Advanced Functional Materials

Cover image for Vol. 21 Issue 2

January 21, 2011

Volume 21, Issue 2

Pages 201–395

  1. Cover Picture

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Contents
    5. Correction
    6. Full Papers
    1. Nanoparticle Arrays: Sub-Nanometer Level Size Tuning of a Monodisperse Nanoparticle Array Via Block Copolymer Lithography (Adv. Funct. Mater. 2/2011) (page 201)

      Dong Ok Shin, Duck Hyun Lee, Hyoung-Seok Moon, Seong-Jun Jeong, Ju Young Kim, Jeong Ho Mun, Heesook Cho, Soojin Park and Sang Ouk Kim

      Article first published online: 28 DEC 2010 | DOI: 10.1002/adfm.201090119

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      The fabrication and catalytic application of a size-tunable monodisperse nanoparticle array (poly(styrene-block-4-vinylpyridine) diblock copolymer thin-film) is presented by Soojin Park, Sang Ouk Kim, and co-workers on page 250. Both the uniform size of the vertical cylinder nanodomains as well as well-controlled metal ion deposition are two crucial requirements for such nanoparticle arrays. The concept is confirmed by catalytic application in highly selective growth of double- or triple-walled vertical carbon nanotubes.

  2. Inside Front Cover

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Contents
    5. Correction
    6. Full Papers
    1. Cancer Detection: Polyhedral Oligomeric Silsesquioxanes-Containing Conjugated Polymer Loaded PLGA Nanoparticles with Trastuzumab (Herceptin) Functionalization for HER2-Positive Cancer Cell Detection (Adv. Funct. Mater. 2/2011) (page 202)

      Kai Li, Yutao Liu, Kan-Yi Pu, Si-Shen Feng, Ruoyu Zhan and Bin Liu

      Article first published online: 28 DEC 2010 | DOI: 10.1002/adfm.201090120

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      Polyhedral oligomeric silsesquioxanes (POSS)-containing conjugated-polymer-loaded poly(lactic-co-glycolic acid) nanoparticles with high quantum yield and fine-tuned surface trastuzumab (Herceptin)-functionalization are reported by Bin Liu and co-workers on page 287. These antibody-functionalized fluorescent nanoparticles show great potential towards specific human epidermal growth factor receptor 2 (HER2)-positive cancer cell detection.

  3. Contents

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Contents
    5. Correction
    6. Full Papers
    1. Contents: (Adv. Funct. Mater. 2/2011) (pages 203–209)

      Article first published online: 28 DEC 2010 | DOI: 10.1002/adfm.201090121

  4. Correction

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Contents
    5. Correction
    6. Full Papers
    1. You have free access to this content
      Correction: Tunable Colors in Opals and Inverse Opal Photonic Crystals (page 210)

      Carlos I. Aguirre, Edilso Reguera and Andreas Stein

      Article first published online: 28 DEC 2010 | DOI: 10.1002/adfm.201090122

      This article corrects:

      Tunable Colors in Opals and Inverse Opal Photonic Crystals

      Vol. 20, Issue 16, 2565–2578, Article first published online: 20 JUL 2010

    2. You have free access to this content
      Correction: Layered LaSrGa3O7-Based Oxide-Ion Conductors: Cooperative Transport Mechanisms and Flexible Structures (page 210)

      Cristina Tealdi, Piercarlo Mustarelli and M. Saiful Islam

      Article first published online: 28 DEC 2010 | DOI: 10.1002/adfm.201090123

      This article corrects:

      Layered LaSrGa3O7-Based Oxide-Ion Conductors: Cooperative Transport Mechanisms and Flexible Structures

      Vol. 20, Issue 22, 3874–3880, Article first published online: 27 AUG 2010

  5. Full Papers

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Contents
    5. Correction
    6. Full Papers
    1. Functional Porous Polymers by Emulsion Templating: Recent Advances (pages 211–225)

      Scott D. Kimmins and Neil R. Cameron

      Article first published online: 30 NOV 2010 | DOI: 10.1002/adfm.201001330

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      Emulsion templating is an attractive method for the production of well-defined, highly porous materials. Recent work in this area is reviewed, focusing on both the development of new functional materials as well as the chemical functionalization of existing ones, together with their application in a range of areas of materials science.

    2. Magnetic, Multilayered Nanotubes of Low Aspect Ratios for Liquid Suspensions (pages 226–232)

      Robert Zierold, Zhenyu Wu, Johannes Biskupek, Ute Kaiser, Julien Bachmann, Carl E. Krill III and Kornelius Nielsch

      Article first published online: 1 OCT 2010 | DOI: 10.1002/adfm.201001395

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      A scaled-up template-based preparation strategy for magnetic nanotubes with low aspect ratio is presented. The combination of thin porous alumina membranes with the atomic layer deposition of iron oxide sandwiched between silica layers allows for a tailor-made synthesis. Release of the nanotubes results in a liquid suspension that exhibits a change in the viscosity as a function of the applied magnetic field.

    3. Resistive Switching in Bulk Silver Nanowire–Polystyrene Composites (pages 233–240)

      Sadie I. White, Patrick M. Vora, James M. Kikkawa and Karen I. Winey

      Article first published online: 10 NOV 2010 | DOI: 10.1002/adfm.201001383

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      Silver filament formation results in bulk resistive switching in silver nanowire-polystyrene composites. Below the switching voltage, the percolation pathway (blue nanowires) is dominated by interparticle contacts. Above the switching voltage, metallic filaments of silver atoms (shown in red) form between nanowires, resulting in extension of the electrical percolation network within the composite and decreasing its macroscopic resistance.

    4. High Thermoelectric Performance in PbTe Due to Large Nanoscale Ag2Te Precipitates and La Doping (pages 241–249)

      Yanzhong Pei, Jessica Lensch-Falk, Eric S. Toberer, Douglas L. Medlin and G. Jeffrey Snyder

      Article first published online: 9 NOV 2010 | DOI: 10.1002/adfm.201000878

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      Formation of nanoscale precipitates of Ag2Te in PbTe is controlled by manipulating the solubility. The lattice thermal conductivity reduction due to the relatively large (50–200 nm) precipitates is directly observed. The capability to independently control carrier density with La doping results in zT ∼1.5 at high temperatures.

    5. Sub-Nanometer Level Size Tuning of a Monodisperse Nanoparticle Array Via Block Copolymer Lithography (pages 250–254)

      Dong Ok Shin, Duck Hyun Lee, Hyoung-Seok Moon, Seong-Jun Jeong, Ju Young Kim, Jeong Ho Mun, Heesook Cho, Soojin Park and Sang Ouk Kim

      Article first published online: 27 OCT 2010 | DOI: 10.1002/adfm.201001396

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      A monodisperse nanoparticle array with sub-nanometer level size tunability is achieved via block copolymer lithography using poly(styrene-block-4-vinylpyridine) (PS-b-P4VP) thin-film templates. The size uniformity of vertical P4VP cylinder nanodomains is achieved by solvent annealing, and highly specific metal ion complex deposition is mediated by electrostatic interactions. Both are crucial for the size-tunable monodisperse nanoparticle array creation.

    6. Magnetic Nanoparticles Modified with Carbon Nanotubes for Electrocatalytic Magnetoswitchable Biosensing Applications (pages 255–260)

      Briza Pérez-López and Arben Merkoçi

      Article first published online: 26 OCT 2010 | DOI: 10.1002/adfm.201001306

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      An on–off electro-switchable biosensor controlled by an external magnetic field has been developed. Based on screen-printed electrodes, the biosensor has been modified with tyrosinase-functionalized magnetic nanoparticles. Operating in synergy with a multiwalled carbon-nanotube network, the biosensor opens the door to a wide range of novel bioelectrocatalytic applications of magnetocontrolled redox enzymes.

    7. Description of the Morphology Dependent Charge Transport and Performance of Polymer:Fullerene Bulk Heterojunction Solar Cells (pages 261–269)

      Klára Maturová, Svetlana S. van Bavel, Martijn M. Wienk, René A. J. Janssen and Martijn Kemerink

      Article first published online: 9 NOV 2010 | DOI: 10.1002/adfm.201001515

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      A combined numerical charge transport and morphology model describes the device characteristics of archetypal polymer:fullerene bulk heterojunction solar cells with strongly varying performance, induced by creating different morphologies. A simple 2D representation of the complex 3D morphology accounts for the performance and highlights the importance of fast lateral separation of photoinduced charges in these solar cells.

    8. Multifunctional Mesoporous Nanoellipsoids for Biological Bimodal Imaging and Magnetically Targeted Delivery of Anticancer Drugs (pages 270–278)

      Yu Chen, Hangrong Chen, Shengjian Zhang, Feng Chen, Lingxia Zhang, Jiamin Zhang, Min Zhu, Huixia Wu, Limin Guo, Jingwei Feng and Jianlin Shi

      Article first published online: 26 OCT 2010 | DOI: 10.1002/adfm.201001495

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      A polyelectrolyte mediated self-assembly technique is used to prepare mesoporous nanostructures for biological bimodal imaging and magnetically targeted delivery of anticancer drugs (doxorubicin). Positively charged polyelectrolyte and negatively charged fluorescent quantum dots are assembled onto the surface of ellipsoidal Fe3O4@SiO2@mSiO2 nanostructures to combine tunable fluorescent/magnetic properties with mesoporous ellipsoidal nanostructures for enhanced cancer-cell uptake, endowing multifunctional capabilities for chemotherapy of cancers.

    9. Exploring Nanomechanical Behavior of Silicon Nanowires: AFM Bending Versus Nanoindentation (pages 279–286)

      Yong-Jae Kim, Kwangsoo Son, In-Chul Choi, In-Suk Choi, Won Il Park and Jae-il Jang

      Article first published online: 15 NOV 2010 | DOI: 10.1002/adfm.201001471

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      Nanomechanicaltests are performed on silicon nanowires with radii between 15 and 70 nm based on different analytical models and testing conditions in order to suggest the most appropriate method for determining mechanical performance of nanowires. The investigations also extensively explore size-dependent mechanical properties.

    10. Polyhedral Oligomeric Silsesquioxanes-Containing Conjugated Polymer Loaded PLGA Nanoparticles with Trastuzumab (Herceptin) Functionalization for HER2-Positive Cancer Cell Detection (pages 287–294)

      Kai Li, Yutao Liu, Kan-Yi Pu, Si-Shen Feng, Ruoyu Zhan and Bin Liu

      Article first published online: 28 SEP 2010 | DOI: 10.1002/adfm.201001435

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      Polyhedral oligomeric silsesquioxanes (POSS)-containing conjugated polymer (CP) loaded PLGA nanoparticles with high quantum yield and fine-tuned surface trastuzumab functionalization are synthesized for human epidermal growth factor receptor 2 (HER2)-positive cancer cell detection.

    11. Shape Anisotropy Influencing Functional Properties: Trigonal Prismatic ZnO Nanoparticles as an Example (pages 295–304)

      Carlos Lizandara-Pueyo, Stephan Siroky, Markus R. Wagner, Axel Hoffmann, Juan S. Reparaz, Michael Lehmann and Sebastian Polarz

      Article first published online: 9 NOV 2010 | DOI: 10.1002/adfm.201000997

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      The formation of shape-controlled ZnO nanoparticles from an organometallic precursor is directed to the interfaces of a water-in-oil emulsion. Colloidal dispersions containing particles with prismatic morphology and different aspect ratio are synthesized. The anisotropic particles exhibit the interesting property that the shortening of the crystallites induces a decrease of the energy gap.

    12. Textile-Based Flexible Electroluminescent Devices (pages 305–311)

      Bin Hu, Dapeng Li, Okan Ala, Prakash Manandhar, Qinguo Fan, Dayalan Kasilingam and Paul D. Calvert

      Article first published online: 9 NOV 2010 | DOI: 10.1002/adfm.201001110

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      A novel, textile-based, flexible electroluminescent device is fabricated by sandwiching phosphor layer between a textile-based conductor and an aluminum foil. The flexible and transparent textile-based conductors were developed by inkjet printing poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) onto polyethylene terephthalate (PET) mesh fabrics. The flexible textile-based device emits light when a 200 V alternating current voltage at a fixed 400 Hz frequency is applied.

    13. Manganese Oxide Octahedral Molecular Sieves (OMS-2) Multiple Framework Substitutions: A New Route to OMS-2 Particle Size and Morphology Control (pages 312–323)

      Cecil K. King’ondu, Naftali Opembe, Chun-hu Chen, Katana Ngala, Hui Huang, Aparna Iyer, Hector F. Garcés and Steven L. Suib

      Article first published online: 25 NOV 2010 | DOI: 10.1002/adfm.201001020

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      Multidoping provides a facile way to control the morphology, crystal system, surface area, particle size, and, hence, the chemical and physical properties of cryptomelane materials. This strategy makes it possible to obtain ultrafine cryptomelane flake-like particles that reveal novel 1 × 1 and 2 × 2 tunnels (see figure), which have thus far only been observed in simulated structures.

    14. Multiscale Pattern Generation in Viscoelastic Polymer Films by Spatiotemporal Modulation of Electric Field and Control of Rheology (pages 324–335)

      Partho S. G. Pattader, Indrani Banerjee, Ashutosh Sharma and Dipankar Bandyopadhyay

      Article first published online: 10 NOV 2010 | DOI: 10.1002/adfm.201001206

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      Based on experiments and simulations, a spatiotemporally modulated electric field is shown to be usable for large-area microfabrication of hierarchical multiscale patterns in thin viscoelastic films. Increasingly finer structures are produced by progressive ramping up of applied voltage while preserving the coarser structures already produced by a partial cross-linking of polydimethysiloxane (PDMS) films. Final multiscale micropatterns are stabilized by complete cross-linking.

    15. Influence of Substituted Pyridine Rings on Physical Properties and Electron Mobilities of 2-Methylpyrimidine Skeleton-Based Electron Transporters (pages 336–342)

      Hisahiro Sasabe, Daisaku Tanaka, Daisuke Yokoyama, Takayuki Chiba, Yong-Jin Pu, Ken-ichi Nakayama, Masaaki Yokoyama and Junji Kido

      Article first published online: 19 OCT 2010 | DOI: 10.1002/adfm.201001252

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      The influence of substituted pyridine rings on the physical properties and electron mobilities (μe) of 2-methylpyrimidine skeleton-based electron-transporters is investigated. Although the structural difference is very small, the difference in μe is found to be quite large. At 298 K, the μe of B4PyMPM is measured to be 10 times higher than that of B3PyMPM and 100 times higher than that of B2PyMPM.

    16. Reduction of Collection Efficiency of Charge Carriers with Increasing Cell Size in Polymer Bulk Heterojunction Solar Cells (pages 343–347)

      Won-Ik Jeong, Jane Lee, Sun-Young Park, Jae-Wook Kang and Jang-Joo Kim

      Article first published online: 9 NOV 2010 | DOI: 10.1002/adfm.201001578

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      Changes in solar cell performance related to active area size could not be described solely by a Shockley diode equation based model unless photocurrent collection was also considered. As cell area increased, collection efficiency deviated from unity, which further reduced device performance. That deviation is attributed to acceleration of recombination loss at low built-in junction potentials.

    17. Single-Crystalline LiMn2O4 Nanotubes Synthesized Via Template-Engaged Reaction as Cathodes for High-Power Lithium Ion Batteries (pages 348–355)

      Yuan-Li Ding, Jian Xie, Gao-Shao Cao, Tie-Jun Zhu, Hong-Ming Yu and Xin-Bing Zhao

      Article first published online: 9 NOV 2010 | DOI: 10.1002/adfm.201001448

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      1D single-crystalline nanotubes of spinel LiMn2O4 targeted for high-power lithium ion batteries are fabricated based on a template-engaged reaction. This product delivers superior high-rate capabilities and good cycling stability. Even after prolonged cycling at high-current densities, the tubular morphology and high-crystallinity characteristics of LiMn2O4 can be retained, indicating their potential application in high-power lithium ion batteries, especially for electric vehicles.

    18. In-Situ Monitoring of the Solid-State Microstructure Evolution of Polymer:Fullerene Blend Films Using Field-Effect Transistors (pages 356–363)

      John G. Labram, Ester Buchaca Domingo, Natalie Stingelin, Donal D. C. Bradley and Thomas D. Anthopoulos

      Article first published online: 11 NOV 2010 | DOI: 10.1002/adfm.201001446

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      The evolution of the solid-state microstructure of binary P3HT:PC61BM blend films upon annealing is monitored using field-effect measurements. Changes in the measured hole and electron mobilities are shown to reveal relevant information about the phase-segregation in this system. Using single/dual-gate transistors and in-situ measurements, it is demonstrated that the spatial- and time-dependence of microstructural changes in such polymer:fullerene blend films can be probed.

    19. The Effect of Nanotube Content and Orientation on the Mechanical Properties of Polymer–Nanotube Composite Fibers: Separating Intrinsic Reinforcement from Orientational Effects (pages 364–371)

      Fiona M. Blighe, Karen Young, Juan J. Vilatela, Alan H. Windle, Ian A. Kinloch, Libo Deng, Robert J. Young and Jonathan N. Coleman

      Article first published online: 30 NOV 2010 | DOI: 10.1002/adfm.201000940

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      The strength and stiffness of polymer–nanotube fibers as a function of nanotube content and orientation is presented. The rule of mixtures, including Krenchel's orientation dependence, applies extremely well to such nanocomposites.

    20. Sensor Array Composed of “Clicked” Individual Microcantilever Chips (pages 372–379)

      François P. V. Paoloni, Sven Kelling, Juzheng Huang and Stephen R. Elliott

      Article first published online: 15 NOV 2010 | DOI: 10.1002/adfm.201000729

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      Pick ‘n’ Mix: Photograph of the field of view of a Phase-Shifting Interferometric Microscopic (PSIM) of a sensor array composed of four individual microcantilever chips. Each chip possesses two 500 μm long cantilevers and is decorated with a different headgroup using a "click" reaction. Solvent vapors are discriminated by the fingerprint response of the array.

    21. A Patterned 3D Silicon Anode Fabricated by Electrodeposition on a Virus-Structured Current Collector (pages 380–387)

      Xilin Chen, Konstantinos Gerasopoulos, Juchen Guo, Adam Brown, Chunsheng Wang, Reza Ghodssi and James N. Culver

      Article first published online: 9 NOV 2010 | DOI: 10.1002/adfm.201001475

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      3D silicon nanowire anodes with outstanding performance are fabricated by electrochemical deposition of Si onto self-assembled, virus-structured nickel current collectors. Capacities larger than 1200 mAh g−1 for over 170 cycles have been obtained with excellent rate capability. The self-assembled biological templates combined with the low-cost and conformal electrodeposition method provide a unique method to synthesize next-generation silicon anodes.

    22. On the Principles of Printing Sub-micrometer 3D Structures from Dielectric-Liquid-Based Colloids (pages 388–395)

      Niklas C. Schirmer, Stefan Ströhle, Manish K. Tiwari and Dimos Poulikakos

      Article first published online: 9 NOV 2010 | DOI: 10.1002/adfm.201001426

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      Dielectrophoresis-assisted on-demand printing of colloidal gold suspensions is employed to print 2D and 3D structures with sub-micrometer feature sizes. The physics of the structure formation on the substrate is explained through visualization and analysis of the various time scales relevant to the printing process. Sub-micrometer conductive tracks are printed using this technique.

      Corrected by:

      Correction: Correction: On the Principles of Printing Sub-micrometer 3D Structures from Dielectric-Liquid-Based Colloids

      Vol. 22, Issue 6, 1111, Article first published online: 14 MAR 2012

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