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    Home > Chemicals Industry > New Chemical Materials > Research on the Controllable Preparation and Application of Porous Conductive Polymer Nanostructure Materials

    Research on the Controllable Preparation and Application of Porous Conductive Polymer Nanostructure Materials

    • Last Update: 2021-06-17
    • Source: Internet
    • Author: User
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      Nobel Laureates in Chemistry Hideki Shirakawa, Alan Haig, and Alan McDilmid found that doped polyacetylene has high conductivity (up to 1000 S cm-1), breaking the organic polymer insulation This traditional concept opened up a new era of conductive polymers
    .
    Conductive polymers have both the mechanical flexibility of traditional polymers and the peculiar optoelectronic properties of metals and semiconductors, and they are easy to prepare, have adjustable conductivity, and have good electrochemical activity

    .
    Compared with traditional conductive polymers, conductive polymers with nanoporous structure have open pore structure, higher specific surface area, more active sites and significantly improved electrochemical activity, due to their performance in many fields Excellent and attracting attention

    .

      Based on the research progress in the field of porous conductive polymer nanostructure materials, Advanced Materials recently published online research on the controllable preparation and application of porous conductive polymer nanostructure materials, which was completed by researcher Liu Shaohua from East China Normal University and Professor Yusuke Yamauchi from the University of Queensland in Australia.
    A review, titled "Nanoarchitectured Porous Conducting Polymers: From Controlled Synthesis to Advanced Applications", the article summarizes the research progress in this field in the past ten years, focusing on the synthesis strategy and structure (morphology, pore channel) of porous conductive polymer nanostructure materials.
    Structure) control and potential applications in the fields of energy storage conversion, sensing, and biomedicine, and analyze some of the challenges in current research and future development prospects

    .

      

      【Controllable Synthesis Strategy of Porous Conductive Polymer Nanostructured Materials】

      This paper first introduced and analyzed the advantageous physicochemical properties and unique structural characteristics of nanostructured porous conductive polymers, and combed the current synthesis strategies of nanostructured porous conductive polymers, including template method (hard template, soft template) and no Template method, and the main characteristics of each method
    .
    The template-oriented construction method utilizes the spatial confinement of the template to regulate the physical and chemical reactions during the preparation process to realize the controllable preparation of materials

    .
    The reasonable selection and design of the template is of great significance for the simple and efficient realization of the fine control of the microscopic morphology and pore structure (shape, size and distribution) of the conductive polymer

    .

      

      Figure 1 Preparation of mesoporous polypyrrole/graphene oxide composite (mPPy-GO) guided by hard template (SiO2)

      

      Figure 2 (ab) Diblock copolymer (PS-b-PEO) guides to construct mesoporous polypyrrole; (cd) Triblock copolymer P123 guides to construct mesoporous polypyrrole and mesoporous polyaniline
    .

      The template-free regulation avoids the use of templates, and the introduction of its pore structure comes from structural defects spontaneously generated during the growth and aggregation of nano-scale polymer units
    .
    Therefore, compared with the template method, the template-free method has poorer controllability for preparing porous conductive polymers

    .

      【Application of porous conductive polymer nanostructure materials】

      Conductive polymers have their own unique molecular structure, excellent conductivity, and good redox electrochemical performance.
    Secondly, the introduction of an open porous network structure is conducive to shortening the mass transfer path, effectively increasing the contact area and exposing more The surface reaction active sites, so it is favored in the fields of energy storage conversion, sensing and so on

    .
    Therefore, this paper focuses on the potential applications of a series of representative porous conductive polymer nanostructure materials in batteries, supercapacitors, sensors and other directions (such as flexible electronics, CO2 adsorption, biomedicine, pollutant removal, etc.
    ).
    The relationship between material structure and performance is pointed out, and the main problems and challenges faced by its application are also pointed out, which provides a useful reference for the development of porous conductive polymer nanomaterials

    .

      

      Figure 3 PDMS-coated porous PPy/GO porous composite material is applied to wirelessly powered wearable electronic devices

      [Summary and Outlook]

      So far, the controllable synthesis of porous conductive polymer nanostructure materials with multi-dimensional and different pore structures based on templated and non-templated strategies and their cutting-edge applications have been realized and widely developed, but still can be made in the following aspects Further efforts:

      1.
    The precise control of composition, morphology, and structure in the synthesis of conductive polymers is an important factor in achieving excellent performance.
    New templates, new assembly strategies or further designs at the atomic and molecular level are developed to achieve new nanostructures of conductive polymers ( For example, the construction of an orderly porous structure and the customization of diversified functions will be particularly important

    .

      2.
    Chain entanglement in the process of linear polymerization and growth of conductive polymer is not conducive to the great advantages of conjugated structure.
    Control the entanglement of linear polymer chains and realize the orderly arrangement of porous conductive polymer crystals to promote high-performance porous conductive polymerization.
    The development of objects may be another huge challenge

    .

      3.
    Although porous conductive polymers have shown great advantages in many fields, their large-scale, simple and controllable preparation, and their practical application expansion are also full of challenges

    .

      This paper was supported by the National Natural Science Foundation of China (Project Nos.
    : 51773062 and 61831021) and other projects.
    East China Normal University is the first unit and communication unit of the paper

    .


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