Advanced Materials

Cover image for Vol. 29 Issue 7

February 17, 2017

Volume 29, Issue 7

  1. Cover Picture

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    14. Communications
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      Spontaneous Assembly: Swarm Intelligence-Inspired Spontaneous Fabrication of Optimal Interconnect at the Micro/Nanoscale (Adv. Mater. 7/2017)

      Meng Su, Zhandong Huang, Yong Huang, Shuoran Chen, Xin Qian, Wenbo Li, Yifan Li, Weihua Pei, Hongda Chen, Fengyu Li and Yanlin Song

      Version of Record online: 13 FEB 2017 | DOI: 10.1002/adma.201770043

      Thumbnail image of graphical abstract

      In article number 1605223, Fengyu Li, Yanlin Song, and co-workers demonstrate a swarm-intelligence-inspired spontaneous process to assemble nanoparticles into an optimal interconnect between certain nodes on various substrates. The optimal interconnect leads to a 65.9% decrease in electromagnetic interference, a 17.1% decrease in delay, and a 24.5% decrease in energy-delay.

  2. Inside Front Cover

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      Metallic Networks: Direct Fabrication of 3D Metallic Networks and Their Performance (Adv. Mater. 7/2017)

      Racheli Ron, David Gachet, Katya Rechav and Adi Salomon

      Version of Record online: 13 FEB 2017 | DOI: 10.1002/adma.201770044

      Thumbnail image of graphical abstract

      In article number 1604018, Adi Salomon and co-workers produce 3D networked-metals (“Netals”) on a large scale. These “Netals” interact with a broad spectrum of solar light because they are composed of multimodal nanoparticles and cavities. Each of them resonantly interacts with a distinct solar-light wavelength. These Netals can be used to drive photocatalytic processes because of their large surface area and hot-carrier generation upon interaction with light.

  3. Inside Back Cover

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      Graphene: Probing Bilayer Grain Boundaries in Large-Area Graphene with Tip-Enhanced Raman Spectroscopy (Adv. Mater. 7/2017)

      Kyoung-Duck Park, Markus B. Raschke, Joanna M. Atkin, Young Hee Lee and Mun Seok Jeong

      Version of Record online: 13 FEB 2017 | DOI: 10.1002/adma.201770048

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      A twisted stacking bilayer structure of grain boundaries in large-area graphene is revealed by Mun Seok Jeong and co-workers in article number 1603601 from high-spatial-resolution (<18 nm) correlated analysis of topography, near-field scattering, and hyperspectral tip-enhanced Raman spectroscopy (TERS) imaging. The demonstrated analytical results of bilayer grain boundaries deliver an informative guide toward the design of future graphene devices; furthermore, this approach will be generally applicable to a range of two-dimensional materials beyond graphene.

  4. Back Cover

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      Nanovaccines: Multistaged Nanovaccines Based on Porous Silicon@Acetalated Dextran@Cancer Cell Membrane for Cancer Immunotherapy (Adv. Mater. 7/2017)

      Flavia Fontana, Mohammad-Ali Shahbazi, Dongfei Liu, Hongbo Zhang, Ermei Mäkilä, Jarno Salonen, Jouni T. Hirvonen and Hélder A. Santos

      Version of Record online: 13 FEB 2017 | DOI: 10.1002/adma.201770049

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      In article 1603239, Flavia Fontana, Hélder A. Santos, and co-workers develop an innovative cancer nanovaccine by merging the adjuvant properties of the nanoparticles produced by nanoprecipitation in a microfluidic glass capillary device with high reproducibility, together with a biomimetic source of antigens derived from cancer-cell membranes. The nanovectors induce maturation of antigen-presenting cells and secretion of pro-inflammatory cytokines in vitro.

  5. Masthead

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      Masthead: (Adv. Mater. 7/2017)

      Version of Record online: 13 FEB 2017 | DOI: 10.1002/adma.201770046

  6. Contents

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      Contents: (Adv. Mater. 7/2017)

      Version of Record online: 13 FEB 2017 | DOI: 10.1002/adma.201770045

  7. Correction

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      Holographic Structuring of Elastomer Actuator: First True Monolithic Tunable Elastomer Optics

      Alexander Ryabchun, Matthias Kollosche, Michael Wegener and Oksana Sakhno

      Version of Record online: 13 FEB 2017 | DOI: 10.1002/adma.201606926

      This article corrects:

      Holographic Structuring of Elastomer Actuator: First True Monolithic Tunable Elastomer Optics

      Vol. 28, Issue 46, 10217–10223, Version of Record online: 7 OCT 2016

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      Direct Fabrication of 3D Metallic Networks and Their Performance

      Racheli Ron, David Gachet, Katya Rechav and Adi Salomon

      Version of Record online: 13 FEB 2017 | DOI: 10.1002/adma.201700219

      This article corrects:

      Direct Fabrication of 3D Metallic Networks and Their Performance

      Vol. 29, Issue 7, Version of Record online: 12 DEC 2016

  8. Essay

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    14. Communications
    1. Graphene-Based Biosensors: Going Simple

      Eden Morales-Narváez, Luis Baptista-Pires, Alejandro Zamora-Gálvez and Arben Merkoçi

      Version of Record online: 29 NOV 2016 | DOI: 10.1002/adma.201604905

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      Perspectives on a new generation of biosensing devices are discussed based on the synergy between flexible, lightweight, easy-to-use, versatile, and cost-effective materials (paper and plastic), along with the outstanding properties of graphene derivatives.

  9. Progress Reports

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    1. Targeting Nanocarriers with Anisamide: Fact or Artifact?

      Athanasia Dasargyri, Carole D. Kümin and Jean-Christophe Leroux

      Version of Record online: 25 NOV 2016 | DOI: 10.1002/adma.201603451

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      Anisamide is a targeting ligand that is being investigated for the targeting of tumoral tissues by nanocarriers. This ligand, inspired by the structure of benzamide-based tumor-imaging compounds, is believed to interact with the Sigma-1 receptor, but an important body of evidence questions this mechanism of action. A possible nonspecific effect could explain the variable and limited antitumor efficacy of anisamide-functionalized nanoformulations tested in vivo, none of which have reached the clinical stage.

  10. Reviews

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    14. Communications
    1. Electrically Rechargeable Zinc–Air Batteries: Progress, Challenges, and Perspectives

      Jing Fu, Zachary Paul Cano, Moon Gyu Park, Aiping Yu, Michael Fowler and Zhongwei Chen

      Version of Record online: 28 NOV 2016 | DOI: 10.1002/adma.201604685

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      Electrically rechargeable zinc–air batteries lie at the heart of emerging energy-storage technologies, such as electric vehicles and wearable devices, benefiting from their high energy density and environmental friendliness. The current status and challenges faced by electrically rechargeable zinc–air batteries are discussed in detail. The potential solutions to these problems are thoroughly investigated.

  11. Communications

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    1. High-Operating-Temperature Direct Ink Writing of Mesoscale Eutectic Architectures

      J. William Boley, Kundan Chaudhary, Thomas J. Ober, Mohammadreza Khorasaninejad, Wei Ting Chen, Erik Hanson, Ashish Kulkarni, Jaewon Oh, Jinwoo Kim, Larry K. Aagesen, Alexander Y. Zhu, Federico Capasso, Katsuyo Thornton, Paul V. Braun and Jennifer A. Lewis

      Version of Record online: 15 DEC 2016 | DOI: 10.1002/adma.201604778

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      High-operating-temperature direct ink writing (HOT-DIW) of mesoscale architectures that are composed of eutectic silver chloride–potassium chloride. The molten ink undergoes directional solidification upon printing on a cold substrate. The lamellar spacing of the printed features can be varied between approximately 100 nm and 2 µm, enabling the manipulation of light in the visible and infrared range.

    2. Swarm Intelligence-Inspired Spontaneous Fabrication of Optimal Interconnect at the Micro/Nanoscale

      Meng Su, Zhandong Huang, Yong Huang, Shuoran Chen, Xin Qian, Wenbo Li, Yifan Li, Weihua Pei, Hongda Chen, Fengyu Li and Yanlin Song

      Version of Record online: 7 DEC 2016 | DOI: 10.1002/adma.201605223

      Thumbnail image of graphical abstract

      A spontaneous process is demonstrated to assemble nanoparticles into an optimal interconnect, as natural systems spontaneously figure out the shortest path. The optimal interconnect leads to a 65.9% decrease in electromagnetic interference, a 17.1% decrease in delay, and a 24.5% decrease in energy-delay. It will be of great significance for interconnect fabrication of versatile electronic circuits.

    3. Direct Fabrication of 3D Metallic Networks and Their Performance

      Racheli Ron, David Gachet, Katya Rechav and Adi Salomon

      Version of Record online: 12 DEC 2016 | DOI: 10.1002/adma.201604018

      Thumbnail image of graphical abstract

      Fabrication of macroscopic nanoporous metallic networks is challenging, because it demands fine structures at the nanoscale over a large-scale. A technique to form pure scalable networks is introduced. The networked-metals (“Netals”) exhibit a strong interaction with light and indicate a large fraction of hot-electrons generation. These hot-electrons are available to derive photocatalytic processes.

      Corrected by:

      Correction: Direct Fabrication of 3D Metallic Networks and Their Performance

      Vol. 29, Issue 7, Version of Record online: 13 FEB 2017

    4. Probing Bilayer Grain Boundaries in Large-Area Graphene with Tip-Enhanced Raman Spectroscopy

      Kyoung-Duck Park, Markus B. Raschke, Joanna M. Atkin, Young Hee Lee and Mun Seok Jeong

      Version of Record online: 9 DEC 2016 | DOI: 10.1002/adma.201603601

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      The bilayer grain boundaries (GBs) in chemical-vapor-deposition-grown large-area graphene are identified using multispectral tip-enhanced Raman imaging with 18 nm spatial resolution. The misorientation angle of the bilayer GBs is determined from a quantitative analysis of the phonon-scattering properties associated with the modified electronic structure.

    5. Multistaged Nanovaccines Based on Porous Silicon@Acetalated Dextran@Cancer Cell Membrane for Cancer Immunotherapy

      Flavia Fontana, Mohammad-Ali Shahbazi, Dongfei Liu, Hongbo Zhang, Ermei Mäkilä, Jarno Salonen, Jouni T. Hirvonen and Hélder A. Santos

      Version of Record online: 23 DEC 2016 | DOI: 10.1002/adma.201603239

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      Immunoadjuvant porous silicon (PSi)-based nanovaccines are prepared by nanoprecipitation in a glass capillary microfluidics device. Vesicles, derived from cancer cell membranes encapsulating thermally oxidized PSi nanoparticles or PSi-polymer nanosystems binding a model antigen, are biocompatible over a wide range of concentrations, and show immunostimulant properties in human cells, promoting the expression of co-stimulatory signals and the secretion of pro-inflammatory cytokines.

    6. Stimulus-Responsive Micro-Supercapacitors with Ultrahigh Energy Density and Reversible Electrochromic Window

      Panpan Zhang, Feng Zhu, Faxing Wang, Jinhui Wang, Renhao Dong, Xiaodong Zhuang, Oliver G. Schmidt and Xinliang Feng

      Version of Record online: 6 DEC 2016 | DOI: 10.1002/adma.201604491

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      Stimulus-responsive micro-supercapacitors (SR-MSCs) with ultrahigh volumetric energy density and reversible electrochromic effect are successfully fabricated by employing a vanadium pentoxide and electrochemical exfoliated graphene-based hybrid nanopaper and viologen as electrode and stimulus-responsive material, respectively. The fabricated high-performance SR-MSCs offer new opportunities for intuitively observing the working state of energy devices without the aid of extra equipment and techniques.

    7. Confined Metastable 2-Line Ferrihydrite for Affordable Point-of-Use Arsenic-Free Drinking Water

      Avula Anil Kumar, Anirban Som, Paolo Longo, Chennu Sudhakar, Radha Gobinda Bhuin, Soujit Sen Gupta, Anshup, Mohan Udhaya Sankar, Amrita Chaudhary, Ramesh Kumar and Thalappil Pradeep

      Version of Record online: 5 DEC 2016 | DOI: 10.1002/adma.201604260

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      Arsenic-free drinking water, independent of electrical power and piped water supply, is possible only through advanced and affordable materials with large uptake capacities. Confined metastable 2-line ferrihydrite, stable at ambient temperature, shows continuous arsenic uptake in the presence of other complex species in natural drinking water and an affordable water-purification device is made using the same.

    8. Biomimicking of a Swim Bladder and Its Application as a Mini-Generator

      Mengmeng Song, Mengjiao Cheng, Meng Xiao, Lina Zhang, Guannan Ju and Feng Shi

      Version of Record online: 7 DEC 2016 | DOI: 10.1002/adma.201603312

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      A model fish with a man-made swim bladder achieves fast vertical motions based on density adjustments in a pressure-responsive way. When exposed to a magnetic field, a mini-generator is achieved by harvesting energy from the environment, working with pressure differences in the blood-pressure range and at the frequency of a beating heart.

    9. Phosphate Ion Functionalized Co3O4 Ultrathin Nanosheets with Greatly Improved Surface Reactivity for High Performance Pseudocapacitors

      Teng Zhai, Liming Wan, Shuo Sun, Qi Chen, Jiao Sun, Qiuying Xia and Hui Xia

      Version of Record online: 6 DEC 2016 | DOI: 10.1002/adma.201604167

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      A surface-modified Co3O4 ultrathin nanosheet (denoted as PCO) is reported via controllable phosphate ion functionalization for pseudocapacitors. An energy density of 71.6 W h kg−1 (at 1500 W kg−1) is achieved by the PCO-based pseudocapacitor. The unique porous nanosheet morphology, high surface reactivity, and fast electrode kinetics of PCO are found to be responsible for the enhanced pseudocapacitive performance.

    10. SWCNT-MoS2-SWCNT Vertical Point Heterostructures

      Jin Zhang, Yang Wei, Fengrui Yao, Dongqi Li, He Ma, Peng Lei, Hehai Fang, Xiaoyang Xiao, Zhixing Lu, Juehan Yang, Jingbo Li, Liying Jiao, Weida Hu, Kaihui Liu, Kai Liu, Peng Liu, Qunqing Li, Wei Lu, Shoushan Fan and Kaili Jiang

      Version of Record online: 6 DEC 2016 | DOI: 10.1002/adma.201604469

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      A vertical point heterostructure (VPH) is constructed by sandwiching a two-dimensional (2D) MoS2 flake with two cross-stacked metallic single-walled carbon nanotubes. It can be used as a field-effect transistor with high on/off ratio and a light detector with high spatial resolution. Moreover, the hybrid 1D–2D–1D VPHs open up new possibilities for nanoelectronics and nano-optoelectronics.

    11. π-Conjugated Lewis Base: Efficient Trap-Passivation and Charge-Extraction for Hybrid Perovskite Solar Cells

      Yuze Lin, Liang Shen, Jun Dai, Yehao Deng, Yang Wu, Yang Bai, Xiaopeng Zheng, Jiayu Wang, Yanjun Fang, Haotong Wei, Wei Ma, Xiao Cheng Zeng, Xiaowei Zhan and Jinsong Huang

      Version of Record online: 6 DEC 2016 | DOI: 10.1002/adma.201604545

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      A π-conjugated Lewis base is introduced into perovskite solar cells, namely, indacenodithiophene end-capped with 1.1-dicyanomethylene-3-indanone (IDIC), as a multifunctional interlayer, which combines efficient trap-passivation and electron-extraction. Perovskite solar cells with IDIC layers yield higher photovoltages and photocurrents, and 45% enhanced efficiency compared with control devices without IDIC.

    12. Atomic-Level-Designed Catalytically Active Palladium Atoms on Ultrathin Gold Nanowires

      Rui Liu, Li-Qiang Zhang, Cun Yu, Meng-Tao Sun, Jing-Fu Liu and Gui-Bin Jiang

      Version of Record online: 7 DEC 2016 | DOI: 10.1002/adma.201604571

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      A Ag monolayer facilitates the deposition of isolated Pd atoms rather than continuous ones on ultrathin Au nanowires. During the hydrogenation of nitrophenol and the electrooxidation of ethanol, these two groups of Pd atoms show distinctive but geometry-dependent catalytic activity. This new atomic geometry maneuvering strategy is ready for the atomically precise design of nanocatalysts.

    13. Pronounced Effects of a Triazine Core on Photovoltaic Performance–Efficient Organic Solar Cells Enabled by a PDI Trimer-Based Small Molecular Acceptor

      Yuwei Duan, Xiaopeng Xu, He Yan, Wenlin Wu, Zuojia Li and Qiang Peng

      Version of Record online: 6 DEC 2016 | DOI: 10.1002/adma.201605115

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      A novel-small molecular acceptor with electron-deficient 1,3,5-triazine as the core and perylene diimides as the arms is developed as the acceptor material for efficient bulk heterojunction organic solar cells with an efficiency of 9.15%.

    14. Nanoreactor of Nickel-Containing Carbon–Shells as Oxygen Reduction Catalyst

      Bing Li, Honggi Nam, Jiong Zhao, Jian Chang, Niranjanmurthi Lingappan, Fei Yao, Tae Hoon Lee and Young Hee Lee

      Version of Record online: 12 DEC 2016 | DOI: 10.1002/adma.201605083

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      A Pt-free nanoreactor, consisting of N-doped hollow carbon nanocapsules with encapsulated Ni nanoparticles, is developed for high-performance oxygen reduction reaction (ORR) catalyst. The nanoreactor effect improves its catalytic activity for ORR mainly in a 4e pathway. The presence of Ni nanoparticles within the nanoreactor significantly enhances the stability with a current retention of 90% after 40 h.

    15. A Novel and Generalized Lithium-Ion-Battery Configuration utilizing Al Foil as Both Anode and Current Collector for Enhanced Energy Density

      Bifa Ji, Fan Zhang, Maohua Sheng, Xuefeng Tong and Yongbing Tang

      Version of Record online: 12 DEC 2016 | DOI: 10.1002/adma.201604219

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      A novel battery configuration based on an aluminum foil anode and a conventional cathode is developed. The aluminum foil plays a dual role as both the active anode material and the current collector, which enhances the energy density of the packaged battery, and reduces the production cost. This generalized battery configuration has high potential for application in next-generation lithium-ion batteries.

  12. Frontispiece

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    14. Communications
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      Medical Devices: Nonlinear Frameworks for Reversible and Pluripotent Wetting on Topographic Surfaces (Adv. Mater. 7/2017)

      Junsoo Kim, Yifan Wang, Hyunchul Park, Min Cheol Park, Seung Eon Moon, Soon Man Hong, Chong Min Koo, Kahp-Yang Suh, Shu Yang and Hyesung Cho

      Version of Record online: 13 FEB 2017 | DOI: 10.1002/adma.201770047

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      Nonlinear frameworks organized in tandem are rationally designed by Hyesung Cho and co-workers in article 1605078 to address the conformal contact issue, especially upon a highly curvilinear topography. The wetting behavior of the presented layers is not only self-conformal against complex obstacles, but also reversible to be repeatedly addressed without mechanical failure. This framework helps to overcome the intrinsic limitation in wetting of rigid solid systems, which will be useful for future wearable devices and tissue engineering, which require conformal interplay with target surfaces.

  13. Communications

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    1. Nonlinear Frameworks for Reversible and Pluripotent Wetting on Topographic Surfaces

      Junsoo Kim, Yifan Wang, Hyunchul Park, Min Cheol Park, Seung Eon Moon, Soon Man Hong, Chong Min Koo, Kahp-Yang Suh, Shu Yang and Hyesung Cho

      Version of Record online: 9 DEC 2016 | DOI: 10.1002/adma.201605078

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      Soft, ultrathin frameworks nonlinearly organized in tandem are presented to realize both reversible and pluripotent wetting on topographic surfaces. A design rule is introduced by establishing and proving the theoretical model upon hierarchical textures. Nonlinear frameworks can be conformally and reversibly wet upon complex topography in nature, thereby overcoming the wetting problems in previous conventional solid systems.

    2. Domain Wall Architecture in Tetragonal Ferroelectric Thin Films

      Gabriele De Luca, Marta D. Rossell, Jakob Schaab, Nathalie Viart, Manfred Fiebig and Morgan Trassin

      Version of Record online: 9 DEC 2016 | DOI: 10.1002/adma.201605145

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      Non-Ising-like 180° ferroelectric domain wall architecture and domain distribution in tetragonal PbZrxTi1−xO3 thin films are probed using a combination of optical second harmonic generation and scanning transmission electron microscopy. In the remnant state, a specific nonlinear optical signature of tilted 180° domain walls corresponding to a mixed Ising–Néel-type rotation of polarization across the wall is shown.

    3. Ultrafast Digital Printing toward 4D Shape Changing Materials

      Limei Huang, Ruiqi Jiang, Jingjun Wu, Jizhou Song, Hao Bai, Bogeng Li, Qian Zhao and Tao Xie

      Version of Record online: 9 DEC 2016 | DOI: 10.1002/adma.201605390

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      Ultrafast 4D printing (<30 s) of responsive polymers is reported. Visible-light-triggered polymerization of commercial monomers defines digitally stress distribution in a 2D polymer film. Releasing the stress after the printing converts the structure into 3D. An additional dimension can be incorporated by choosing the printing precursors. The process overcomes the speed limiting steps of typical 3D (4D) printing.

    4. Hole Mobility and Electron Injection Properties of D-A Conjugated Copolymers with Fluorinated Phenylene Acceptor Units

      Ming Wang, Michael J. Ford, Alexander T. Lill, Hung Phan, Thuc-Quyen Nguyen and Guillermo C. Bazan

      Version of Record online: 4 JAN 2017 | DOI: 10.1002/adma.201603830

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      A novel wide-gap conjugated polymer PhF2,5 (Eg = 1.9 eV) is designed to contain alternating cyclopentadithiophene and difluorophenylene unit with the goal of favoring unipolar organic field effect transistor characteristics. The higher lowest unoccupied molecular orbital energy of PhF2,5 increases the barrier to electron injection, leading to unipolar transport and higher on/off ratios, without sacrificing desirable high hole mobilities.

    5. Quantitative Predictions of Shape-Memory Effects in Polymers

      Chris C. Hornat, Ying Yang and Marek W. Urban

      Version of Record online: 14 DEC 2016 | DOI: 10.1002/adma.201603334

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      Unique shape-memory transitions manifested by directional extension and subsequent retraction in polymers are attributed to stored conformational entropy. This behavior is quantified in terms of stored (ΔS S) entropic energy density, the maximum strain (εmax), and stress (σSF at εmax). This concept allows quantitative assessments of the shape-memory effect (SME) and can be utilized in any material that exhibits a glass-transition temperature (T g) and a rubbery plateau.

    6. Enhancement of the Performance of Perovskite Solar Cells, LEDs, and Optical Amplifiers by Anti-Solvent Additive Deposition

      Thi Tuyen Ngo, Isaac Suarez, Gabriella Antonicelli, Diego Cortizo-Lacalle, Juan P. Martinez-Pastor, Aurelio Mateo-Alonso and Ivan Mora-Sero

      Version of Record online: 15 DEC 2016 | DOI: 10.1002/adma.201604056

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      The efficiency of perovskite optoelectronic devices is increased by a novel method; its suitability for perovskite solar cells, light-emitting diodes, and optical amplifiers is demonstrated. The method is based on the introduction of organic additives during the anti-solvent step in the perovskite thin-film deposition process. Additives passivate grain boundaries reducing non-radiative recombination. The method can be easily extended to other additives.

    7. In Situ Polymer Graphenization Ingrained with Nanoporosity in a Nitrogenous Electrocatalyst Boosting the Performance of Polymer-Electrolyte-Membrane Fuel Cells

      Xiaogang Fu, Pouyan Zamani, Ja-Yeon Choi, Fathy M. Hassan, Gaopeng Jiang, Drew C. Higgins, Yining Zhang, Md Ariful Hoque and Zhongwei Chen

      Version of Record online: 16 DEC 2016 | DOI: 10.1002/adma.201604456

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      Rich, porous graphene frameworks decorated with uniformly dispersed active sites are prepared by using polyaniline as a graphene precursor and introducing phenanthroline as a pore-forming agent. The unprecedented fuel-cell performance of this electrocatalyst is linked to the graphene frameworks with vast distribution of pore sizes, which maximizes the active-sites accessibility, facilitates mass-transport properties, and improves the carbon corrosion resistance.

    8. Scalable Self-Propagating High-Temperature Synthesis of Graphene for Supercapacitors with Superior Power Density and Cyclic Stability

      Chen Li, Xiong Zhang, Kai Wang, Xianzhong Sun, Guanghua Liu, Jiangtao Li, Huanfang Tian, Jianqi Li and Yanwei Ma

      Version of Record online: 12 DEC 2016 | DOI: 10.1002/adma.201604690

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      An ultrafast self-propagating high-temperature synthesis technique offers scalable routes for the fabrication of mesoporous graphene directly from CO2. Due to the excellent electrical conductivity and high ion-accessible surface area, supercapacitor electrodes based on the obtained graphene exhibit superior energy and power performance. The capacitance retention is higher than 90% after one million charge/discharge cycles.

    9. Achieving Uniform Monolayer Transition Metal Dichalcogenides Film on Silicon Wafer via Silanization Treatment: A Typical Study on WS2

      Ying Chen, Lin Gan, Huiqiao Li, Ying Ma and Tianyou Zhai

      Version of Record online: 14 DEC 2016 | DOI: 10.1002/adma.201603550

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      A silanization reaction is employed to improve the dispersion of precursors on a silicon wafer for a large-size uniform transition metal dichalcogenide (TMD) film synthesis and to achieve a highly crystalline monolayer WS2 film up to 1 cm2. The novel strategy is also verified for the synthesis of WSe2 and MoS2 uniform films, suggesting universality for TMD film fabrication.

    10. Superior Bifunctional Liquid Fuel Oxidation and Oxygen Reduction Electrocatalysis Enabled by PtNiPd Core–Shell Nanowires

      Nan Zhang, Yonggang Feng, Xing Zhu, Shaojun Guo, Jun Guo and Xiaoqing Huang

      Version of Record online: 14 DEC 2016 | DOI: 10.1002/adma.201603774

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      An ultrathin PtNi NWs mediated strategy to form PtNiPd core–shell NWs is constructed. The combination of 1D structure, high-index bounded surface, and unique core–shell structure with high activity of the PtNi shell results in superior performance toward both the liquid fuel oxidation reactions and oxygen reduction reaction.

    11. Field Effect Enhanced Hydrogen Evolution Reaction of MoS2 Nanosheets

      Junhui Wang, Mengyu Yan, Kangning Zhao, Xiaobin Liao, Peiyao Wang, Xuelei Pan, Wei Yang and Liqiang Mai

      Version of Record online: 14 DEC 2016 | DOI: 10.1002/adma.201604464

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      Hydrogen evolution reaction performance of MoS2 can be enhanced through electric-field-facilitated electron transport. The best catalytic performance of a MoS2 nanosheet can achieve an overpotential of 38 mV (100 mA cm−2) at gate voltage of 5 V, the strategy of utilizing the electric field can be used in other semiconductor materials to improve their electrochemical catalysis for future relevant research.

    12. Ultraclean and Direct Transfer of a Wafer-Scale MoS2 Thin Film onto a Plastic Substrate

      Hoang Danh Phan, Youngchan Kim, Jinhwan Lee, Renlong Liu, Yongsuk Choi, Jeong Ho Cho and Changgu Lee

      Version of Record online: 14 DEC 2016 | DOI: 10.1002/adma.201603928

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      An ultraclean method to directly transfer a large-area MoS2 film from the original growth substrate to a flexible substrate by using epoxy glue is developed. The transferred film is observed to be free of wrinkles and cracks and to be as smooth as the film synthesized on the original substrate.

    13. Metal-Organic Framework as a Protective Coating for Biodiagnostic Chips

      Congzhou Wang, Sirimuvva Tadepalli, Jingyi Luan, Keng-Ku Liu, Jeremiah J. Morrissey, Evan D. Kharasch, Rajesh R. Naik and Srikanth Singamaneni

      Version of Record online: 7 DEC 2016 | DOI: 10.1002/adma.201604433

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      Zeolitic imidazolate framework-8 (ZIF-8) grown around antibodies anchored to plasmonic nanostructures serves as a protective layer to preserve the biorecognition ability of antibodies stored at room and elevated temperatures for several days. The biofunctionality of the ZIF-8-protected biochip can be restored by a simple water-rinsing step, making it highly convenient for use in point-of-care and resource-limited settings.

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