robert M. I. Kapsa, Graeme M. Clark and Gordon G. Wallace

      Article first published online: 16 SEP 2009 | DOI: 10.1002/adfm.200900464

      Thumbnail image of graphical abstract

      Novel biosynthetic platforms supporting ex vivo growth of partially differentiated muscle cells in an aligned linear orientation that is consistent with the structural requirements of muscle tissue are described. These platforms allow differentiation of long multinucleated myotubes from adherent myoblasts, which align longitudinally to the fiber axis to form linear cell-seeded biosynthetic fiber constructs.

    3. Self-Organization of a Highly Integrated Silicon Nanowire Network on a Si(110)–16 × 2 Surface by Controlling Domain Growth (pages 3389–3395)

      Ie-Hong Hong, Yen-Chieh Liao and Shang-Chieh Yen

      Article first published online: 1 OCT 2009 | DOI: 10.1002/adfm.200900974

      Thumbnail image of graphical abstract

      An ultrahigh-density silicon-nanowire network is self-organized on Si(110)–16 × 2 surface by controlling the domain growth of two non-orthogonal 16 × 2 superstructures (see figure). This novel bottom-up approach provides a simple and efficient nanofabrication of highly-integrated silicon-nanowire crossbar circuits. Such ultra-dense silicon-nanowire mesh can serve as a versatile nanotemplate for nanointegration of metal-silicide or molecular crossbar nanomeshes for a broad range of device applications.

    4. A Multifunctional Nanodevice Capable of Imaging, Magnetically Controlling, and In Situ Monitoring Drug Release (pages 3396–3403)

      Shang-Hsiu Hu, Kuan-Ting Kuo, Wei-Lin Tung, Dean-Mo Liu and San-Yuan Chen

      Article first published online: 6 OCT 2009 | DOI: 10.1002/adfm.200900465

      Thumbnail image of graphical abstract

      The multifuctional nanodevice described here integrates imaging on the nanoscale, targeting, and controlled drug delivery, as well as the capability to monitor the amount of drug released. The quantum dot bonded to the nanodevice provides optical information for in situ monitoring of the drug release through use of a magnetic field (see figure).

    5. Solid-State NMR Investigations of the Unusual Effects Resulting from the Nanoconfinement of Water within Amphiphilic Crosslinked Polymer Networks (pages 3404–3410)

      Ryutaro Ohashi, Jeremy W. Bartels, Jinqi Xu, Karen L. Wooley and Jacob Schaefer

      Article first published online: 24 SEP 2009 | DOI: 10.1002/adfm.200900846

      Thumbnail image of graphical abstract

      Solid-state 19F NMR experiments are used to characterize phase-separated HBFP–PEG crosslinked networks, detecting mobile, rigid, and interfacial domains. The results show unambiguously that composition-dependent PEG inclusions in the HBFP glass rigidify on hydration, consistent with an increase in macroscopic tensile strength.

    6. Capturing Complex Protein Gradients on Biomimetic Hydrogels for Cell-Based Assays (pages 3411–3419)

      Steffen Cosson, Stefan A. Kobel and Matthias P. Lutolf

      Article first published online: 30 SEP 2009 | DOI: 10.1002/adfm.200900968

      Thumbnail image of graphical abstract

      Soft poly(ethylene glycol)-based hydrogel surfaces are engineered to rapidly capture complex overlapping gradients of virtually any desired protein. Exposure of NeutrAvidin- and ProteinA-functionalized gels to biotinylated and Fc-tagged fusion proteins results in site-selective and stable protein immobilization from solution. This platform can be exploited for various cell-based assays as demonstrated here by concentration-dependent single-cell-migration behavior on fibronectin gradients.

    7. Design and Synthesis of Hierarchical Nanowire Composites for Electrochemical Energy Storage (pages 3420–3426)

      Zheng Chen, Yaochun Qin, Ding Weng, Qiangfeng Xiao, Yiting Peng, Xiaolei Wang, Hexing Li, Fei Wei and Yunfeng Lu

      Article first published online: 28 SEP 2009 | DOI: 10.1002/adfm.200900971

      Thumbnail image of graphical abstract

      Hierarchical fibrous nanocomposite electrodes: a novel class of fibrous composites with hierarchical pores is synthesized by confined growth of V2O5 nanowires within a conductive porous CNT scaffold. Such a unique structure and composition endows the composites with high electrochemical capacitance and excellent rate performance, opening a new avenue for a large spectrum of device applications.

    8. Transistor Paint: Environmentally Stable N-alkyldithienopyrrole and Bithiazole-Based Copolymer Thin-Film Transistors Show Reproducible High Mobilities without Annealing (pages 3427–3434)

      Junying Liu, Rui Zhang, Itaru Osaka, Sarada Mishra, Anna E. Javier, Detlef-M. Smilgies, Tomasz Kowalewski and Richard D. McCullough

      Article first published online: 23 SEP 2009 | DOI: 10.1002/adfm.200900926

      Thumbnail image of graphical abstract

      New solution processable 4-(2-hexyldecan)-4H-bisthieno[2,3-d:3′,2′-b]pyrrole and 4,4′-dialkyl-2,2′-bithiazole-based copolymers (PBTzDTPs) are synthesized with excellent FET performance. The thin-film transistors fabricated from PBTzDTPs achieve average hole mobilities of 0.1 cm2 V−1 s−1 with current on/off ratios up to 106 without thermal annealing. Furthermore, the devices exhibit stable performance in air, showing no significant degradation over 60 days.

    9. Perfluorinated Subphthalocyanine as a New Acceptor Material in a Small-Molecule Bilayer Organic Solar Cell (pages 3435–3439)

      Hans Gommans, Tom Aernouts, Bregt Verreet, Paul Heremans, Anaïs Medina, Christian G. Claessens and Tomas Torres

      Article first published online: 18 SEP 2009 | DOI: 10.1002/adfm.200900524

      Thumbnail image of graphical abstract

      Fluorinated subphthalocyanines (SubPcs) compounds (see figure), deposited by vacuum evaporation, are investigated in organic solar cells. As electron acceptors, these compounds have high absorption in the visible range of the solar spectrum, unlike the typical C60 material, and are studied in combination with related novel donor compounds. In particular combinations, open-circuit voltage values in excess of 900 mV are generated.

    10. Photoinduced Shuttling Dynamics of Rotaxanes in Viscous Polymer Solutions (pages 3440–3449)

      Dhiredj C. Jagesar, Sandro M. Fazio, Jimmy Taybi, Erika Eiser, Francesco G. Gatti, David A. Leigh and Albert M. Brouwer

      Article first published online: 30 SEP 2009 | DOI: 10.1002/adfm.200900668

      Thumbnail image of graphical abstract

      The dynamics of a rotaxane-based molecular shuttle in viscous polymer solutions of poly(methacrylonitrile) in acetonitrile and butyronitrile are described. The switching rates are found to be reduced only by one order of magnitude over a viscosity increase of four orders of magnitude.

    11. High-Density Periodically Ordered Magnetic Cobalt Ferrite Nanodot Arrays by Template-Assisted Pulsed Laser Deposition (pages 3450–3455)

      Xingsen Gao, Lifeng Liu, Balaji Birajdar, Michael Ziese, Woo Lee, Marin Alexe and Dietrich Hesse

      Article first published online: 31 AUG 2009 | DOI: 10.1002/adfm.200900422

      Thumbnail image of graphical abstract

      Well-ordered arrays of magnetic CoFe2O4 nanodots are synthesized by a nanopatterning method using pulsed laser deposition through an ultrathin anodic aluminium oxide membrane. This technique allows a wide-range adjustment of array periodicity and dot dimension, as well as epitaxial growth of the nanodots. The epitaxial dots demonstrate complex magnetic domains such as bubble and stripe domains.

    12. Archetype Cationic Iridium Complexes and Their Use in Solid-State Light-Emitting Electrochemical Cells (pages 3456–3463)

      Rubén D. Costa, Enrique Ortí, Henk J. Bolink, Stefan Graber, Silvia Schaffner, Markus Neuburger, Catherine E. Housecroft and Edwin C. Constable

      Article first published online: 23 SEP 2009 | DOI: 10.1002/adfm.200900911

      Thumbnail image of graphical abstract

      Simple but efficient materials: Two archetype cationic iridium complexes are extensively characterized and used as the primary active component in simple electroluminescent devices. The addition of small amounts of ionic liquid to the active layer significantly improves the device performance. This works shows that even with rather simple starting compounds promising electroluminescent devices can be prepared with thorough device optimization.

    13. Copper-Free Clickable Coatings (pages 3464–3470)

      Luiz A. Canalle, Sander S. van Berkel, Laurens T. de Haan and Jan C. M. van Hest

      Article first published online: 3 SEP 2009 | DOI: 10.1002/adfm.200900743

      Thumbnail image of graphical abstract

      The synthesis of a clickable coating for the immobilization of functional molecules based on an entire copper-free approach is described. Azide-functional coatings are prepared by thermal crosslinking of side-chain azide-functional polymers and dialkyne linkers. Different copper-free click reactions are used to functionalize the azide-containing surfaces with fluorescent probes, allowing qualitative comparison of the different click methodologies.

    14. Selective Angle Electroluminescence of Light-Emitting Diodes based on Nanostructured ZnO/GaN Heterojunctions (pages 3471–3475)

      Hang-Kuei Fu, Cheng-Liang Cheng, Chun-Hsiung Wang, Tai-Yuan Lin and Yang-Fang Chen

      Article first published online: 8 SEP 2009 | DOI: 10.1002/adfm.200900815

      Thumbnail image of graphical abstract

      LED devices based on heterojunctions of p-GaN/ZnO nanobottles possess a bright electroluminescence at 405 nm with a selective angle emission. With the geometry of the nanobottle waveguides, it is very easy to realize such a practical application. The discovery reported here therefore should be very useful for the future development of many unique optoelectronic devices.

    15. Synthesis and Thermoelectric Characterization of Bi2Te3 Nanoparticles (pages 3476–3483)

      Marcus Scheele, Niels Oeschler, Katrin Meier, Andreas Kornowski, Christian Klinke and Horst Weller

      Article first published online: 7 OCT 2009 | DOI: 10.1002/adfm.200901261

      Thumbnail image of graphical abstract

      Ligand-free, near-monodisperse, sub-10-nm Bi2Te3 nanoparticles are spark plasma sintered to macroscopic nanoparticle pellets and characterized in terms of their thermoelectric properties. Where the electric conductivity of such materials is almost bulk-like, the thermal conductivity is decreased by as much as one order of magnitude providing a material with phonon-glass electron-crystal properties.

    16. Phototunable Azobenzene Cholesteric Liquid Crystals with 2000 nm Range (pages 3484–3488)

      Timothy J. White, Rebecca L. Bricker, Lalgudi V. Natarajan, Nelson V. Tabiryan, Lisa Green, Quan Li and Timothy J. Bunning

      Article first published online: 17 SEP 2009 | DOI: 10.1002/adfm.200900396

      Thumbnail image of graphical abstract

      Phototuning of the reflection notch of a cholesteric liquid crystal (CLC) based on a bis(azo) axially chiral dopant (inset) is observed over a 2000 nm range spanning the visible, near-infrared, and short-wave infrared. The dark restoration of the original reflection notch is reduced from days to a few minutes by polymer stabilization of the CLC helix.

    17. Random Copolymer Films with Molecular-Scale Compositional Heterogeneities that Interfere with Protein Adsorption (pages 3489–3496)

      Salmaan H. Baxamusa and Karen K. Gleason

      Article first published online: 30 SEP 2009 | DOI: 10.1002/adfm.200900943

      Thumbnail image of graphical abstract

      Randomly amphiphilic copolymers are deposited by photoinitiated chemical vapor deposition (piCVD). Control over material properties, such as swellability, surface roughness, and water contact angle, are demonstrated over a range of copolymer compositions. The copolymer films adsorb less protein than either of the respective homopolymers, and a model suggesting that molecular-scale heterogeneities in surface composition inhibit protein adsorption is presented.

    18. Gold Nanoparticles Stabilized by Acetylene-Functionalized Multidentate Thioether Ligands: Building Blocks for Nanoparticle Superstructures (pages 3497–3506)

      Torsten Peterle, Philippe Ringler and Marcel Mayor

      Article first published online: 30 SEP 2009 | DOI: 10.1002/adfm.200901410

      Thumbnail image of graphical abstract

      Aimed at the formation of inorganic/organic hybrid gold nanoparticle superstructures, the design and synthesis of acetylene-monofunctionalized multidentate thioether ligands and their ability to stabilize gold nanoparticles is presented. These particles are interlinked due to diacetylene formation whereby nanoparticle aggregates and small superstructures, such as dimers or trimers, are obtained. The interparticle distance in small nanoparticle superstructures reflects the ethynylene-phenylene spacer length.

  7. Corrections

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Contents
    5. Feature Article
    6. Frontispiece
    7. Full Papers
    8. Corrections
    1. You have free access to this content
    2. You have free access to this content
      Crystallization and Grain Growth Kinetics for Precipitation-Based Ceramics: A Case Study on Amorphous Ceria Thin Films from Spray Pyrolysis

      Jennifer L. M. Rupp, Barbara Scherrer, Ashley S. Harvey and Ludwig J. Gauckler

      Article first published online: 30 OCT 2009 | DOI: 10.1002/adfm.200990099

      This article corrects:

SEARCH

SEARCH BY CITATION