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大牛Ullrich Scherf最新超电力作(Chem Mater,2015年10月24日) 已有1人参与
题目:Nanofibrous and Graphene-Templated Conjugated Microporous Polymer Materials for Flexible Chemosensors and Supercapacitors
作者:Kai Yuan†, Peiyao Guo-Wang‡, Ting Hu‡, Lei Shi§, Rong Zeng‡, Michael Forster†, Thomas Pichler§, Yiwang Chen*‡, and Ullrich Scherf*†
† Macromolecular Chemistry Group (buwmakro) and Institute for Polymer Technology, Bergische Universität Wuppertal, Gauss-Strasse 20,
D-42119 Wuppertal, Germany
‡ College of Chemistry/Institute of Polymers, Nanchang University, 999 Xuefu Avenue, Nanchang 330031, China
§ Electronic Properties of Materials, Faculty of Physics, University of Vienna, Strudlhofgasse 4, A-1090 Vienna, Austria
摘要:Conjugated microporous polymers (CMPs) are usually obtained as amorphous or semicrystalline powders. Their insolubility and nonprocessability are considered as key bottlenecks that impede CMP applications. In this study, light-emitting, nanofibrous films were fabricated by electrospinning CMP/poly(lactic acid) (PLA) mixtures. The resulting nanofibrous films show a high flexibility combined with high porosity and surface-area-to-volume ratios. The CMP-based nanofibrous films have been used as sensitive sensors in the detection of nitroaromatic and benzoquinone vapors as well as oxidizing metal ions. Moreover, 4-iodophenyl-substituted graphene sheets were used as templates for growing CMP/graphene sandwiches. The graphene-based CMP (G-CMP) sandwiches are characterized by high surface areas and aspect ratios. Furthermore, hierarchically porous two-dimensional carbon nanosheets were obtained by pyrolysis of these carbon-rich G-CMP hybrids. The resulting carbon nanomaterials show excellent supercapacitor behavior with a 48% increased capacitance if compared to porous carbons without the graphene template.
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2015-10-23 10:10:31, 675.7 K
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