Advanced Functional Materials

Cover image for Advanced Functional Materials

May 9, 2008

Volume 18, Issue 9

Pages 1355–1472

  1. Cover Picture

    1. Top of page
    2. Cover Picture
    3. Contents
    4. Full Papers
    5. Index
    1. Cover Picture: An Engineered Mannoside Presenting Platform: Escherichia coli Adhesion under Static and Dynamic Conditions (Adv. Funct. Mater. 9/2008) (page 1355)

      Katrin A. Barth, Géraldine Coullerez, Lina M. Nilsson, Riccardo Castelli, Peter H. Seeberger, Viola Vogel and Marcus Textor

      Article first published online: 14 MAY 2008 | DOI: 10.1002/adfm.200890034

      Thumbnail image of graphical abstract

      Molecular assembly of glycosylated polycationic copolymers can provide a well-defined surface platform for the presentation of engineered mono-and oligoglycosides at controlled densities and in specific patterns, as reported by Geraldine Coullerez and co-workers on p. 1459. These engineered surfaces are ideal for the study of adhesion of pathogens to surfaces and are believed to be promising tools to investigate early stages of surface colonization and infection. Escherichia coli adhesion (see cover) is highly specific to the type of mannosides and their density and linker chemistry, and depends strongly on flow rate.

  2. Contents

    1. Top of page
    2. Cover Picture
    3. Contents
    4. Full Papers
    5. Index
    1. Contents: Adv. Funct. Mater. 9/2008 (pages 1357–1360)

      Article first published online: 14 MAY 2008 | DOI: 10.1002/adfm.200890035

  3. Full Papers

    1. Top of page
    2. Cover Picture
    3. Contents
    4. Full Papers
    5. Index
    1. Tunable Crystal Nanostructures of Pentacene Thin Films on Gate Dielectrics Possessing Surface-Order Control (pages 1363–1370)

      Do Hwan Kim, Hwa Sung Lee, Hoichang Yang, Lin Yang and Kilwon Cho

      Article first published online: 21 APR 2008 | DOI: 10.1002/adfm.200701019

      Thumbnail image of graphical abstract

      The crystalline phase and morphology of pentacene thin films deposited on a dielectric layer (see figure) can be controlled by changing the molecular ordering structure of organosilane SAMs adsorbed on the dielectric surface. Depending on the physical structure of the dielectric surface, the pentacene nanolayers can adopt two competing crystalline phases – “thin-film” and “bulk” – that affect the π-conjugated nanostructures, causing the field-effect mobility to vary.

    2. Virus Filtration Membranes Prepared from Nanoporous Block Copolymers with Good Dimensional Stability under High Pressures and Excellent Solvent Resistance (pages 1371–1377)

      Seung Yun Yang, Jihoon Park, Jinhwan Yoon, Moonhor Ree, Sung Key Jang and Jin Kon Kim

      Article first published online: 17 APR 2008 | DOI: 10.1002/adfm.200700832

      Thumbnail image of graphical abstract

      A new nanoporous membrane suitable for virus filtration with good dimensional stability under high pressures is introduced. Block copolymer films with mixed orientations of cylindrical nanopores coupled with a conventional supporting membrane showed mechanical stability at high filtering pressure without sacrificing selectivity for the HRV 14 virus. The nanoporous film (see figure) showed excellent resistance to all organic solvents.

    3. Polyelectrolyte Multilayer Films of Controlled Stiffness Modulate Myoblast Cell Differentiation (pages 1378–1389)

      Kefeng Ren, Thomas Crouzier, Christian Roy and Catherine Picart

      Article first published online: 29 APR 2008 | DOI: 10.1002/adfm.200701297

      Thumbnail image of graphical abstract

      Multilayer films made of poly(L-lysine)/hyaluronan (PLL/HA) of controlled stiffness have been used to investigate the effects of the mechanical properties of thin films on skeletal muscle cell (C2C12 cells) differentiation. The film stiffness strongly modulates not only initial myoblast adhesion and proliferation, but also myoblast differentiation into myotubes. On soft films, myotubes are initially short and thick before clumping and detaching. On stiff films, cells form elongated and thin striated myotubes.

    4. Temperature Responsive Solution Partition of Organic–Inorganic Hybrid Poly(N-isopropylacrylamide)-Coated Mesoporous Silica Nanospheres (pages 1390–1398)

      Po-Wen Chung, Rajeev Kumar, Marek Pruski and Victor S.-Y. Lin

      Article first published online: 29 APR 2008 | DOI: 10.1002/adfm.200701116

      Thumbnail image of graphical abstract

      A series of poly(N-isopropylacrylamide)-coated mesoporous silica nanoparticles (PNiPAm-MSNs) have been synthesized (see scheme). By controlling the degree of polymerization, these organic–inorganic hybrid nanoparticles exhibit a temperature-dependent solution partition behavior between hydrophobic and hydrophilic solvents.

    5. A Dual Luminescent Sensor Material for Simultaneous Imaging of Pressure and Temperature on Surfaces (pages 1399–1406)

      Matthias I. J. Stich, Stefan Nagl, Otto S. Wolfbeis, Ulrich Henne and Michael Schaeferling

      Article first published online: 29 APR 2008 | DOI: 10.1002/adfm.200701199

      Thumbnail image of graphical abstract

      A new class of dual luminescent sensors for determination of pressure and temperature is presented, capable of imaging both analytes simultaneously in surpassing spatial resolution (see figure). The signals of the two probes, a Pt-porphyrin for pressure and a Eu-complex for temperature, are separated by means of their different luminescence lifetimes.

    6. Multifunctional Bismuth-Doped Nanoporous Silica Glass: From Blue-Green, Orange, Red, and White Light Sources to Ultra-Broadband Infrared Amplifiers (pages 1407–1413)

      Shifeng Zhou, Nan Jiang, Bin Zhu, Hucheng Yang, Song Ye, Gandham Lakshminarayana, Jianhua Hao and Jianrong Qiu

      Article first published online: 29 APR 2008 | DOI: 10.1002/adfm.200701290

      Thumbnail image of graphical abstract

      Stabilizing “active” centers (bismuth) in a “tolerant” host (nanoporous silica glass) is shown to be a facile approach to creating a tunable ultra-broadband light source. The obtained materials, in which unusual multiple bismuth centers (Bi+, Bi2+, and Bi3+) are stabilized, emit in an ultra-broadband range from blue-green, orange, red, and white to the near-infrared region (see figure), which covers the spectral range of the traditional three primary colors for white light and also the telecommunications window.

    7. Selective Determination of Dopamine on a Boron-Doped Diamond Electrode Modified with Gold Nanoparticle/Polyelectrolyte-coated Polystyrene Colloids (pages 1414–1421)

      Min Wei, Li-Guo Sun, Zhuo-Ying Xie, Jin-Fang Zhii, Akira Fujishima, Yasuaki Einaga, De-Gang Fu, Xue-Mei Wang and Zhong-Ze Gu

      Article first published online: 21 APR 2008 | DOI: 10.1002/adfm.200701099

      Thumbnail image of graphical abstract

      Negatively charged, three-dimensional (Au/PAH)4(PSS/PAH)4 multilayer-coated PS spheres are prepared to modify a boron-doped diamond electrode (BDD) for the determination of dopamine (DA) and ascorbic acid (AA). The modified BDD electrodes shows high electrocatalytic activity toward the oxidation of DA and inhibits the electrochemical reaction of AA, and can effectively determine DA in the presence of AA with good selectivity.

    8. The Effect of Alloying on the Bandgap Energy of Nanoscaled Semiconductor Alloys (pages 1422–1429)

      Yong Fu Zhu, Xing You Lang and Qing Jiang

      Article first published online: 29 APR 2008 | DOI: 10.1002/adfm.200700857

      Thumbnail image of graphical abstract

      Composition-and size-dependent bandgap functions (Eg(x,D)) are modeled for homogeneously alloyed pseudo-binary IIB–VIB chalcogenide semiconductor nanoparticles. The modeling corresponds well with available experimental results (see figure; symbols are experimental results). It is found that the bowing shape of the function with changes in composition becomes weak as the nanoparticle size decreases, while the atomic interaction between the alloy compositions is negligible.

    9. Electrophosphorescent Polyfluorenes Containing Osmium Complexes in the Conjugated Backbone (pages 1430–1439)

      Chen-Han Chien, Song-Fu Liao, Chen-Hao Wu, Ching-Fong Shu, Sheng-Yuan Chang, Yun Chi, Pi-Tai Chou and Cheng-Hsuan Lai

      Article first published online: 29 APR 2008 | DOI: 10.1002/adfm.200701137

      Thumbnail image of graphical abstract

      Highly efficient red-electrophosphorescent devices have been realised by incorporating Os complexes into the conjugated backbone of a blue polyfluorene copolymer that contains both hole-and electron-transporting pendent groups. The best device performance is a maximum external quantum efficiency of 18.0% with a peak brightness of 38 000 cd m−2.

    10. Core–Ring Structured NiCo2O4 Nanoplatelets: Synthesis, Characterization, and Electrocatalytic Applications (pages 1440–1447)

      Bai Cui, Hong Lin, Jian-Bao Li, Xin Li, Jun Yang and Jie Tao

      Article first published online: 29 APR 2008 | DOI: 10.1002/adfm.200700982

      Thumbnail image of graphical abstract

      A typical core–ring nanostructure occurs in NiCo2O4 nanoplatelets. It is revealed by energy dispersive spectroscopy analysis that the cation concentration of Co (Ni) in this structure gradually increases (decreases) from the ring to the core. These core–ring nanoplatelets are active anode catalysts for water electrolysis.

    11. Layered Double Hydroxide Nano- and Microstructures Grown Directly on Metal Substrates and Their Calcined Products for Application as Li-Ion Battery Electrodes (pages 1448–1458)

      Jinping Liu, Yuanyuan Li, Xintang Huang, Guangyun Li and Zikun Li

      Article first published online: 29 APR 2008 | DOI: 10.1002/adfm.200701383

      Thumbnail image of graphical abstract

      A film of ZnO/ZnAl2O4 nanosheets, which was derived from Zn[BOND]Al-(CO3)2− layered double hydroxides by calcination, has been used directly as the anode material for Li-ion batteries (0.05–2.5 V at 200 mA g−1). The nanostructured film exhibits higher discharge and charge capacities and considerably improved cycling stability as compared to a pure ZnO nanoparticle film.

    12. An Engineered Mannoside Presenting Platform: Escherichia coli Adhesion under Static and Dynamic Conditions (pages 1459–1469)

      Katrin A. Barth, Géraldine Coullerez, Lina M. Nilsson, Riccardo Castelli, Peter H. Seeberger, Viola Vogel and Marcus Textor

      Article first published online: 14 MAY 2008 | DOI: 10.1002/adfm.200701246

      Thumbnail image of graphical abstract

      Molecular assembly of glycosylated polycationic copolymers is demonstrated as a quantitative surface platform for the presentation of engineered mono- and oligoglycosides at controlled surface densities, suitable for the production of homogeneous and micropatterned carbohydrate surfaces. E. coli adhesion (see figure) is highly specific to the type of mannosides and their density, linker chemistry, and depends strongly on flow rate.

  4. Index

    1. Top of page
    2. Cover Picture
    3. Contents
    4. Full Papers
    5. Index

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