Advanced Materials

Cover image for Vol. 22 Issue 14

April 12, 2010

Volume 22, Issue 14

Pages 1547–1662

  1. Cover Picture

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Contents
    5. Progress Report
    6. Review
    7. Communications
    8. Corrections
    1. Nanohybrids for Photonic Devices: Encapsulation of Conjugated Oligomers in Single-Walled Carbon Nanotubes: Towards Nanohybrids for Photonic Devices (Adv. Mater. 14/2010)

      Maria Antonietta Loi, Jia Gao, Fabrizio Cordella, Pascal Blondeau, Enzo Menna, Barbora Bártová, Cécile Hébert, Sorin Lazar, Gianluigi A. Botton, Matus Milko and Claudia Ambrosch-Draxl

      Version of Record online: 12 APR 2010 | DOI: 10.1002/adma.201090044

      Thumbnail image of graphical abstract

      Maria Antonietta Loi and co-workers report on p. 1635 on single-walled carbon nanotubes (SWNTs)/organic hybrids, which may be used as photon sources in future optoelectronic devices. The nanohybrids are “peapods” having sexithiophene molecules inside the hollow space of SWNTs. HRTEM and optical probe measurements show evidence of the encapsulation while density functional calculations confirm the experimental findings and provide deeper insight into the stability and electronic properties of these systems.

  2. Inside Front Cover

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Contents
    5. Progress Report
    6. Review
    7. Communications
    8. Corrections
    1. Urchin-like ZnO Thin Films: Hollow Urchin-like ZnO thin Films by Electrochemical Deposition (Adv. Mater. 14/2010)

      Jamil Elias, Claude Lévy-Clément, Mikhael Bechelany, Johann Michler, Guillaume-Yangshu Wang, Zhao Wang and Laetitia Philippe

      Version of Record online: 12 APR 2010 | DOI: 10.1002/adma.201090045

      Thumbnail image of graphical abstract

      Arrays of ordered hollow urchin-like ZnO single-crystal nanowires with controlled core dimensions and wire morphology can be obtained by a new method that combines electrochemical deposition with colloidal templating rendered electrically conductive, as reported by Jamil Elias and co-workers on p. 1607. This method opens new opportunities for processing novel metal oxide or hydroxide materials based on a similar growth mechanism. Such ordered structures exhibit superior optical reflectance compared to nanowire arrays.

  3. Contents

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Contents
    5. Progress Report
    6. Review
    7. Communications
    8. Corrections
  4. Progress Report

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Contents
    5. Progress Report
    6. Review
    7. Communications
    8. Corrections
    1. Multiferroics with Spiral Spin Orders (pages 1554–1565)

      Yoshinori Tokura and Shinichiro Seki

      Version of Record online: 1 DEC 2009 | DOI: 10.1002/adma.200901961

      Thumbnail image of graphical abstract

      Correlation between magnetism and electricity enables magnetoelectric effects such as electric control of magnetism or magnetic control of electricity (see figure). The recent discovery of the strong coupling between ferroelectricity and spiral magnetic order offers a unique way to achieve more gigantic and versatile magne to electric control in solids.

  5. Review

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Contents
    5. Progress Report
    6. Review
    7. Communications
    8. Corrections
    1. Processing of Bulk Metallic Glass (pages 1566–1597)

      Jan Schroers

      Version of Record online: 17 DEC 2009 | DOI: 10.1002/adma.200902776

      Thumbnail image of graphical abstract

      Bulk metallic glass permits a unique processing method based on thermoplastic forming. Within thermoplastic forming some bulk metallic glasses, which are high-strength metals, can be processed like plastics. These processing methods enable to net-shape bulk metallic glasses on multiple length scales including tens of nanometers to tens of centimeters into shapes that were previously unachievable with any metal processing method (see figure).

  6. Communications

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Contents
    5. Progress Report
    6. Review
    7. Communications
    8. Corrections
    1. Evolution of Nanoscale Pore Structure in Coordination Polymers During Thermal and Chemical Exposure Revealed by Positron Annihilation (pages 1598–1601)

      Ming Liu, Antek G. Wong-Foy, Richard S. Vallery, William E. Frieze, Jennifer K. Schnobrich, David W. Gidley and Adam J. Matzger

      Version of Record online: 7 JAN 2010 | DOI: 10.1002/adma.200903618

      Thumbnail image of graphical abstract

      A new method to probe nanoscale structure (pores, defects, and damage accumulation) for microporous coordination polymers during adsorption of guest molecules (see figure, representing CO2 sorption with definitive evidence of residual porosity) or undergoing thermal degradation is demonstrated using positron annihilation. Structural features invisible to traditional X-ray diffraction and gas-adsorption techniques are revealed, demonstrating a new capability for porous materials characterization.

    2. Assemblies of Conjugated Polyelectrolytes with Proteins for Controlled Protein Photoinactivation (pages 1602–1606)

      Xinrui Duan, Libing Liu, Xuli Feng and Shu Wang

      Version of Record online: 7 JAN 2010 | DOI: 10.1002/adma.200903716

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      Conjugated polyelectrolytes are used to specifically inactivate proteins under light irradiation through their assemblies with proteins by electrostatic or metal ion-mediated coordination interactions. Upon light irradiation, the polymer produces reactive oxygen species that react with and inactivate adjacent proteins. The present work adds a new dimension to the function of conjugated polymers.

    3. Hollow Urchin-like ZnO thin Films by Electrochemical Deposition (pages 1607–1612)

      Jamil Elias, Claude Lévy-Clément, Mikhael Bechelany, Johann Michler, Guillaume-Yangshu Wang, Zhao Wang and Laetitia Philippe

      Version of Record online: 14 JAN 2010 | DOI: 10.1002/adma.200903098

      Thumbnail image of graphical abstract

      Arrays of ordered hollow urchin-like ZnO single-crystal nanowires with controlled core dimensions and wire morphology are obtained by a new method that combines electrochemical deposition with colloidal templating rendered electrically conductive. This method opens new opportunities for processing novel metal oxide or hydroxide materials based on a similar growth mechanism. Such ordered structures exhibit superior optical reflectance compared to nanowire arrays.

    4. Remarkable Oxide Ion Conductivity Observed at Low Temperatures in a Complex Superstructured Oxide (pages 1613–1616)

      R. J. Packer and S. J. Skinner

      Version of Record online: 7 JAN 2010 | DOI: 10.1002/adma.200902692

      Thumbnail image of graphical abstract

      Fast oxide ion conductivity is observed in a structurally complex material, CeNbO4+d, at remarkably low temperatures (see figure), indicating that a new approach to bulk ionic conductors may be required, opening a new research direction for future electrochemical devices such as solid oxide fuel cells.

    5. Color- and Reflectance-Tunable Multiple Reflectors Assembled from Three Polymer Films (pages 1617–1621)

      Na Young Ha, Soon Moon Jeong, Suzushi Nishimura and Hideo Takezoe

      Version of Record online: 28 DEC 2009 | DOI: 10.1002/adma.200903415

      Thumbnail image of graphical abstract

      Tunings of reflectance and colors of multiple photonic bandgaps are demonstrated in the whole visible region by changing the polarization state of incident light. Two tunable systems are assembled from the same three materials of an anisotropic polymeric nematic liquid crystal film and two kinds of isotropic polymer film. The only difference between the two systems is the stacking sequence.

    6. Molecular Scale Control of Unbound and Bound C60 for Topochemical Ultradense Data Storage in an Ultrathin C60 Film (pages 1622–1625)

      Masato Nakaya, Shigeru Tsukamoto, Yuji Kuwahara, Masakazu Aono and Tomonobu Nakayama

      Version of Record online: 28 DEC 2009 | DOI: 10.1002/adma.200902960

      Thumbnail image of graphical abstract

      Molecular-scale control of unbound and bound states of C60 molecules is achieved at room temperature. Using this method, single-molecule-level writing, erasing, and rewriting bits are demonstrated: A single surface C60 molecule represents “1” or “0” of binary data depending on whether the C60 molecule is depressed due to dimerization or trimerization with an underlying C60 molecule or not.

    7. Efficient Spin Injection Through Exchange Coupling at Organic Semiconductor/Ferromagnet Heterojunctions (pages 1626–1630)

      Yiqiang Zhan, Erik Holmström, Raquel Lizárraga, Olle Eriksson, Xianjie Liu, Fenghong Li, Elin Carlegrim, Sven Stafström and Mats Fahlman

      Version of Record online: 28 DEC 2009 | DOI: 10.1002/adma.200903556

      Thumbnail image of graphical abstract

      The schematic visualization of the Alq3 moleculeon the Fe substrate with the optimized geometry at lowest total energy. When the Alq3 molecule is relaxed on the surface, only two of the wings are lying down on the Fe surface, and the third wing remains perpendicular to the surface, showing a strong hybridization occurance.

    8. Fac-Alq3 and Mer-Alq3 Nano/Microcrystals with Different Emission and Charge-Transporting Properties (pages 1631–1634)

      Hai Bi, Hongyu Zhang, Yu Zhang, Hongze Gao, Zhongmin Su and Yue Wang

      Version of Record online: 28 DEC 2009 | DOI: 10.1002/adma.200903094

      Thumbnail image of graphical abstract

      A facile double-film annealing approach has been developed to prepare fac-Alq3 nano/microstructures (see figure) as well as a uniform thin film. More noteworthy is that this approach not only enables the synthesis of high-quality fac-Alq3 nanostructures and thin films but also provides the possibility to evaluate the transporting nature of the fac-Alq3 film. Current–voltage characterization of the fac-Alq3 film implies that fac-Alq3 is a typical p-type semiconductor.

    9. Encapsulation of Conjugated Oligomers in Single-Walled Carbon Nanotubes: Towards Nanohybrids for Photonic Devices (pages 1635–1639)

      Maria Antonietta Loi, Jia Gao, Fabrizio Cordella, Pascal Blondeau, Enzo Menna, Barbora Bártová, Cécile Hébert, Sorin Lazar, Gianluigi A. Botton, Matus Milko and Claudia Ambrosch-Draxl

      Version of Record online: 14 JAN 2010 | DOI: 10.1002/adma.200903527

      Thumbnail image of graphical abstract

      Visible-light emitting single-walled carbon nanotubes (SWNTs)/organic hybrids have been successfully synthesized and promise to be a photon source to be used in future optoelectronic devices. The nanohybrids are “peapods” having sexithiophene molecules inside the hollow space of SWNTs. High-resolution transmission electron microscopy and optical probes show evidence of the encapsulation while density functional theory calculations confirm the experimental findings and provide deeper insight into stability and electronic properties of these systems.

    10. Samarium-Doped Ceria Nanowires: Novel Synthesis and Application in Low-Temperature Solid Oxide Fuel Cells (pages 1640–1644)

      Ying Ma, Xiaodi Wang, Shanghua Li, Muhammet S. Toprak, Bin Zhu and Mamoun Muhammed

      Version of Record online: 4 JAN 2010 | DOI: 10.1002/adma.200903402

      Thumbnail image of graphical abstract

      Samarium-doped ceria (SDC) nanowires are synthesized by a novel, template-, surfactant-free and cost-effective method, using citric acid as precipitating/complexing agent for formation of citrate precursor nanowires. The single SOFC based on SDC nanowires/Na2CO3 nanocomposites as electrolyte is fabricated and the maximum power densities of 417 and 522 mW cm−2 at 550 and 600 °C are achieved, showing great potential for low-temperature SOFCs.

    11. High-Performance Organic Nanoscale Photoswitches Based on Nanogap Electrodes Coated with a Blend of Poly(3-hexylthiophene) and [6,6]-Phenyl-C61-butyric Acid Methyl Ester (P3HT:PCBM) (pages 1645–1648)

      Hongfei Zhu, Tao Li, Yajie Zhang, Huanli Dong, Jinsheng Song, Huaping Zhao, Zhongming Wei, Wei Xu, Wenping Hu and Zhishan Bo

      Version of Record online: 28 DEC 2009 | DOI: 10.1002/adma.200903671

      Thumbnail image of graphical abstract

      High-performance photoswitches, a key element in organic optoelectronics, are constructed by spin-coating nanogap gold electrodes with the title polymer blend (see figure). Optimizing the gap width of the electrodes gives an on/off ratio of up to 10000 at 1 mV bias. The high on/off ratio, low energy consumption, low cost, simple processing procedures, and high air stability of the photoswitches indicate bright prospects for them in organic optoelectronics.

    12. Electrical Detection of DNA Hybridization with Single-Base Specificity Using Transistors Based on CVD-Grown Graphene Sheets (pages 1649–1653)

      Xiaochen Dong, Yumeng Shi, Wei Huang, Peng Chen and Lain-Jong Li

      Version of Record online: 18 JAN 2010 | DOI: 10.1002/adma.200903645

      Thumbnail image of graphical abstract

      Large-sized chemical vapor deposited graphene films configured as solution-gated transistors can label-freely and electrically detect DNA hybridization with single-base specificity. The gate voltage which gives the minimum device conductance (Vg,min) is sensitive to the charge transfer between DNA molecules and graphene, and thus is used to detect the DNA hybridization. The DNA detection is attributed to the electronic n-doping from DNA to graphene rather than the electrostatic gating effect or impurity screening effect.

    13. Carbon Nanotube Microarchitectures for Enhanced Thermal Conduction at Ultralow Mass Fraction in Polymer Composites (pages 1654–1658)

      Michael Bozlar, Delong He, Jinbo Bai, Yann Chalopin, Natalio Mingo and Sebastian Volz

      Version of Record online: 8 DEC 2009 | DOI: 10.1002/adma.200901955

      Thumbnail image of graphical abstract

      A carbon-nanotube architecture based on ceramic microparticles allows for strikingly reducing the number of thermal contact resistances between carbon nanotubes (CNT). The result is a 130% enhancement of the thermal conductivity of the nanocomposites at a remarkably low CNT mass fraction of 0.15 wt%.

    14. Local Structure and Strain-Induced Distortion in Ce0.8Gd0.2O1.9 (pages 1659–1662)

      Anna Kossoy, Anatoly I. Frenkel, Qi Wang, Ellen Wachtel and Igor Lubomirsky

      Version of Record online: 7 JAN 2010 | DOI: 10.1002/adma.200902041

      Thumbnail image of graphical abstract

      Extended X-ray absorption fine structure spectroscopy (EXAFS) was used to determine the interatomic distances in both strain-free and strained thin films of Ce0.8Gd0.2O1.9. It was found that in response to compressive strain, the Ce4+ ion undergoes an anomalously large shift away from the oxygen vacancy. This finding offers a microscopic explanation for the elastic anomalies observed in Ce0.8Gd0.2O1.9.

  7. Corrections

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Contents
    5. Progress Report
    6. Review
    7. Communications
    8. Corrections
    1. You have free access to this content
      Correction: Macroscopic Single-Walled-Carbon-Nanotube Fiber Self-Assembled by Dip-Coating Method

      Eui Yun Jang, Tae June Kang, Hyeongwook Im, Seung Jae Baek, Seongyong Kim, Dae Hong Jeong, Yung Woo Park and Yong Hyup Kim

      Version of Record online: 12 APR 2010 | DOI: 10.1002/adma.201090047

      This article corrects:

      Macroscopic Single-Walled-Carbon-Nanotube Fiber Self-Assembled by Dip-Coating Method

      Vol. 21, Issue 43, 4357–4361, Version of Record online: 24 JUN 2009

    2. You have free access to this content
      Correction: The Quest for Nanoscale Magnets: The example of [Mn12] Single Molecule Magnets

      Guillaume Rogez, Bertrand Donnio, Emmanuel Terazzi, Jean-Louis Gallani, Jean-Paul Kappler, Jean-Pierre Bucher and Marc Drillon

      Version of Record online: 12 APR 2010 | DOI: 10.1002/adma.201090048

      This article corrects:

      The Quest for Nanoscale Magnets: The example of [Mn12] Single Molecule Magnets

      Vol. 21, Issue 43, 4323–4333, Version of Record online: 17 JUL 2009

    3. You have free access to this content
      Correction: Electronic-Field Control of Two-Dimensional Electrons in Polymer-Gated-Oxide Semiconductor Heterostructures

      Masaki Nakano, Atsushi Tsukazaki, Akira Ohtomo, Kazunori Ueno, Shunsuke Akasaka, Hiroyuki Yuji, Ken Nakahara, Tomoteru Fukumura and Masashi Kawasaki

      Version of Record online: 12 APR 2010 | DOI: 10.1002/adma.201090049

      This article corrects:

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