Advanced Functional Materials

Cover image for Vol. 27 Issue 12

Early View (Online Version of Record published before inclusion in an issue)

  1. Full Papers

    1. Nanoscale Defect Engineering and the Resulting Effects on Domain Wall Dynamics in Ferroelectric Thin Films

      Leo J. McGilly, Cosmin S. Sandu, Ludwig Feigl, Dragan Damjanovic and Nava Setter

      Version of Record online: 10 MAR 2017 | DOI: 10.1002/adfm.201605196

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      Low-dose Ga+ ion beams are used to effectively control the density and position on the nanoscale of defect sites in thin films of Pb(Zr,Ti)O3 via focused ion beam microscopy. This allows for clear observation of the role of defects in nucleation, polarization switching, and domain wall interaction through investigation with piezoresponse force microscopy and transmission electron microscopy.

    2. The Effect of H- and J-Aggregation on the Photophysical and Photovoltaic Properties of Small Thiophene–Pyridine–DPP Molecules for Bulk-Heterojunction Solar Cells

      Miriam Más-Montoya and René A. J. Janssen

      Version of Record online: 10 MAR 2017 | DOI: 10.1002/adfm.201605779

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      The aggregation behavior of electronically identical thiophene–pyridine–diketopyrrolopyrrole molecules is modulated by introducing and modifying the position of two hexyl side chains on the peripheral thiophene rings. Improved photovoltaic performance is achieved for those molecules assembling into J-type aggregates in contrast to those forming H-aggregates as a result of a faster charge generation and a reduced bimolecular recombination.

    3. Fabricating Aptamer-Conjugated PEGylated-MoS2/Cu1.8S Theranostic Nanoplatform for Multiplexed Imaging Diagnosis and Chemo-Photothermal Therapy of Cancer

      Xiangdan Meng, Zhiqiang Liu, Yu Cao, Wenhao Dai, Kai Zhang, Haifeng Dong, Xiaoyan Feng and Xueji Zhang

      Version of Record online: 10 MAR 2017 | DOI: 10.1002/adfm.201605592

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      An aptamer-conjugated PEGylated-MoS2/Cu1.8S (ATPMC) theranostic nanoplatform is fabricated. It integrates photoluminescence imaging, photoacoustic imaging, and photothermal imaging for in vitro and in vivo tumor cells imaging diagnosis. The ATPMC loaded with doxorubicin presents advanced photothermal therapy and targeted programmed chemotherapy, which possesses excellent therapeutic efficiency of cancer cells treatment.

    4. Intracellularly Disintegratable Polysulfoniums for Efficient Gene Delivery

      Dingcheng Zhu, Huijie Yan, Xin Liu, Jiajia Xiang, Zhuxian Zhou, Jianbin Tang, Xiangrui Liu and Youqing Shen

      Version of Record online: 10 MAR 2017 | DOI: 10.1002/adfm.201606826

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      We report a new class of reactive oxygen species (ROS)-responsive main-chain-disintegrable polysulfoniums, which respond to the elevated intracellular ROS and degrade into neutral thioether fragments. They can not only quickly release the carried DNA but also avoid interference with the gene transcription process, leading to efficient gene expression and low toxicity.

    5. In Vivo Examination of an Injectable Hydrogel System Crosslinked by Peptide–Oligosaccharide Interaction in Immunocompetent Nude Mice

      Christoph Tondera, Robert Wieduwild, Elisabeth Röder, Carsten Werner, Yixin Zhang and Jens Pietzsch

      Version of Record online: 9 MAR 2017 | DOI: 10.1002/adfm.201605189

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      A hydrogel system crosslinked by peptide–oligosaccharide noncovalent interaction exhibits fast self-healing and injectability. Injected hydrogels in immunocompetent mice and release of encapsulated compound are monitored up to 9 months by magnetic resonance imaging and optical imaging. This surprisingly stable hydrogel does not cause adverse inflammatory response, while its degradation is associated with invasion of macrophages and vascular formation.

    6. Concurrent Synthesis of High-Performance Monolayer Transition Metal Disulfides

      Linfeng Sun, Wei Sun Leong, Shize Yang, Matthew F. Chisholm, Shi-Jun Liang, Lay Kee Ang, Yongjian Tang, Yunwei Mao, Jing Kong and Hui Ying Yang

      Version of Record online: 9 MAR 2017 | DOI: 10.1002/adfm.201605896

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      The batch production of monolayer MoS2 and its derivatives grown by chemical vapor deposition techniques has been demonstrated. The concurrent synthesis of different 2D materials is also carried out with a uniform crystal quality and high mobility at 64 cm2 V−1 s−1 (room temperature).

    7. Inorganic Rubidium Cation as an Enhancer for Photovoltaic Performance and Moisture Stability of HC(NH2)2PbI3 Perovskite Solar Cells

      Yun Hee Park, Inyoung Jeong, Seunghwan Bae, Hae Jung Son, Phillip Lee, Jinwoo Lee, Chul-Ho Lee and Min Jae Ko

      Version of Record online: 9 MAR 2017 | DOI: 10.1002/adfm.201605988

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      Partial substitution of inorganic rubidium cation (Rb+) for formamidinium lead iodide (FAPbI3) perovskite suppresses nonperovskite phase formation and increases fluorescence lifetime. Introduction of the smaller monovalent cation in FAPbI3 renders the perovskite more tolerant to high humidity. These lead to enhanced photovoltaic performances and long-term stability of perovskite solar cells based on Rb-mixed FAPbI3.

    8. Functionalized Graphene as Extracellular Matrix Mimics: Toward Well-Defined 2D Nanomaterials for Multivalent Virus Interactions

      Mohammad Fardin Gholami, Daniel Lauster, Kai Ludwig, Julian Storm, Benjamin Ziem, Nikolai Severin, Christoph Böttcher, Jürgen P. Rabe, Andreas Herrmann, Mohsen Adeli and Rainer Haag

      Version of Record online: 8 MAR 2017 | DOI: 10.1002/adfm.201606477

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      This study demonstrates polysulfated graphene sheets mimicking the extracellular matrix of cells and their interactions with vesicular stomatitis virus (VSV). A New and facile method of controlling the density of functionalized graphene sheets is used and the multivalent interaction with the VSV virus has been successfully tuned.

    9. Next-Generation Activated Carbon Supercapacitors: A Simple Step in Electrode Processing Leads to Remarkable Gains in Energy Density

      Jee Y. Hwang, Mengping Li, Maher F. El-Kady and Richard B. Kaner

      Version of Record online: 7 MAR 2017 | DOI: 10.1002/adfm.201605745

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      Laser treatment of activated carbon electrodes results in micro-channels that connect internal pores of activated carbon with the surrounding electrolyte. These micro-channels serve as electrolyte reservoirs shortening the ion diffusion distance and enabling better interaction between electrode surfaces and electrolyte ions. The capacitance can be further increased through fast and reversible redox reactions using a redox active electrolyte.

    10. Amorphous Cobalt–Iron Hydroxide Nanosheet Electrocatalyst for Efficient Electrochemical and Photo-Electrochemical Oxygen Evolution

      Wei Liu, Hu Liu, Lianna Dang, Hongxiu Zhang, Xiaolin Wu, Bin Yang, Zhongjian Li, Xingwang Zhang, Lecheng Lei and Song Jin

      Version of Record online: 7 MAR 2017 | DOI: 10.1002/adfm.201603904

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      Amorphous cobalt–iron hydroxide (CoFe[BOND]H) nanosheets and BiVO4 are effectively integrated, constructing a catalyst/BiVO4 structure for achieving efficient photo-electrochemical (PEC) water oxidation. Benefiting from the properties of CoFe[BOND]H and the rational design of electrocatalyst/semiconductor architecture, CoFe[BOND]H/BiVO4 photoanodes exhibit an enhanced photocurrent density and a low onset potential for PEC water oxidation.

    11. High-Performance Colorful Semitransparent Polymer Solar Cells with Ultrathin Hybrid-Metal Electrodes and Fine-Tuned Dielectric Mirrors

      Guiying Xu, Liang Shen, Chaohua Cui, Shanpeng Wen, Rongming Xue, Weijie Chen, Haiyang Chen, Jingwen Zhang, Hongkun Li, Yaowen Li and Yongfang Li

      Version of Record online: 7 MAR 2017 | DOI: 10.1002/adfm.201605908

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      This study demonstrates that the performance, reproducibility, and colors of inverted semitransparent polymer solar cells (PSCs) can be significantly improved or tuned by combining hybrid Au/Ag, fine-tuned dielectric mirrors, and active layers with various bandgaps. The PTB7-Th:PC71BM-based inverted semitransparent PSCs exhibit a maximum power conversion efficiency of 7.0% on rigid substrate and 6.4% on flexible substrate.

    12. A Nanoselenium Sponge for Instantaneous Mercury Removal to Undetectable Levels

      Snober Ahmed, John Brockgreitens, Ke Xu and Abdennour Abbas

      Version of Record online: 6 MAR 2017 | DOI: 10.1002/adfm.201606572

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      A new polyurethane-selenium nanocomposite sponge is capable of removing aqueous mercury to undetectable levels within a few seconds. The sponge is not cytotoxic, does not retain water nutrients, reduces the concentration of other heavy metals, and exhibits antimicrobial properties that prevent biofouling. The used sponge meets the regulatory requirements for nonhazardous waste disposal.

    13. A Waterborne Coating System for Preparing Robust, Self-healing, Superamphiphobic Surfaces

      Hua Zhou, Hongxia Wang, Haitao Niu, Yan Zhao, Zhiguang Xu and Tong Lin

      Version of Record online: 6 MAR 2017 | DOI: 10.1002/adfm.201604261

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      A waterborne coating system consisting of lyophobic nanoparticles, fluorinated alkyl silane, and fluorocarbon surfactant is developed to make various substrates having a superamphiphobic surface with low contact angle hysteresis. The coating is durable against physical abrasion, repeated washing, boiling in water, and strong acid/base attacks. It also has a self-healing ability against both physical and chemical damages.

    14. 3D Tunable, Multiscale, and Multistable Vibrational Micro-Platforms Assembled by Compressive Buckling

      Xin Ning, Heling Wang, Xinge Yu, Julio A. N. T. Soares, Zheng Yan, Kewang Nan, Gabriel Velarde, Yeguang Xue, Rujie Sun, Qiyi Dong, Haiwen Luan, Chan Mi Lee, Aditya Chempakasseril, Mengdi Han, Yiqi Wang, Luming Li, Yonggang Huang, Yihui Zhang and John A. Rogers

      Version of Record online: 3 MAR 2017 | DOI: 10.1002/adfm.201605914

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      The dynamical behavior of 3D structures assembled by compressive buckling from advanced materials is presented. The results include a broad set of 3D geometries with unique mechanical features, such as tunable resonant frequencies and multistable states. The results provide important design options for micro-electromechanical systems, resonators and kinetic energy harvesters.

    15. Terahertz Phonon Mode Engineering of Highly Efficient Organic Terahertz Generators

      Seung-Heon Lee, Bong Joo Kang, Ba-Wool Yoo, Seung-Chul Lee, Seung-Jun Lee, Mojca Jazbinsek, Hoseop Yun, Fabian Rotermund and O-Pil Kwon

      Version of Record online: 3 MAR 2017 | DOI: 10.1002/adfm.201605583

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      New organic electrooptic quinolinium salt crystals exhibit high optical-to-THz conversion efficiency due to large optical nonlinearity and lower THz absorption, achieved by suppressing the THz vibrational modes by introduction of strongly electronegative groups acting as strong hydrogen-bond acceptor sites into molecular anions.

    16. Acoustic Separation of Nanoparticles in Continuous Flow

      Mengxi Wu, Zhangming Mao, Kejie Chen, Hunter Bachman, Yuchao Chen, Joseph Rufo, Liqiang Ren, Peng Li, Lin Wang and Tony Jun Huang

      Version of Record online: 3 MAR 2017 | DOI: 10.1002/adfm.201606039

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      The standing acoustic wave field separates nanoparticles based on size differences. Larger particles are deflected further and filter out from the original route. This method enables size-based, label-free, and noncontact separation of varied types of nanoparticles.

  2. Feature Articles

    1. Metal-Organic Framework Nanoparticles in Photodynamic Therapy: Current Status and Perspectives

      Marjorie Lismont, Laurent Dreesen and Stefan Wuttke

      Version of Record online: 3 MAR 2017 | DOI: 10.1002/adfm.201606314

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      A new generation of photosensitizers, which includes metal-organic framework nanoparticles built from the photosensitizer itself as organic building unit, is described. The precise spatial control over the photosensitizer assembly into well-defined metal-organic framework scaffolds resolve the current solubility and aggregation issues and should therefore potentiate the outcome of nanoparticles-based cancer photodynamic therapy and allow for opening new perspectives in the field.

  3. Full Papers

    1. Low-Temperature-Processed Printed Metal Oxide Transistors Based on Pure Aqueous Inks

      William J. Scheideler, Rajan Kumar, Andre R. Zeumault and Vivek Subramanian

      Version of Record online: 3 MAR 2017 | DOI: 10.1002/adfm.201606062

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      High-mobility inkjet-printed transistors with transparent electrodes are fabricated at below 250 °C exclusively via aqueous ink chemistries. Intrinsic aqueous fluid properties lead to enhanced printing fidelity, high electrical performance, and better ambient stability relative to organic inks. Degenerately doped transparent conductors (CdO:Al) are developed as a low resistance inkjet-printed contact to an aqueous-printed InO x semiconductor.

    2. Redox Sensitive Hyaluronic Acid-Decorated Graphene Oxide for Photothermally Controlled Tumor-Cytoplasm-Selective Rapid Drug Delivery

      Tingjie Yin, Jiyong Liu, Zekai Zhao, Yuanyuan Zhao, Lihui Dong, Meng Yang, Jianping Zhou and Meirong Huo

      Version of Record online: 3 MAR 2017 | DOI: 10.1002/adfm.201604620

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      A redox-sensitive, hyaluronic acid-decorated graphene oxide nanosheet is constructed for tumor cytoplasm-specific rapid delivery using near-infrared irradiation controlled endo/lysosome disruption and redox-triggered cytoplasmic drug release. This programmed delivery system is demonstrated to overcome multiple biological barriers in a spatiotemporally controlled manner for a specific and enhanced cancer treatment.

    3. Determination of Crystal Axes in Semimetallic T′-MoTe2 by Polarized Raman Spectroscopy

      Junyong Wang, Xin Luo, Shisheng Li, Ivan Verzhbitskiy, Weijie Zhao, Shunfeng Wang, Su Ying Quek and Goki Eda

      Version of Record online: 2 MAR 2017 | DOI: 10.1002/adfm.201604799

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      In-plane anisotropy of thin-layer semimetallic T′-MoTe2 is investigated by angle-resolved Raman spectroscopy. Density functional theory calculations and group theory analysis reveal four types of distinct angular dependence for Ag and Bg modes. In conjunction with electron diffraction analysis, a simple method for determining the crystal orientation is developed.