Electrochemical weaving machine for two-dimensional free-standing synthesis of conducting polymer sheet with microchannel structure

IF 3.4 4区工程技术 Q2 POLYMER SCIENCE

Macromolecular Research Pub Date : 2025-04-23 DOI:10.1007/s13233-025-00407-5

Mahsa Amiri, Naader Alizadeh

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引用次数: 0

Abstract

A novel approach, termed electrochemical weaving, is presented for the substrate-free and scalable synthesis of conducting polypyrrole (PPy) sheets. The PPy sheet grows in less than 1 h at the surface of the solution containing NO₃⁻ and Py, while remaining attached to the anode on one side under a constant anodic voltage. The shape and dimensions of the PPy sheet can be adjusted by modifying the shape and dimensions of the electrodes. The presence of NO₃⁻ is confirmed to be essential in any form, as it produces the oxidizing species NO⁺, which initiates the surface polymerization of PPy. The prepared PPy sheet has two distinct sides: the liquid-side, which exhibits a spherical morphology, and the air-side, which features a microchannel structure. The air-side surface has a grooved texture visible to the naked eye and this grooved structure appears to grow toward the counter electrode. The resulting sheet is flexible, easily manipulated, and can be held by hand. This study introduces a simple method for fabricating of high-surface-area PPy films with microchannel structures using an electrochemical 2D printing technique. This emerging method has potential application in various research fields requiring scalable conducting polymer sheets.

Graphical Abstract

Electrochemical weaving machine for scalable growth of conducting polymer sheet

Abstract Image

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电化学编织机用于二维独立合成具有微通道结构的导电聚合物片材

提出了一种新的方法，称为电化学编织，用于无衬底和可扩展合成导电聚吡咯（PPy）片材。在含有NO3−和Py的溶液表面，PPy薄片在不到1 h的时间内生长，同时在恒定的阳极电压下仍保持在阳极的一侧。通过改变电极的形状和尺寸，可以调整PPy片材的形状和尺寸。NO3−的存在被证实在任何形式下都是必不可少的，因为它产生氧化性物质NO+，这引发了PPy的表面聚合。制备的PPy片具有两个不同的侧面：液体侧，呈现球形形态，空气侧，具有微通道结构。空气侧表面具有肉眼可见的沟槽纹理，并且该沟槽结构似乎向对电极方向生长。所得到的薄片是柔性的，易于操作，并且可以用手握住。本研究介绍了一种利用电化学二维打印技术制备具有微通道结构的高表面积PPy薄膜的简单方法。这种新方法在各种需要可伸缩导电聚合物片的研究领域具有潜在的应用前景。图示：用于导电聚合物片材可伸缩生长的电化学织布机

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来源期刊

Macromolecular Research 工程技术-高分子科学

CiteScore

4.70

自引率

8.30%

发文量

100

审稿时长

1.3 months

期刊介绍： Original research on all aspects of polymer science, engineering and technology, including nanotechnology Presents original research articles on all aspects of polymer science, engineering and technology Coverage extends to such topics as nanotechnology, biotechnology and information technology The English-language journal of the Polymer Society of Korea Macromolecular Research is a scientific journal published monthly by the Polymer Society of Korea. Macromolecular Research publishes original researches on all aspects of polymer science, engineering, and technology as well as new emerging technologies using polymeric materials including nanotechnology, biotechnology, and information technology in forms of Articles, Communications, Notes, Reviews, and Feature articles.