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首页> 外文期刊>Journal of Materials Chemistry, C. materials for optical and electronic devices >Homogenous thin layer coated graphene via one pot reaction with multidentate thiolated PMMAs
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Homogenous thin layer coated graphene via one pot reaction with multidentate thiolated PMMAs

机译：通过与多齿硫醇化PMMA一锅反应的均质薄层涂覆石墨烯

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摘要

A novel strategy for the covalent coverage of the graphene surface with brush-like PMMA-SH or multidentate P(MMA-co-SEMA) copolymers by the thiol-ene click reaction is reported. The new graphene(apolymer materials were characterized by FTIR and Raman spectroscopy, thermogravimetric analysis, and AFM, TEM and SEM. AFM images and 2D Raman mapping of the D/G ratio of CVD-graphene covered with brush and multidentate polymers clearly illustrated a more homogeneous modification in the case of the latter. The multidentate-copolymer forms a thin layer covering the graphene surface, contrary to the case for typical polymer brushes. It also displays good conductivity values on the order of the initial unmodified graphene material suggesting that the covalent modification with the polymer is not detrimental to the sp~2 network. A conductivity of ～2 × 10~(-3) S cm~(-1) was achieved in a graphene-based PMMA nanocomposite using graphene@P(MMA-co-SEMA) as a filler, highlighting the importance of engineering the graphene-polymer interface through multidentate copolymer functionalization of graphene.
机译：报道了通过硫醇-烯点击反应用刷状PMMA-SH或多齿P（MMA-co-SEMA）共聚物共价覆盖石墨烯表面的新策略。通过FTIR和拉曼光谱，热重分析以及AFM，TEM和SEM对新的石墨烯（聚合物材料）进行了表征。用刷子和多齿聚合物覆盖的CVD-石墨烯的D / G比的AFM图像和二维拉曼作图清楚地说明了更多。与典型的聚合物刷的情况相反，多齿共聚物形成覆盖石墨烯表面的薄层，并且与初始未改性的石墨烯材料的数量级相比，它还显示出良好的电导率值，表明共价键用该聚合物进行改性对sp〜2网络无害，使用石墨烯@P（MMA-co）在石墨烯基PMMA纳米复合材料中实现了〜2×10〜（-3）S cm〜（-1）的电导率。 -SEMA）作为填料，强调了通过石墨烯的多齿共聚物官能化工程化石墨烯-聚合物界面的重要性。

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