Advanced Functional Materials

Cover image for Vol. 23 Issue 34

September 14, 2013

Volume 23, Issue 34

Pages 4165–4268

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      Silver Nanowires: Room-Temperature Nanosoldering of a Very Long Metal Nanowire Network by Conducting-Polymer-Assisted Joining for a Flexible Touch-Panel Application (Adv. Funct. Mater. 34/2013) (page 4165)

      Jinhwan Lee, Phillip Lee, Ha Beom Lee, Sukjoon Hong, Inhwa Lee, Junyeob Yeo, Seung Seob Lee, Taek-Soo Kim, Dongjin Lee and Seung Hwan Ko

      Version of Record online: 9 SEP 2013 | DOI: 10.1002/adfm.201370168

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      D. Lee, S. H. Ko, and co-workers develop an alternative to rigid ITO transparent conductors. On page 4171, conducting polymer-assisted nanosoldering of Ag nanowires allows them to develop nanowire percolation networks, which form highly flexible and stretchable transparent conductors. A large area transparent conductor and a flexible touch panel on a non-flat surface are fabricated, demonstrating the possibility of cost-effective mass production as well as the applicability of these networks to unconventional, non-flat surfaces.

  2. Inside Front Cover

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      Biomimetics: Unlocking the Latent Antimicrobial Potential of Biomimetically Synthesized Inorganic Materials (Adv. Funct. Mater. 34/2013) (page 4166)

      Matthew B. Dickerson, Wanda J. Lyon, William E. Gruner, Peter A. Mirau, Michael L. Jespersen, Yunnan Fang, Kenneth H. Sandhage and Rajesh R. Naik

      Version of Record online: 9 SEP 2013 | DOI: 10.1002/adfm.201370169

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      On page 4236, bio-inorganic composite materials are functionalized under benign reaction conditions by R. R. Naik and co-workers. The nitrogen moieties associated with the biopolymers within the composite are chlorinated to yield halamine compounds. Bacterial spores are localized on the surfaces of these chlorinated Coscinodiscus granii frustules, and then the release of oxidizing halogens from their surfaces is capable of killing bacteria and inactivating the spores.

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      Organic Solar Cells: Highly Efficient and Bendable Organic Solar Cells with Solution-Processed Silver Nanowire Electrodes (Adv. Funct. Mater. 34/2013) (page 4272)

      Myungkwan Song, Dae Sung You, Kyounga Lim, Sujin Park, Sunghoon Jung, Chang Su Kim, Dong-Ho Kim, Do-Geun Kim, Jongk-Kuk Kim, Juyun Park, Yong-Cheol Kang, Jinhee Heo, Sung-Ho Jin, Jong Hyun Park and Jae-Wook Kang

      Version of Record online: 9 SEP 2013 | DOI: 10.1002/adfm.201370170

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      J. H. Park, J.-W. Kang, and co-workers report a highly bendable and efficient organic solar cell. On page 4177, it is created using solution-processed metal nanowire electrodes on top of a plastic substrate. The solar cell device exhibits a high powerconversion efficiency and outstanding mechanical bending characteristics.

  4. Masthead

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      Masthead: (Adv. Funct. Mater. 34/2013)

      Version of Record online: 9 SEP 2013 | DOI: 10.1002/adfm.201370171

  5. Contents

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Back Cover
    5. Masthead
    6. Contents
    7. Full Papers
    1. You have free access to this content
  6. Full Papers

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Back Cover
    5. Masthead
    6. Contents
    7. Full Papers
    1. Room-Temperature Nanosoldering of a Very Long Metal Nanowire Network by Conducting-Polymer-Assisted Joining for a Flexible Touch-Panel Application (pages 4171–4176)

      Jinhwan Lee, Phillip Lee, Ha Beom Lee, Sukjoon Hong, Inhwa Lee, Junyeob Yeo, Seung Seob Lee, Taek-Soo Kim, Dongjin Lee and Seung Hwan Ko

      Version of Record online: 5 APR 2013 | DOI: 10.1002/adfm.201203802

      Thumbnail image of graphical abstract

      A very simple, room-temperature nanosoldering of a Ag nanowire percolation network by conducting-polymer-assisted nanowire joining is developed to demonstrate highly flexible, and even stretchable, transparent conductors. Furthermore, a large area (A4-size) transparent conductor and a flexible touch panel on a non-flat surface are fabricated to demonstrate the possibility of cost-effective mass production and the applicability to the unconventional arbitrary soft, non-flat surfaces.

    2. Highly Efficient and Bendable Organic Solar Cells with Solution-Processed Silver Nanowire Electrodes (pages 4177–4184)

      Myungkwan Song, Dae Sung You, Kyounga Lim, Sujin Park, Sunghoon Jung, Chang Su Kim, Dong-Ho Kim, Do-Geun Kim, Jongk-Kuk Kim, Juyun Park, Yong-Cheol Kang, Jinhee Heo, Sung-Ho Jin, Jong Hyun Park and Jae-Wook Kang

      Version of Record online: 10 APR 2013 | DOI: 10.1002/adfm.201202646

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      Highly bendable and efficient organic solar cells are developed using solution-processed silver nanowires. The electrode and solar cell characterizations are also presented with the devices showing high performance and flexibility.

    3. Time-Resolved Evolution of Short- and Long-Range Order During the Transformation of Amorphous Calcium Carbonate to Calcite in the Sea Urchin Embryo (pages 4185–4194)

      Chantel C. Tester, Ching-Hsuan Wu, Minna R. Krejci, Laura Mueller, Alex Park, Barry Lai, Si Chen, Chengjun Sun, Mahaling Balasubramanian and Derk Joester

      Version of Record online: 27 MAR 2013 | DOI: 10.1002/adfm.201203400

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      Strontium is used as a probe to investigate the structural transformation of amorphous calcium carbonate in sea urchin larval spicules. Sr K-edge X-ray absorption spectroscopy reveals that crystallization occurs in three stages: 1) hydrated amorphous calcium carbonate, 2) disordered calcite, and 3) mature calcite.

    4. Carboxylates versus Fluorines: Boosting the Emission Properties of Commercial BODIPYs in Liquid and Solid Media (pages 4195–4205)

      Gonzalo Durán-Sampedro, Antonia R. Agarrabeitia, Luis Cerdán, M. Eugenia Pérez-Ojeda, Angel Costela, Inmaculada García-Moreno, Ixone Esnal, Jorge Bañuelos, Iñigo López Arbeloa and María J. Ortiz

      Version of Record online: 26 MAR 2013 | DOI: 10.1002/adfm.201300198

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      The development of new O-BODIPYs, synthesized via the replacement of fluorine atoms by carboxylate groups in commercial (4,4-difluoro-4-bora-3a,4a-diaza-s-indacene) (F-BODIPYs), is a successful strategy to obtain optimized laser dyes. Poly(methyl methacrylate) (PMMA) doped with these new derivatives leads to laser materials that are economically affordable and have optimized emission properties in the visible spectral region.

    5. Manipulating the Hysteresis in Poly(vinyl alcohol)-Dielectric Organic Field-Effect Transistors Toward Memory Elements (pages 4206–4214)

      Tzung-Da Tsai, Jer-Wei Chang, Ten-Chin Wen and Tzung-Fang Guo

      Version of Record online: 26 MAR 2013 | DOI: 10.1002/adfm.201203694

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      The use of non-ferroelectric gate dielectrics to fabricate organic field-effect transistor memory elements by manipulating the molecular dipoles in the dielectric layer is highlighted. The applied gate bias partially aligns the orientations of the hydroxyl groups perpendicular to the substrate at the pentacene/dielectrics interface, which trap charges and cause the hysteresis.

    6. Hierarchical Structuring in Block Copolymer Nanocomposites through Two Phase-Separation Processes Operating on Different Time Scales (pages 4215–4226)

      Elina Ploshnik, Karol M. Langner, Amit Halevi, Meirav Ben-Lulu, Axel H. E. Müller, Johannes G. E. M. Fraaije, G. J. Agur Sevink and Roy Shenhar

      Version of Record online: 27 MAR 2013 | DOI: 10.1002/adfm.201300091

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      Combining block copolymers with nanoparticles that are highly incompatible with one block and only slightly incompatible with the other leads to hierarchical nanoparticle structures. While the block copolymer domains evolve, the nanoparticles segregate to the least incompatible domain. Then, they phase separate from it, forming hexagonally packed arrays within its confines, where interparticle distance is determined by the ligand length.

    7. Surface-Confined Heterometallic Molecular Dyads: Merging the Optical and Electronic Properties of Fe, Ru, and Os Terpyridyl Complexes (pages 4227–4235)

      Tarkeshwar Gupta, Prakash Chandra Mondal, Anup Kumar, Yekkoni Lakshmanan Jeyachandran and Michael Zharnikov

      Version of Record online: 27 MAR 2013 | DOI: 10.1002/adfm.201203404

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      Fabrication of surface-confined heterometallic molecular dyads (SURHMDs) composed of optically rich and redox-active molecular building blocks yields enlargement of optical window in the visible region along with occurrence of multiple redox states at low potential. The copper-mediated intramolecular electronic communication between distinct metal centers can provide potential alternatives to the prototype semiconductor-based memory devices, information processing units, or smart photonic materials.

    8. Unlocking the Latent Antimicrobial Potential of Biomimetically Synthesized Inorganic Materials (pages 4236–4245)

      Matthew B. Dickerson, Wanda J. Lyon, William E. Gruner, Peter A. Mirau, Michael L. Jespersen, Yunnan Fang, Kenneth H. Sandhage and Rajesh R. Naik

      Version of Record online: 5 APR 2013 | DOI: 10.1002/adfm.201202851

      Thumbnail image of graphical abstract

      Bio-inspired synthesis techniques are capable of producing bio-inorganic composite materials under benign reaction conditions. A facile method for the antimicrobial functionalization of such composites is described. The nitrogen moieties associated with the biopolymers entrapped within the hybrid material are chlorinated in situ to yield halamine compounds. These halamine-charged materials exhibit potent bactericidal and sporicidal activity.

    9. Controllable Synthesis of Mesoporous TiO2 Hollow Shells: Toward an Efficient Photocatalyst (pages 4246–4254)

      Ji Bong Joo, Ilkeun Lee, Michael Dahl, Geon Dae Moon, Francisco Zaera and Yadong Yin

      Version of Record online: 26 MAR 2013 | DOI: 10.1002/adfm.201300255

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      A simple yet effective method is developed for the synthesis of hollow mesoporous TiO2 nanoshells with well-controlled crystallinity and phase. It is now convenient to optimize their structures for enhanced performance in photocatalysis.

    10. Plasmonic Electrically Functionalized TiO2 for High-Performance Organic Solar Cells (pages 4255–4261)

      Di Zhang, Wallace C. H. Choy, Fengxian Xie, Wei E. I. Sha, Xinchen Li, Baofu Ding, Kai Zhang, Fei Huang and Yong Cao

      Version of Record online: 27 MAR 2013 | DOI: 10.1002/adfm.201203776

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      Plasmonic-induced carrier extraction enhancements (plasmonic-electrical effects) in organic solar cells (OSCs) are investigated. Using a nanoparticle (NP)-TiO2 composite, an enhanced efficiency of 8.74% is reached. The device can efficiently operate at plasmonic wavelengths far longer than the original UV region. The enhancement is attributed to the plasmonic-induced charge injection process. This mechanism favors trap filling in TiO2, which facilitates carrier transport in OSCs.

    11. Origin of Reduced Bimolecular Recombination in Blends of Conjugated Polymers and Fullerenes (pages 4262–4268)

      D. H. K. Murthy, Armantas Melianas, Zheng Tang, Gytis Juška, Kȩstutis Arlauskas, Fengling Zhang, Laurens D. A. Siebbeles, Olle Inganäs and Tom J. Savenije

      Version of Record online: 2 APR 2013 | DOI: 10.1002/adfm.201203852

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      The measured bimolecular recombination rate of electrons and holes in a polymer:fullerene blend is 20 times smaller than the Langevin rate. The reduced rate is explained in terms of dissociation of electron-hole encounter complexes into free charge carriers rather than decay to the ground state.

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