当前位置：
X-MOL 学术
›
J. Polym. Sci.
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Covalently linked nanocomposites of polypyrrole with graphene: Strategic design toward optimized properties
Journal of Polymer Science ( IF 3.9 ) Pub Date : 2018-01-14 , DOI: 10.1002/pola.28944 Naiane Naidek 1 , Aldo J. G. Zarbin 1 , Elisa S. Orth 1
Journal of Polymer Science ( IF 3.9 ) Pub Date : 2018-01-14 , DOI: 10.1002/pola.28944 Naiane Naidek 1 , Aldo J. G. Zarbin 1 , Elisa S. Orth 1
Affiliation
|
Graphene‐based nanocomposites with conducting polymers have attracted increasing interest due to the enhanced synergistic properties, which can potentiate and broaden applications. In this context, covalent functionalization stands out as a strategic designing tool, which optimizes the interaction between the nanocomposites components. Herein, covalently linked polymeric nanocomposites were obtained between graphene derivatives and polypyrrole (Ppy) under mild routes (i.e., aqueous, room temperature). First, pyrrole was covalently functionalized on graphene oxide (GO) through stable amide bonds and further polymerization with FeCl3 led to the polymeric nanocomposites. Finally, to improve conductivity, GO was reduced using NaBH4. Similarly, analogous non‐covalent nanocomposites were obtained for comparison purposes. All samples were thoroughly characterized by thermogravimetric analysis, scanning electron microscopy, and infrared and Raman spectroscopy, confirming the targeted functionalization, polymerization, and reduction processes. Moreover, the covalent link effectively enhances the interaction of the nanocomposite's components as evidenced by its improved electrochemical stability (300 cycles), compared to the non‐covalent composites which loses conductivity in the initial stages. Indeed, Ppy is known for its low stability, limiting its applications. Overall, the results herein evidence that covalently linked nanocomposites can be successfully obtained with optimized electrochemical response, promising for applications as supercapacitors and artificial muscles. © 2018 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2018, 56, 579–588
中文翻译：
聚吡咯与石墨烯共价连接的纳米复合材料：优化性能的战略设计
基于石墨烯的纳米复合材料与导电聚合物由于其增强的协同性能而引起了越来越多的关注，这种协同性能可以增强和扩大应用范围。在这种情况下，共价官能化作为一种战略设计工具而突出，它可以优化纳米复合材料组分之间的相互作用。在本文中，在温和的路线（即水性，室温）下，在石墨烯衍生物和聚吡咯（Ppy）之间获得了共价连接的聚合物纳米复合材料。首先，吡咯通过稳定的酰胺键在氧化石墨烯（GO）上共价官能化，并与FeCl 3进一步聚合，形成了聚合物纳米复合材料。最后，为了提高电导率，使用NaBH 4还原了GO。同样，出于比较目的，获得了类似的非共价纳米复合材料。通过热重分析，扫描电子显微镜以及红外和拉曼光谱对所有样品进行了全面表征，从而确定了目标功能化，聚合和还原过程。此外，与非复合共价复合材料在初始阶段会失去导电性相比，共价连接有效地增强了纳米复合材料组分之间的相互作用，这可以通过改善的电化学稳定性（300个循环）来证明。实际上，Ppy因其低稳定性而受到限制，限制了其应用。总体而言，本文的结果证明可以通过优化的电化学反应成功获得共价连接的纳米复合材料，有望用作超级电容器和人造肌肉。©2018 Wiley Periodicals，Inc.J.Polym。科学，A部分：Polym。化学2018，56，579-588
更新日期：2018-01-14
中文翻译：
聚吡咯与石墨烯共价连接的纳米复合材料：优化性能的战略设计
基于石墨烯的纳米复合材料与导电聚合物由于其增强的协同性能而引起了越来越多的关注，这种协同性能可以增强和扩大应用范围。在这种情况下，共价官能化作为一种战略设计工具而突出，它可以优化纳米复合材料组分之间的相互作用。在本文中，在温和的路线（即水性，室温）下，在石墨烯衍生物和聚吡咯（Ppy）之间获得了共价连接的聚合物纳米复合材料。首先，吡咯通过稳定的酰胺键在氧化石墨烯（GO）上共价官能化，并与FeCl 3进一步聚合，形成了聚合物纳米复合材料。最后，为了提高电导率，使用NaBH 4还原了GO。同样，出于比较目的，获得了类似的非共价纳米复合材料。通过热重分析，扫描电子显微镜以及红外和拉曼光谱对所有样品进行了全面表征，从而确定了目标功能化，聚合和还原过程。此外，与非复合共价复合材料在初始阶段会失去导电性相比，共价连接有效地增强了纳米复合材料组分之间的相互作用，这可以通过改善的电化学稳定性（300个循环）来证明。实际上，Ppy因其低稳定性而受到限制，限制了其应用。总体而言，本文的结果证明可以通过优化的电化学反应成功获得共价连接的纳米复合材料，有望用作超级电容器和人造肌肉。©2018 Wiley Periodicals，Inc.J.Polym。科学，A部分：Polym。化学2018，56，579-588
京公网安备 11010802027423号