Advanced Materials

Cover image for Vol. 29 Issue 39

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

  1. Communications

    1. Structure-Guided Design and Synthesis of a Mitochondria-Targeting Near-Infrared Fluorophore with Multimodal Therapeutic Activities

      Xu Tan, Shenglin Luo, Lei Long, Yu Wang, Dechun Wang, Shengtao Fang, Qin Ouyang, Yongping Su, Tianmin Cheng and Chunmeng Shi

      Version of Record online: 5 OCT 2017 | DOI: 10.1002/adma.201704196

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      A structure-inherent multifunctional small molecule with simultaneous cancer-cell mitochondrial targeting, NIR imaging, and synchronous PDT/PTT/chemotherapeutic effects is developed with simultaneous. Human serum albumin further enhances its tumor-preferential accumulation through the enhanced permeability and retention effect via self-assembly. This work may present a practicable strategy to develop small-molecule-based cancer theranostic agents with improved tumor targeting for simultaneous cancer diagnostics and therapeutics.

    2. A Chiral-Nanoassemblies-Enabled Strategy for Simultaneously Profiling Surface Glycoprotein and MicroRNA in Living Cells

      Wei Ma, Maozhong Sun, Pan Fu, Si Li, Liguang Xu, Hua Kuang and Chuanlai Xu

      Version of Record online: 5 OCT 2017 | DOI: 10.1002/adma.201703410

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      Controllable chiral graphene oxide–gold assemblies are fabricated, which display dual strong optical signals with characteristic plasmonic circular dichroism (CD) at 521 nm and surface-enhanced Raman scattering (SERS) at 1711.29 cm−1. Based on dual signals of plasmonic CD and SERS, for the first time, the quantitative monitoring of EpCAM and miR-21 in living cells is achieved. Significantly, it is found that the CD signals reverse from negative in the original assemblies into positive when reacted with cell-related biological components.

    3. Printable Fabrication of Nanocoral-Structured Electrodes for High-Performance Flexible and Planar Supercapacitor with Artistic Design

      Yuanjing Lin, Yuan Gao and Zhiyong Fan

      Version of Record online: 5 OCT 2017 | DOI: 10.1002/adma.201701736

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      Novel and unique hierarchical nanocoral structures as interdigitated electrodes with high density are constructed on flexible substrates via a scalable and printable technique, and the as-fabricated flexible all-solid-state planar supercapacitors achieve remarkable performance enhancement. Due to utilization of the inkjet-printing technique, working supercapacitors with excellent versatility on an electrode-pattern artistic design are successfully fabricated.

    4. Unraveling the Solution-State Supramolecular Structures of Donor–Acceptor Polymers and their Influence on Solid-State Morphology and Charge-Transport Properties

      Yu-Qing Zheng, Ze-Fan Yao, Ting Lei, Jin-Hu Dou, Chi-Yuan Yang, Lin Zou, Xiangyi Meng, Wei Ma, Jie-Yu Wang and Jian Pei

      Version of Record online: 4 OCT 2017 | DOI: 10.1002/adma.201701072

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      A supramolecular self-assembly strategy is used to control the solution-state structure of a conjugated polymer. It is revealed that the thin-film morphology of the conjugated polymer inherits the features of their solution-state supramolecular structures. Through “solution-state supramolecular structure control”, the electron mobility of the polymer is boosted to 3.2 cm2 V−1 s−1, nearly doubling the original performance.

    5. Surface-Embedded Stretchable Electrodes by Direct Printing and their Uses to Fabricate Ultrathin Vibration Sensors and Circuits for 3D Structures

      Jun Hyuk Song, Young-Tae Kim, Sunghwan Cho, Woo-Jin Song, Sungmin Moon, Chan-Gyung Park, Soojin Park, Jae Min Myoung and Unyong Jeong

      Version of Record online: 4 OCT 2017 | DOI: 10.1002/adma.201702625

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      Stretchable electrodes surface-embedded in rubber substrates are fabricated by a simple printing strategy. The process involves printing of a metal precursor and chemical reduction into metal nanoparticles. These printed electrodes are used as highly sensitive free-standing thin-film vibration sensors and highly stretchable electrical circuits for 3D structures.

    6. Efficient Semitransparent Organic Solar Cells with Tunable Color enabled by an Ultralow-Bandgap Nonfullerene Acceptor

      Yong Cui, Chenyi Yang, Huifeng Yao, Jie Zhu, Yuming Wang, Guoxiao Jia, Feng Gao and Jianhui Hou

      Version of Record online: 4 OCT 2017 | DOI: 10.1002/adma.201703080

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      A new nonfullerene acceptor, IEICO-4Cl, is designed to prepare semitransparent organic solar cells (OSCs), yielding a power conversion efficiency of 8.38% with an average visible transmittance of 25.7%, which is among the top results for semitransparent OSCs.

    7. Electrically Driven Reversible Phase Changes in Layered In2Se3 Crystalline Film

      Min Sup Choi, Byung-ki Cheong, Chang Ho Ra, Suyoun Lee, Jee-Hwan Bae, Sungwoo Lee, Gun-Do Lee, Cheol-Woong Yang, James Hone and Won Jong Yoo

      Version of Record online: 4 OCT 2017 | DOI: 10.1002/adma.201703568

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      Reversible crystalline–crystalline phase-change memories are developed by stacking In2Se3 on the bottom graphene electrode. This shows SET and RESET programmed states via formation and annihilation of periodic van der Waals' gaps. The reversible transition of monolithic In2Se3 layered film demonstrates the potential of melting-free and low-entropy phase-change memories.

    8. AIE Nanoparticles with High Stimulated Emission Depletion Efficiency and Photobleaching Resistance for Long-Term Super-Resolution Bioimaging

      Dongyu Li, Wei Qin, Bin Xu, Jun Qian and Ben Zhong Tang

      Version of Record online: 4 OCT 2017 | DOI: 10.1002/adma.201703643

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      A star aggregation-induced emission luminogen is doped into silica nanoparticles, which serve as fluorescent probes for stimulated emission depletion (STED) nanoscopy imaging with a high lateral spatial resolution of 30 nm. The nanoparticles are highly resistant to photobleaching, even under long-term and high-power STED light irradiation. Consequently, super-resolution bioimaging is performed for more than half an hour, with low fluorescence loss.

    9. Photonic Microhand with Autonomous Action

      Daniele Martella, Sara Nocentini, Dmitry Nuzhdin, Camilla Parmeggiani and Diederik S. Wiersma

      Version of Record online: 4 OCT 2017 | DOI: 10.1002/adma.201704047

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      A microhand made by liquid-crystalline networks, which is able to grab different objects, is described. It can be controlled remotely by optical illumination or it can act autonomously and grab small particles on the basis of their optical properties. The microhand can distinguish between particles of different colors and gray levels.

    10. Solid-State Explosive Reaction for Nanoporous Bulk Thermoelectric Materials

      Kunpeng Zhao, Haozhi Duan, Nunna Raghavendra, Pengfei Qiu, Yi Zeng, Wenqing Zhang, Jihui Yang, Xun Shi and Lidong Chen

      Version of Record online: 29 SEP 2017 | DOI: 10.1002/adma.201701148

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      Nanoporous bulk thermoelectric materials with well-controlled porous structures are fabricated by a unique, ultrafast, yet effective strategy. The lattice thermal conductivity is drastically decreased below the κmin of the fully densified material because of the simultaneously reduction in specific heat, sound speed, and phonon mean free path, leading to much enhanced thermoelectric performance.

  2. Progress Reports

    1. Recent Advances in Alternating Current-Driven Organic Light-Emitting Devices

      Yufeng Pan, Yingdong Xia, Haijuan Zhang, Jian Qiu, Yiting Zheng, Yonghua Chen and Wei Huang

      Version of Record online: 29 SEP 2017 | DOI: 10.1002/adma.201701441

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      Recent advances in alternating current (AC)-driven organic light-emitting devices (OLEDs) are highlighted, regarding device structure, operation, and performance, focusing mainly on different device structures of AC-driven OLEDs. These structures include double-insulation, single-insulation, double-injection, and tandem structures. A great future can be expected for high-performance AC-driven OLEDs in further exploration of new device structures, designing new materials, and understanding the device physics.

  3. Communications

    1. A Nanoporous Cytochrome c Film with Highly Ordered Porous Structure for Sensing of Toxic Vapors

      Geoffrey Lawrence, Palraj Kalimuthu, Mercy Benzigar, Kinnari J. Shelat, Kripal S. Lakhi, Dae-Hwan Park, Qingmin Ji, Katsuhiko Ariga, Paul V. Bernhardt and Ajayan Vinu

      Version of Record online: 29 SEP 2017 | DOI: 10.1002/adma.201702295

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      Highly ordered nanoporous protein films containing cytochrome c molecules are prepared through the soft-templating strategy, displaying superior stability and selective sensing for toxic organic acid vapors. Quartz-crystal microbalance (QCM) characterization for the nanoporous film with a pore size of 200 nm exhibits a highly selective sensing for toxic acidic vapors.

    2. Virus-Mimicking Chimaeric Polymersomes Boost Targeted Cancer siRNA Therapy In Vivo

      Yan Zou, Meng Zheng, Weijing Yang, Fenghua Meng, Kanjiro Miyata, Hyun Jin Kim, Kazunori Kataoka and Zhiyuan Zhong

      Version of Record online: 29 SEP 2017 | DOI: 10.1002/adma.201703285

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      α3β1-Integrin-specific reversibly crosslinked chimaeric polymersomes show highly efficient loading and targeted delivery of Polo-like kinase1 specific small interfering RNA to orthotopic A549 human lung tumors in nude mice, leading to potent tumor suppression, effective inhibition of metastasis, and markedly improved survival rate.

    3. Direct Observation of Halide Migration and its Effect on the Photoluminescence of Methylammonium Lead Bromide Perovskite Single Crystals

      Yanqi Luo, Parisa Khoram, Sarah Brittman, Zhuoying Zhu, Barry Lai, Shyue Ping Ong, Erik C. Garnett and David P. Fenning

      Version of Record online: 29 SEP 2017 | DOI: 10.1002/adma.201703451

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      Bromide-ion migration is directly observed in a methylammonium lead bromide perovskite single crystal under bias using a synchrotron-based X-ray fluorescence nanoprobe. Photoluminescence mapping indicates that bromide-rich regions exhibit enhanced photoluminescence. The close correspondence between the local bromide concentration and photoluminescence in response to bias reveals the importance of non-stoichiometry in determining optoelectronic performance in halide perovskites.

    4. Improved Domain Size and Purity Enables Efficient All-Small-Molecule Ternary Solar Cells

      Hao Zhang, Xiaohui Wang, Liyan Yang, Shaoqing Zhang, Yun Zhang, Chang He, Wei Ma and Jianhui Hou

      Version of Record online: 29 SEP 2017 | DOI: 10.1002/adma.201703777

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      An all-small-molecule ternary solar cell is achieved with a power conversion efficiency of 10.48% by incorporating the phenyl-C71-butyric-acid-methyl ester (PC71BM) into a nonfullerene small-molecule binary system. The addition of PC71BM is found to modulate the film morphology by improving the domain purity and decreasing the domain size. This facilitates charge generation and suppresses charge recombination.

    5. Ultrafast Magnetization Manipulation Using Single Femtosecond Light and Hot-Electron Pulses

      Yong Xu, Marwan Deb, Grégory Malinowski, Michel Hehn, Weisheng Zhao and Stéphane Mangin

      Version of Record online: 29 SEP 2017 | DOI: 10.1002/adma.201703474

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      Deterministic switching of magnetization without any external magnetic field is demonstrated using single femtosecond hot-electron or laser pulses in an engineered GdxFeCo1−x-based structure. It is found that a hot-electron pulse allows a reversed magnetic state within 40 ps in either Gd-rich or FeCo-rich alloys, similar to a femtosecond laser pulse. This study paves the way for ultrafast spintronics.

    6. Cerium and Ytterbium Codoped Halide Perovskite Quantum Dots: A Novel and Efficient Downconverter for Improving the Performance of Silicon Solar Cells

      Donglei Zhou, Dali Liu, Gencai Pan, Xu Chen, Dongyu Li, Wen Xu, Xue Bai and Hongwei Song

      Version of Record online: 29 SEP 2017 | DOI: 10.1002/adma.201704149

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      Cerium and ytterbium codoped halide perovskite quantum dots display an efficient near-infrared emission with inner luminescent quantum yield of 146%. The quantum dots are explored to enhance the performance of silicon solar cells with a relative enhancement of 18.8%.

    7. Fused-Ring Acceptors with Asymmetric Side Chains for High-Performance Thick-Film Organic Solar Cells

      Shiyu Feng, Cai'e Zhang, Yahui Liu, Zhaozhao Bi, Zhe Zhang, Xinjun Xu, Wei Ma and Zhishan Bo

      Version of Record online: 28 SEP 2017 | DOI: 10.1002/adma.201703527

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      A new fused-ring electron acceptor (IDT-OB), bearing asymmetric side chains, is facilely synthesized for high-efficiency thick-film organic solar cells. The asymmetric structure makes it easier to form ideal phase separation when blended with a polymer donor. Power conversion efficiencies of 10.12% and 8.57% are obtained with the active-layer thicknesses of 130 and 320 nm, respectively.

    8. Metal-Ion-Modified Black Phosphorus with Enhanced Stability and Transistor Performance

      Zhinan Guo, Si Chen, Zhongzheng Wang, Zhenyu Yang, Fei Liu, Yanhua Xu, Jiahong Wang, Ya Yi, Han Zhang, Lei Liao, Paul K. Chu and Xue-Feng Yu

      Version of Record online: 28 SEP 2017 | DOI: 10.1002/adma.201703811

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      A simple and effective metal-ion modification strategy based on cation–π interactions is applied to black phosphorus to enhance both its air stability and its transistor performance. Such stable and high-performance black-phosphorus transistors, which are enhanced tremendously by this novel strategy, have large potential in electronic and optoelectronic devices.

    9. Layered-Double-Hydroxide Nanosheets as Efficient Visible-Light-Driven Photocatalysts for Dinitrogen Fixation

      Yufei Zhao, Yunxuan Zhao, Geoffrey I. N. Waterhouse, Lirong Zheng, Xingzong Cao, Fei Teng, Li-Zhu Wu, Chen-Ho Tung, Dermot O'Hare and Tierui Zhang

      Version of Record online: 28 SEP 2017 | DOI: 10.1002/adma.201703828

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      Layered-double-hydroxide (LDH) nanosheets are shown to exhibit outstanding visible-light-driven photocatalytic activity for the reduction of N2 to NH3 under ambient conditions. Irradiation of CuCr-LDH nanosheets in N2-saturated water with 500 nm monochromatic light produces NH3. The excellent activity can be attributed to the severely distorted structure and compressive strain of the LDH nanosheets, promoting NH3 formation.

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