Advanced Functional Materials

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  1. Pt Nanoparticles Sensitized Ordered Mesoporous WO3 Semiconductor: Gas Sensing Performance and Mechanism Study

    Junhao Ma, Yuan Ren, Xinran Zhou, Liangliang Liu, Yongheng Zhu, Xiaowei Cheng, Pengcheng Xu, Xinxin Li, Yonghui Deng and Dongyuan Zhao

    Version of Record online: 11 DEC 2017 | DOI: 10.1002/adfm.201705268

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    Ordered mesoporous crystalline WO3/Pt nanomaterials are synthesized through a facile straightforward coassembly strategy. Owning to combined merits of the high porosity of mesoporous WO3 and the chemical and electronic sensitization effect of Pt NPs dispersed in mesopores, the nanocomposites exhibit superior performance in carbon monoxide sensing at low working temperature.

  2. Toward Stretchable Self-Powered Sensors Based on the Thermoelectric Response of PEDOT:PSS/Polyurethane Blends

    Prospero J. Taroni, Giovanni Santagiuliana, Kening Wan, Philip Calado, Manting Qiu, Han Zhang, Nicola M. Pugno, Matteo Palma, Natalie Stingelin-Stutzman, Martin Heeney, Oliver Fenwick, Mark Baxendale and Emiliano Bilotti

    Version of Record online: 11 DEC 2017 | DOI: 10.1002/adfm.201704285

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    Stretchable self-powered sensors are developed via blending elastomeric polyurethane (Lycra) with the best current organic thermoelectric material, poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) (PEDOT:PSS). In doing so, the main technological constrains of PEDOT:PSS, namely brittleness, processability, and costs, have, at the same time, been overcome. An unprecedented strain at break (≈700%) is reached, while maintaining high electrical conductivity (≈79 S cm−1) and Seebeck coefficient (≈16 µV K−1).

  3. Reversible Thermochromic Polymeric Thin Films Made of Ultrathin 2D Crystals of Coordination Polymers Based on Copper(I)-Thiophenolates

    Javier Troyano, Oscar Castillo, José I. Martínez, Vanesa Fernández-Moreira, Yolanda Ballesteros, Daniel Maspoch, Félix Zamora and Salome Delgado

    Version of Record online: 11 DEC 2017 | DOI: 10.1002/adfm.201704040

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    Fabrication of reversible thermochromic composite thin films has been achieved by integration of crystalline 2D crystals of coordination polymers, which exhibit micrometer lateral dimensions and sub-micrometer/nanometer thicknesses allowing an efficient dispersibility in polyvinylidene difluoride. These thermal stimuli-responsive composite thin films are flexible, freestanding, free of macroscopic defects, and robust under mechanical bending stress.

  4. Electrically Controlled Neurochemical Release from Dual-Layer Conducting Polymer Films for Precise Modulation of Neural Network Activity in Rat Barrel Cortex

    Zhanhong Jeff Du, Guo-Qiang Bi and Xinyan Tracy Cui

    Version of Record online: 11 DEC 2017 | DOI: 10.1002/adfm.201703988

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    An electrically controlled neurochemical release coating is developed based on a dual-layered conducting polymer and a carbon nanotube composite film. The coating can be applied on neural electrode arrays, and (2-amino-3-(5-methyl-3-oxo-1,2-oxazol-4-yl)propanoic acid) receptor antagonist 6,7-dinitroquinoxaline-2,3-dione can be electrically triggered to release and transiently suppress local sensory-evoked neural activities in rat somatosensory cortex with high spatial and temporal resolution.

  5. Bipolar Conducting Polymer Crawlers Based on Triple Symmetry Breaking

    Bhavana Gupta, Bertrand Goudeau, Patrick Garrigue and Alexander Kuhn

    Version of Record online: 11 DEC 2017 | DOI: 10.1002/adfm.201705825

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    Bipolar electrochemistry is used to induce directed crawling of conducting polymer strips without requiring a physical contact to a power supply. The concept is based on an intrinsic triple symmetry breaking due to differential changes in morphology. This type of wireless locomotion of conducting polymers opens interesting perspectives in the field of (micro)robotics.