Conductive composite fiber bundle, preparation method thereof and organic electrochemical transistor

Abstract

The invention provides a conductive composite fiber bundle, a preparation method thereof and an organic electrochemical transistor. The preparation method comprises the steps of immersing a fiber bundle in a dispersed carbon nanotube dispersion to form a compact carbon nanotube layer on the fiber bundle, and polymerizing 3,4-ethylenedioxythiophene in situ onto the carbon nanotube-treated fiber bundle through an inverse microemulsion method to obtain a uniform compact nanowire-like poly(3,4-ethylenedioxythiophene) conductive composite fiber bundle. The conductive composite fiber bundle obtainedcan be fitted to gel electrolyte to obtain a fiber-based organic electrochemical transistor. According to the preparation method, through the deposition of multi-walled carbon nanotubes on the surface of the fiber bundle and the advantages of inverse microemulsion, the PEDOT (poly(3,4-ethylenedioxythiophene)) polymerization process and the morphology are regulated and controlled, a regular transistor structure beneficial to electron transport and migration is formed, and the conductive composite fiber bundle-based organic electrochemical transistor prepared can be applied to the fields of wearable electronic devices, sensors and the like.

Description

technical field [0001] The invention relates to the field of electronic devices prepared from conductive fiber materials, in particular to a conductive composite fiber bundle, a preparation method thereof and an organic electrochemical transistor. Background technique [0002] In recent years, conductive polymers have been widely used in the fields of modified electrodes, electrochemistry, and sensors. Among them, poly-3,4-ethylenedioxythiophene (PEDOT), the most environmentally friendly conductive polymer, stands out among many conductive polymers due to its simple molecular structure, high conductivity, good stability and small energy gap. Extensive research and attention. Various nanostructured conductive materials based on PEDOT, such as nanosheets, nanoflowers, and nanowires, exhibit high specific surface area, high conductivity, fast electron transfer rate, hydrophobic interaction, and good biocompatibility. [0003] Organic materials have the characteristics of low ...

AI Technical Summary

Problems solved by technology

[0006] However, when the fiber bundle is directly immersed in an organic solution, 3,4-ethylenedioxythiophene can only be attached to the surface of the fiber through in-situ polymerization, and the distribution of the formed nanowires is not uniform, and the content on the surface of the fiber is less, and the fiber-to-fiber The gaps between them cannot be filled by poly-3,4-ethylenedioxythiophene, which leads to the obstruction of carrier transport, which affects the conductivity and electrical properties of the transistor.

Images