Advanced Materials

Cover image for Vol. 24 Issue 42

November 8, 2012

Volume 24, Issue 42

Pages 5647–5772

  1. Cover Picture

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Back Cover
    5. Masthead
    6. Contents
    7. Review
    8. Communications
    9. Frontispiece
    10. Communications
    11. Frontispiece
    12. Communications
    1. Optical Modulation: Optical Modulation Based on Direct Photon-Plasmon Coupling in Organic/Metal Nanowire Heterojunctions (Adv. Mater. 42/2012) (page 5647)

      Yongli Yan, Chuang Zhang, Jian Yao Zheng, Jiannian Yao and Yong Sheng Zhao

      Version of Record online: 2 NOV 2012 | DOI: 10.1002/adma.201290261

      Thumbnail image of graphical abstract

      Organic/metal nanowire heterojunctions are prepared via site-specific nucleation and growth of organic molecules on the ends of silver nanowires. Yong Sheng Zhao and co-workers show on page 5681 that the formation of exciton polaritons in organic nanowires under excitation greatly improves the plasmon launch efficiency due to the direct photon-plasmon coupling, which is described as the clasping of the left and right hands in the cover image. The scattering of plasmons at the metal wire tip can be modulated efficiently in such structures. These organic/metal nanowire junctions are potentially applied in integrated photonic circuits as underlying Boolean logic gates.

  2. Inside Front Cover

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Back Cover
    5. Masthead
    6. Contents
    7. Review
    8. Communications
    9. Frontispiece
    10. Communications
    11. Frontispiece
    12. Communications
    1. Ionic Liquids: A New General Synthetic Strategy for Phase-Pure Complex Functional Materials (Adv. Mater. 42/2012) (page 5648)

      David C. Green, Stefan Glatzel, Andrew M. Collins, Avinash J. Patil and Simon R. Hall

      Version of Record online: 2 NOV 2012 | DOI: 10.1002/adma.201290262

      Thumbnail image of graphical abstract

      The ability of ionic liquids to solvate inorganic salts completely has to date never been employed in the synthesis of complex inorganic materials. Avinash J. Patil, Simon R. Hall, and co-workers demonstrate on page 5767 that complex functional oxides, even those traditionally considered extremely difficult to synthesize in bulk, such as quinternary superconductors, are produced with no impurity phases and on timescales that are much shorter than other synthetic techniques. Cover image courtesy of André Janela.

  3. Back Cover

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Back Cover
    5. Masthead
    6. Contents
    7. Review
    8. Communications
    9. Frontispiece
    10. Communications
    11. Frontispiece
    12. Communications
    1. Micropatterning: Tomography and Static-Mechanical Properties of Adherent Cells (Adv. Mater. 42/2012) (page 5774)

      Siowling Soh, Kristiana Kandere-Grzybowska, Goher Mahmud, Sabil Huda, Alexander Z. Patashinski and Bartosz A. Grzybowski

      Version of Record online: 2 NOV 2012 | DOI: 10.1002/adma.201290263

      Thumbnail image of graphical abstract

      A tomography approach is used to reconstruct 3D cell shapes and the shapes/positions of the nuclei within these cells simultaneously. Bartosz A. Grzybowski, Kristiana Kandere-Grzybowska and co-workers show on page 5719 that cells subjected to well-defined microconfinements of various diameters allow for relating the steady-state shapes of cells to their staticmechanical properties. The observed shapes show striking regularities between different cell types and all fit to a model that takes into account the cell membrane, cortical actin, and the nucleus.

  4. Masthead

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Back Cover
    5. Masthead
    6. Contents
    7. Review
    8. Communications
    9. Frontispiece
    10. Communications
    11. Frontispiece
    12. Communications
    1. Masthead: (Adv. Mater. 42/2012)

      Version of Record online: 2 NOV 2012 | DOI: 10.1002/adma.201290264

  5. Contents

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Back Cover
    5. Masthead
    6. Contents
    7. Review
    8. Communications
    9. Frontispiece
    10. Communications
    11. Frontispiece
    12. Communications
  6. Review

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Back Cover
    5. Masthead
    6. Contents
    7. Review
    8. Communications
    9. Frontispiece
    10. Communications
    11. Frontispiece
    12. Communications
    1. Advanced Electron Microscopy for Advanced Materials (pages 5655–5675)

      Gustaaf Van Tendeloo, Sara Bals, Sandra Van Aert, Jo Verbeeck and Dirk Van Dyck

      Version of Record online: 21 AUG 2012 | DOI: 10.1002/adma.201202107

      Thumbnail image of graphical abstract

      Recent advances in electron microscopy enable a complete characterization of a broad range of materials. Such analyses (see figure from left to right) reveal the morphology of nanocrystals, valence state of individual atomic columns, geometry of ultrasmall clusters as well as picometer displacements at interfaces. Also 3D atomic resolution is nowadays possible.

  7. Communications

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Back Cover
    5. Masthead
    6. Contents
    7. Review
    8. Communications
    9. Frontispiece
    10. Communications
    11. Frontispiece
    12. Communications
    1. Joining the Un-Joinable: Adhesion Between Low Surface Energy Polymers Using Tetrapodal ZnO Linkers (pages 5676–5680)

      Xin Jin, Jan Strueben, Lars Heepe, Alexander Kovalev, Yogendra K. Mishra, Rainer Adelung, Stanislav N. Gorb and Anne Staubitz

      Version of Record online: 24 AUG 2012 | DOI: 10.1002/adma.201201780

      Thumbnail image of graphical abstract

      Tetrapodal ZnO crystals are used for mechanical interlocking of PTFE and cross-linked PDMS, classically non-adhesive polymers. This novel approach is straightforward and easily applicable and leads to a peel strength that is higher than 200 N m−1 without chemical modification of the surfaces. The shape of these fillers emerged as a crucial aspect of the interlocking mechanism.

    2. Optical Modulation Based on Direct Photon-Plasmon Coupling in Organic/Metal Nanowire Heterojunctions (pages 5681–5686)

      Yongli Yan, Chuang Zhang, Jian Yao Zheng, Jiannian Yao and Yong Sheng Zhao

      Version of Record online: 21 AUG 2012 | DOI: 10.1002/adma.201202698

      Thumbnail image of graphical abstract

      Surface plasmon polaritons (SPPs) can be launched with an organic nanowire that serves as both light source and dielectric waveguide in a single organic/metal nanowire heterojunction. Efficient modulation of the output signals from the silver tip can be achieved via the alternation of incident polarizations, which is further used to design and realize prototypical photonic-plasmonic logic devices. These findings are essential for incorporating plasmonic waveguides as practical components into hybrid high-capacity photonic circuits.

  8. Frontispiece

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Back Cover
    5. Masthead
    6. Contents
    7. Review
    8. Communications
    9. Frontispiece
    10. Communications
    11. Frontispiece
    12. Communications
    1. Patterning: High Aspect Ratio Sub-15 nm Silicon Trenches From Block Copolymer Templates (Adv. Mater. 42/2012) (page 5687)

      Xiaodan Gu, Zuwei Liu, Ilja Gunkel, S. T. Chourou, Sung Woo Hong, Deirdre L. Olynick and Thomas P. Russell

      Version of Record online: 2 NOV 2012 | DOI: 10.1002/adma.201290259

      Thumbnail image of graphical abstract

      On page 5688, Thomas P. Russell, Deirdre L. Olynick, and co-workers show that high-aspect-ratio sub-15-nm silicon nanotrenches can be directly patterned from low temperature plasma etching of a block copolymer mask. This method allows the patterning of silicon with sub-15-nm structures on wafer size scale, and with high thoughput and relatively low cost.

  9. Communications

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Back Cover
    5. Masthead
    6. Contents
    7. Review
    8. Communications
    9. Frontispiece
    10. Communications
    11. Frontispiece
    12. Communications
    1. High Aspect Ratio Sub-15 nm Silicon Trenches From Block Copolymer Templates (pages 5688–5694)

      Xiaodan Gu, Zuwei Liu, Ilja Gunkel, S. T. Chourou, Sung Woo Hong, Deirdre L. Olynick and Thomas P. Russell

      Version of Record online: 20 AUG 2012 | DOI: 10.1002/adma.201202361

      Thumbnail image of graphical abstract

      High-aspect-ratio sub-15-nm silicon trenches are fabricated directly from plasma etching of a block copolymer mask. A novel method that combines a block copolymer reconstruction process and reactive ion etching is used to make the polymer mask. Silicon trenches are characterized by various methods and used as a master for subsequent imprinting of different materials. Silicon nanoholes are generated from a block copolymer with cylindrical microdomains oriented normal to the surface.

    2. Oriented Graphene Nanoribbon Yarn and Sheet from Aligned Multi-Walled Carbon Nanotube Sheets (pages 5695–5701)

      Javier Carretero–González, Elizabeth Castillo–Martínez, Marcio Dias–Lima, Muge Acik, Duncan M. Rogers, Justin Sovich, Carter S. Haines, Xavier Lepró, Mikhail Kozlov, Anvar Zhakidov, Yves Chabal and Ray H. Baughman

      Version of Record online: 22 AUG 2012 | DOI: 10.1002/adma.201201602

      Thumbnail image of graphical abstract

      Highly oriented graphene nanoribbons sheets and yarns are produced by chemical unzipping of self-standing multiwalled carbon nanotube (MWNT) sheets. The as-produced yarns – after being chemically and thermally reduced – exhibit a good mechanical, electrical, and electrochemical performance.

  10. Frontispiece

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Back Cover
    5. Masthead
    6. Contents
    7. Review
    8. Communications
    9. Frontispiece
    10. Communications
    11. Frontispiece
    12. Communications
    1. Heterocyclic Microporous Polymers: Hypercrosslinked Aromatic Heterocyclic Microporous Polymers: A New Class of Highly Selective CO2 Capturing Materials (Adv. Mater. 42/2012) (page 5702)

      Yali Luo, Buyi Li, Wei Wang, Kangbing Wu and Bien Tan

      Version of Record online: 2 NOV 2012 | DOI: 10.1002/adma.201290260

      Thumbnail image of graphical abstract

      On page 5703, Bien Tan and co-workers demonstrate an easy and straightforward route for the preparation of aromatic heterocycle-based microporous organic polymers. Owing to the narrow pore system and the heteroatom-rich pore surface, these networks exhibit large CO2 adsorption capacity and high selectivity toward CO2/N2. The frontispiece shows the density map of the adsorbed CO2 molecules in the simulated microporous structure.

  11. Communications

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Back Cover
    5. Masthead
    6. Contents
    7. Review
    8. Communications
    9. Frontispiece
    10. Communications
    11. Frontispiece
    12. Communications
    1. Hypercrosslinked Aromatic Heterocyclic Microporous Polymers: A New Class of Highly Selective CO2 Capturing Materials (pages 5703–5707)

      Yali Luo, Buyi Li, Wei Wang, Kangbing Wu and Bien Tan

      Version of Record online: 25 SEP 2012 | DOI: 10.1002/adma.201202447

      Thumbnail image of graphical abstract

      Aromatic heterocyclic microporous polymers with high surface areas are obtained by directly crosslinking of the heterocyclic monomers under mild conditions. Owing to the narrow pore system and the heteroatom-rich pore surface, these networks exhibit high CO2 adsorption capacity and selectivity. At 273 K, the CO2/N2 selectivity of Py-1 is about 117, which is among the highest the reported microporous materials.

    2. Fabrication of Vertically Well-Aligned P(VDF-TrFE) Nanorod Arrays (pages 5708–5712)

      Sehoon Oh, Yeontae Kim, Yoon-Young Choi, Dongjin Kim, Hyunwoo Choi and Kwangsoo No

      Version of Record online: 20 AUG 2012 | DOI: 10.1002/adma.201201940

      Thumbnail image of graphical abstract

      By combining the merits of traditional template-assisted methods for polymer nanostructure fabrication, we demonstrate an immersion crystallization process that combines features of polymer crystallization and template removal simultaneously. Well-aligned poly(vinylidene fluoride-trifluoroethylene) copolymer nanorod arrays are prepared for the first time via this simple and convenient new method.

    3. Fiber Supercapacitors Utilizing Pen Ink for Flexible/Wearable Energy Storage (pages 5713–5718)

      Yongping Fu, Xin Cai, Hongwei Wu, Zhibin Lv, Shaocong Hou, Ming Peng, Xiao Yu and Dechun Zou

      Version of Record online: 31 AUG 2012 | DOI: 10.1002/adma.201202930

      Thumbnail image of graphical abstract

      A novel type of flexible fiber/wearable supercapacitor that is composed of two fiber electrodes – a helical spacer wire and an electrolyte – is demonstrated. In the carbon-based fiber supercapacitor (FSC), which has high capacitance performance, commercial pen ink is directly utilized as the electrochemical material. FSCs have potential benefits in the pursuit of low-cost, large-scale, and efficient flexible/wearable energy storage systems.

    4. Tomography and Static-Mechanical Properties of Adherent Cells (pages 5719–5726)

      Siowling Soh, Kristiana Kandere-Grzybowska, Goher Mahmud, Sabil Huda, Alexander Z. Patashinski and Bartosz A. Grzybowski

      Version of Record online: 13 AUG 2012 | DOI: 10.1002/adma.201200492

      Thumbnail image of graphical abstract

      A tomography approach is used to reconstruct 3D cell shapes and, simultaneously, the shapes/positions of the nuclei within these cells. Subjecting the cells to well-defined microconfinements of various diameters allow for relating the steady-state shapes of cells to their static-mechanical properties. The observed shapes show striking regularities between different cell types and all fit to a model that takes into account the cell membrane, cortical actin, and the nucleus.

    5. In Situ Electrochemical Deposition and Doping of C60 Films Applied to High-Performance Inverted Organic Photovoltaics (pages 5727–5731)

      Cheng Gu, Zhongbo Zhang, Shuheng Sun, Yuyu Pan, Chengmei Zhong, Ying Lv, Mao Li, Katsuhiko Ariga, Fei Huang and Yuguang Ma

      Version of Record online: 14 SEP 2012 | DOI: 10.1002/adma.201202569

      Thumbnail image of graphical abstract

      Novel C60-based cross-linked films formed by electrodeposition are produced and used as the electron-collection layer in inverted polymer solar cells (PSCs). The electrodeposited films exhibit a low work function of 4.2 eV and the PSCs perform well, with power conversion efficiencies of up to 6.31%. This new kind of electrodeposited film affords more opportunities to develop modified electrodes with a low work function.

    6. Solution-Processable Molecular Cage Micropores for Hierarchically Porous Materials (pages 5732–5737)

      Tom Hasell, Haifei Zhang and Andrew I. Cooper

      Version of Record online: 29 AUG 2012 | DOI: 10.1002/adma.201202000

      Thumbnail image of graphical abstract

      Macroscopic inorganic porous beads are imbibed with a “porous molecular additive” by simple solution processing techniques, resulting in controllable loading and increased surface area. The porous additive consists of soluble organic cage molecules that precipitate as microporous crystals when solutions of opposite chirality are mixed.

    7. Rebounding Droplet-Droplet Collisions on Superhydrophobic Surfaces: from the Phenomenon to Droplet Logic (pages 5738–5743)

      Henrikki Mertaniemi, Robert Forchheimer, Olli Ikkala and Robin H. A. Ras

      Version of Record online: 4 SEP 2012 | DOI: 10.1002/adma.201202980

      Thumbnail image of graphical abstract

      When water droplets impact each other while traveling on a superhydrophobic surface, we demonstrate that they are able to rebound like billiard balls. We present elementary Boolean logic operations and a flip-flop memory based on these rebounding water droplet collisions. Furthermore, bouncing or coalescence can be easily controlled by process parameters. Thus by the controlled coalescence of reactive droplets, here using the quenching of fluorescent metal nanoclusters as a model reaction, we also demonstrate an elementary operation for programmable chemistry.

    8. Single Crystals of 5,5′-Bis(4′-methoxybiphenyl-4-yl)-2,2′-bithiophene for Organic Laser Media (pages 5744–5749)

      Hitoshi Mizuno, U. Haku, Yusuke Marutani, Atsushi Ishizumi, Hisao Yanagi, Fumio Sasaki and Shu Hotta

      Version of Record online: 29 AUG 2012 | DOI: 10.1002/adma.201202470

      Thumbnail image of graphical abstract

      Room temperature lasing was stably observed in air from an orthorhombic crystal of 5,5′-bis(4′-methoxybiphenyl-4-yl)-2,2′-bithiophene (BP2T-OMe). A pair of parallel {110} facets of the single crystal acted as effective Fabry-Pérot mirrors. This prominent lasing is based on high group refractive index (3.5) and Q factor (4500) of the orthorhombic crystal resonator indicating a promising potential of BP2T-OMe for organic laser media.

    9. High-Performance Organic Thin-Film Transistor Based on a Dipolar Organic Semiconductor (pages 5750–5754)

      Lizhen Huang, Matthias Stolte, Hannah Bürckstümmer and Frank Würthner

      Version of Record online: 17 AUG 2012 | DOI: 10.1002/adma.201202441

      Thumbnail image of graphical abstract

      A merocyanine dye with an outstandingly large dipole moment of 14 Debye affords thin-film transistors with 0.18 cm2V−1s−1 hole mobility and a 106 on/off ratio. These results suggest that molecules that lack symmetry and possess large dipole moments can perform excellent charge carrier transport contrary to established molecular semiconductor design strategies.

    10. Theranostic Probe Based on Lanthanide-Doped Nanoparticles for Simultaneous In Vivo Dual-Modal Imaging and Photodynamic Therapy (pages 5755–5761)

      Yong Il Park, Hyung Min Kim, Jeong Hyun Kim, Kyung Chul Moon, Byeongjun Yoo, Kang Taek Lee, Nohyun Lee, Yoonseok Choi, Wooram Park, Daishun Ling, Kun Na, Woo Kyung Moon, Seung Hong Choi, Hong Seok Park, Soo-Young Yoon, Yung Doug Suh, Sung Ho Lee and Taeghwan Hyeon

      Version of Record online: 23 AUG 2012 | DOI: 10.1002/adma.201202433

      Thumbnail image of graphical abstract

      Dual-modal in vivo tumor imaging and photodynamic therapy using hexagonal NaYF4:Yb,Er/NaGdF4 core–shell upconverting nanoparticles combined with a photosensitizer, chlorin e6, is reported. Tumors can be clearly observed not only in the upconversion luminescence image but also in the magnetic resonance image. In vivo photodynamic therapy by systemic administration is demonstrated under 980 nm irradiation.

    11. Facile Shape Control of Co3O4 and the Effect of the Crystal Plane on Electrochemical Performance (pages 5762–5766)

      Xiaoling Xiao, Xiangfeng Liu, Hu Zhao, Dongfeng Chen, Fengzhen Liu, Junhui Xiang, Zhongbo Hu and Yadong Li

      Version of Record online: 22 AUG 2012 | DOI: 10.1002/adma.201202271

      Thumbnail image of graphical abstract

      Co3O4 with three different crystal plane structures – cubes bounded by {001}planes, truncated octahedra enclosed by {111} and {001} planes, and octahedra with exposed {111}planes – is synthesized using a very simple one-step hydrothermal method. The three kinds of Co3O4 exhibit significantly different electrochemical performances and the effect of different exposed crystal planes on the electrochemical performance of Co3O4 is comprehensively studied.

    12. A New General Synthetic Strategy for Phase-Pure Complex Functional Materials (pages 5767–5772)

      David C. Green, Stefan Glatzel, Andrew M. Collins, Avinash J. Patil and Simon R. Hall

      Version of Record online: 24 AUG 2012 | DOI: 10.1002/adma.201202683

      Thumbnail image of graphical abstract

      The ability of ionic liquids to solvate inorganic salts completely has to date never been employed in the synthesis of complex inorganic materials. Here, we demonstrate that complex functional oxides, even those traditionally considered extremely difficult to synthesize in bulk, such as quinternary superconductors, are produced with no impurity phases and on timescales that are much shorter than other synthetic techniques.

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