Advanced Functional Materials

Cover image for Vol. 24 Issue 48

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

  1. Full Papers

    1. Metal-Insulator Transition in ALD VO2 Ultrathin Films and Nanoparticles: Morphological Control

      Antony P. Peter, Koen Martens, Geert Rampelberg, Michael Toeller, James M. Ablett, Johan Meersschaut, Daniel Cuypers, Alexis Franquet, Christophe Detavernier, Jean-Pascal Rueff, Marc Schaekers, Sven Van Elshocht, Malgorzata Jurczak, Christoph Adelmann and Iuliana P. Radu

      Article first published online: 15 DEC 2014 | DOI: 10.1002/adfm.201402687

      Thumbnail image of graphical abstract

      It is shown how nanoscale morphology of VO2 films can be controlled to realize smooth ultrathin (<10 nm) crystalline films or nanoparticles with atomic layer deposition, opening doors to practical VO2 metal-insulator transition (MIT) nanoelectronics. The films and particles possess both a structural and an electronic transition. Film resistivity changes by more than two orders of magnitude across the MIT.

    2. Multiple Layer-by-Layer Lipid-Polymer Hybrid Nanoparticles for Improved FOLFIRINOX Chemotherapy in Pancreatic Tumor Models

      Feng Li, Xiao Zhao, Hai Wang, Ruifang Zhao, Tianjiao Ji, He Ren, Gregory J. Anderson, Guangjun Nie and Jihui Hao

      Article first published online: 15 DEC 2014 | DOI: 10.1002/adfm.201401583

      Thumbnail image of graphical abstract

      Novel multiple layer-by-layer lipid-polymer hybrid nanoparticles with targeting capability are used to encapsulate the three active antitumor constituents of the FOLFIRINOX regimen in the chemotherapy of pancreatic cancer. Relative to nanoparticles consisting of polymer alone, these novel nanocarriers have a long half-life in vivo and a higher stability in serum. These innovative drug-loaded nanoparticles achieved higher antitumor efficacy and showed minimal side effects compared with the FOLFIRINOX regimen alone.

    3. Graphene Foam with Switchable Oil Wettability for Oil and Organic Solvents Recovery

      Haiguang Zhu, Dongyun Chen, Najun Li, Qingfeng Xu, Hua Li, Jinghui He and Jianmei Lu

      Article first published online: 15 DEC 2014 | DOI: 10.1002/adfm.201403864

      Thumbnail image of graphical abstract

      The pH-responsive material based on graphene foam coated poly(2-vinylpyridine) and polyhexadecyl acrylate is successfully prepared for removing oil and organic solvents from water. It can switch its adsorption and desorption of oil and organic solvents in response to the change of pH. In addition, it exhibits high adsorption capacity and excellent reusability.

    4. Monolayer MoS2 Growth on Au Foils and On-Site Domain Boundary Imaging

      Jianping Shi, Yang Yang, Yu Zhang, Donglin Ma, Wei Wei, Qingqing Ji, Yanshuo Zhang, Xiuju Song, Teng Gao, Cong Li, Xinhe Bao, Zhongfan Liu, Qiang Fu and Yanfeng Zhang

      Article first published online: 15 DEC 2014 | DOI: 10.1002/adfm.201403659

      Thumbnail image of graphical abstract

      The monolayer molybdenum disulfide growth process is proposed to be mediated by two competitive effects with hydrogen acting as both a reduction promoter for efficient sulfurization of MoO3 and an etching reagent of resulting molybdenum disulfide flakes. By using low-energy electron microscopy/diffraction, the crystal orientations and domain boundaries of molybdenum disulfide flakes are identified directly on Au foils for the first time.

    5. Orthogonal Molecular Structure for Better Host Material in Blue Phosphorescence and Larger OLED White Lighting Panel

      Lei Ding, Shou-Cheng Dong, Zuo-Quan Jiang, Hua Chen and Liang-Sheng Liao

      Article first published online: 15 DEC 2014 | DOI: 10.1002/adfm.201403402

      Thumbnail image of graphical abstract

      Over 25% external quantum efficiency in blue phosphorescence by spiro-bipolar host diphenyl(10-phenyl-10H-spiro[acridine-9,9′-fluoren]-2′-yl)phosphine oxide is achieved and over 75 lm W-1 large white organic light-emitting diodes lighting panel is fabricated.

    6. Ambient-Stable, Annealing-Free, and Ambipolar Organic Field-Effect Transistors Based on Solution-Processable Poly(2,2′-bis(trifluoromethyl)biphenyl-alt-2,5-divinylthiophene) without Long Alkyl Side Chains

      Chi-Jui Chiang, Jyh-Chien Chen, Hsiang-Yen Tsao, Kuan-Yi Wu and Chien-Lung Wang

      Article first published online: 15 DEC 2014 | DOI: 10.1002/adfm.201403428

      Thumbnail image of graphical abstract

      An ambipolar organic field-effect transistor based on a solution-processable conjugated polymer, CF3-PBTV, is developed. The solution-processability is achieved without long alkyl side chains. The organic field-effect transistor shows well-equivalent ambipolarity with hole mobility of 0.065 cm2 V−1 s−1 and electron mobility of 0.078 cm2 V−1 s−1 in air. This annealing-free OFET also demonstrates very high on/off ratio (≈107) and excellent ambient-stability over 90 days.

    7. Self-Powered Trace Memorization by Conjunction of Contact-Electrification and Ferroelectricity

      Xiangyu Chen, Mitsumasa Iwamoto, Zhemin Shi, Limin Zhang and Zhong Lin Wang

      Article first published online: 15 DEC 2014 | DOI: 10.1002/adfm.201403577

      Thumbnail image of graphical abstract

      The output voltage produced by the contact-electrification during motion can polarize the dipole moments in the ferroelectric thin film. This mechanism can be used to design a novel self-powered memory system for recording the mechanical displacements in both 1D and 2D regions. The study shows that this memory system has good resolution, high sensitivity, and many possible applications.

    8. Shear-Thinning Supramolecular Hydrogels with Secondary Autonomous Covalent Crosslinking to Modulate Viscoelastic Properties In Vivo

      Christopher B. Rodell, John W. MacArthur Jr., Shauna M. Dorsey, Ryan J. Wade, Leo L. Wang, Y. Joseph Woo and Jason A. Burdick

      Article first published online: 12 DEC 2014 | DOI: 10.1002/adfm.201403550

      Thumbnail image of graphical abstract

      Injectable hyaluronic acid hydrogels with high target site retention, tunable properties, and potential for percutaneous delivery are developed through a tandem crosslinking approach. Supramolecular crosslinking provides initial hydrogel formation and shear-thinning delivery, while secondary covalent crosslinking stabilizes the hydrogel in situ. Material properties and treatment of myocardial infarct are examined.

    9. Facile Synthesis of Hematite Quantum-Dot/Functionalized Graphene-Sheet Composites as Advanced Anode Materials for Asymmetric Supercapacitors

      Hui Xia, Caiyun Hong, Bo Li, Bin Zhao, Zixia Lin, Mingbo Zheng, Serguei V. Savilov and Serguei M. Aldoshin

      Article first published online: 12 DEC 2014 | DOI: 10.1002/adfm.201403554

      Thumbnail image of graphical abstract

      Hematite quantum-dot/functionalized graphene-sheet composites are prepared and the composite electrode can reach a maximum specific capacitance of 347 F g−1, which is much larger than the reported values for the Fe2O3-based electrodes in neutral aqueous electrolyte. A high-performance 2 V asymmetrical supercapacitor is fabricated using Fe2O3/FGS as anode and MnO2/FGS as cathode in 1 m Na2SO4 electrolyte.

    10. Fabrication of All-Water-Based Self-Repairing Superhydrophobic Coatings Based on UV-Responsive Microcapsules

      Kunlin Chen, Shuxue Zhou, Shu Yang and Limin Wu

      Article first published online: 12 DEC 2014 | DOI: 10.1002/adfm.201403496

      Thumbnail image of graphical abstract

      An environmentally benign, all-water-based self-repairing superhydrophobic coating based on UV-responsive microcapsules is fabricated, which exhibits excellent self-healing and self-cleaning ability in an outdoor environment, and after mechanical damage and contamination by organics.

    11. A Timely Synthetic Tailoring of Biaxially Extended Thienylenevinylene-Like Polymers for Systematic Investigation on Field-Effect Transistors

      Dohyuk Yoo, Benjamin Nketia-Yawson, Seok-Ju Kang, Hyungju Ahn, Tae Joo Shin, Yong-Young Noh and Changduk Yang

      Article first published online: 8 DEC 2014 | DOI: 10.1002/adfm.201403527

      Thumbnail image of graphical abstract

      A tactically chosen set of DPP-TVT-n polymers involving biaxially extended thienylenevinylene (TVT) and diketopyrrolopyrrole (DPP) units, by tuning the thiophene-to-vinylene ratio in the backbone, is synthesized. This in-depth study uncovers that the degrees of the paracrystalline nature and the (h00) plane distribution, rather than densely packed organization, play a critical role in facilitating charge transport.

    12. Effective Photothermal Killing of Pathogenic Bacteria by Using Spatially Tunable Colloidal Gels with Nano-Localized Heating Sources

      Chun-Wen Hsiao, Hsin-Lung Chen, Zi-Xian Liao, Radhakrishnan Sureshbabu, Hsu-Chan Hsiao, Shu-Jyuan Lin, Yen Chang and Hsing-Wen Sung

      Article first published online: 8 DEC 2014 | DOI: 10.1002/adfm.201403478

      Thumbnail image of graphical abstract

      The injected polymer solution exhibits a rapid nanostructure transformation over a narrow range of pH values and forms a colloidal gel at the site of the abscess, providing tunable spatial stabilization. The formed colloidal gel converts near-infrared (NIR) light energy into heat and causes thermal lysis of the bacteria, reducing thermal damage to the surrounding tissues.

    13. Intratumoral Thermal Reading During Photo-Thermal Therapy by Multifunctional Fluorescent Nanoparticles

      Elisa Carrasco, Blanca del Rosal, Francisco Sanz-Rodríguez, Ángeles Juarranz de la Fuente, Patricia Haro Gonzalez, Ueslen Rocha, Kagola Upendra Kumar, Carlos Jacinto, José García Solé and Daniel Jaque

      Article first published online: 6 DEC 2014 | DOI: 10.1002/adfm.201403653

      Thumbnail image of graphical abstract

      The unique ability of Neodymium doped LaF3 nanoparticles for simultaneous heating and temperature sensing is used here for the development of efficient and damage-free photo-thermal treatment of cancer tumors with real time intratumoral thermal reading.

    14. Enhanced Light-Harvesting by Integrating Synergetic Microcavity and Plasmonic Effects for High-Performance ITO-Free Flexible Polymer Solar Cells

      Kai Yao, Xu-Kai Xin, Chu-Chen Chueh, Kung-Shih Chen, Yun-Xiang Xu and Alex K.-Y. Jen

      Article first published online: 6 DEC 2014 | DOI: 10.1002/adfm.201403297

      Thumbnail image of graphical abstract

      Highly efficient ITO-free, flexible polymer solar cells (PSCs) are successfully demon­strated by integrating the plasmonic effect into microcavity-based devices. By carefully controlling the embedded Ag nanoprisms sizes, the power conversion efficiency (PCE) of the devices can be significantly enhanced to as high as 9.4% on both glass and flexible (PET) substrates.

    15. Relating the Physical Structure and Optoelectronic Function of Crystalline TIPS-Pentacene

      Sahar Sharifzadeh, Cathy Y. Wong, Hao Wu, Benjamin L. Cotts, Leeor Kronik, Naomi S. Ginsberg and Jeffrey B. Neaton

      Article first published online: 6 DEC 2014 | DOI: 10.1002/adfm.201403005

      Thumbnail image of graphical abstract

      A combination of micro-spectroscopy and many-body perturbation theory reveals the inter-grain orientation within polycrystalline TIPS-pentacene films and the relationship of the physical structure to opto-electronic properties.

    16. Epoxy Toughening with Low Graphene Loading

      Yong Tae Park, Yuqiang Qian, Clement Chan, Taewon Suh, Mehrdad Ghasemi Nejhad, Christopher W. Macosko and Andreas Stein

      Article first published online: 6 DEC 2014 | DOI: 10.1002/adfm.201402553

      Thumbnail image of graphical abstract

      Epoxy toughening by graphene is demonstrated at graphene loadings as low as 0.02 wt%. Functionalization of graphene can further improve the toughening effect at such a small loading level. A mechanism based on the formation and coalescence of microcracks generated by graphene is proposed to explain the fracture behavior of epoxy/graphene nanocomposites.

    17. High Performance Three-Dimensional Chemical Sensor Platform Using Reduced Graphene Oxide Formed on High Aspect-Ratio Micro-Pillars

      Le Thai Duy, Duck-Jin Kim, Tran Quang Trung, Vinh Quang Dang, Bo-Yeong Kim, Hock Key Moon and Nae-Eung Lee

      Article first published online: 5 DEC 2014 | DOI: 10.1002/adfm.201401992

      Thumbnail image of graphical abstract

      A possibility of sensing enhancement of chemiresistor gas sensors based on reduced graphene oxide (R-GO) through extension of device channel geometry by using three-dimensional (3D) SU-8 micro-pillar array is discussed. The combination of controllable 3D structure and easily modifiable R-GO reveals a good premise to maximize the advantages of the multi-scale hybridization of R-GO for contemporary and future sensing devices.

    18. A Bio-inspired Potassium and pH Responsive Double-gated Nanochannel

      Meiying Liu, Huacheng Zhang, Kan Li, Liping Heng, Shutao Wang, Ye Tian and Lei Jiang

      Article first published online: 3 DEC 2014 | DOI: 10.1002/adfm.201401655

      Thumbnail image of graphical abstract

      A dual-responsive double-gated nanochannel: A bio-inspired potassium and pH responsive double-gated nanosystem is developed by immobilizing C-quadruplex and G-quadruplex DNA molecules onto the top and bottom tip side of a cigar-shaped nanochannel, respectively. This system, as the first example, may open up a new way to build diverse functional double-gated nanochannel with dual-response to meet the real-world application.

  2. Highlights

    1. Current Understanding of Van der Waals Effects in Realistic Materials

      Alexandre Tkatchenko

      Article first published online: 2 DEC 2014 | DOI: 10.1002/adfm.201403029

      Thumbnail image of graphical abstract

      Van der Waals interactions arise from correlated electronic fluctuations in matter and are therefore present in all materials. Our current understanding of these ubiquitous quantum-mechanical forces is summarized, and their effects in a wide variety of realistic materials are highlighted, ranging from molecular assemblies to solids with and without defects, nanostructures of varying size and dimensionality, as well as interfaces between inorganic and organic materials.

  3. Full Papers

    1. Mechanical Surface Modification of Lithium Metal: Towards Improved Li Metal Anode Performance by Directed Li Plating

      Myung-Hyun Ryou, Yong Min Lee, Yunju Lee, Martin Winter and Peter Bieker

      Article first published online: 2 DEC 2014 | DOI: 10.1002/adfm.201402953

      Thumbnail image of graphical abstract

      The simple, scalable, and cost-efficient surface treatment technique for Li metal is developed. With a simple rolling process, the micro-needles create inverse micro-needles pattern over wide area of Li metal surface, which remarkably enhances the power capabilities and cycle retention abilities to those of the bare Li metal.