Preparation method of polypyrrole nano fibers

Abstract

The invention belongs to the technical field of preparation of high polymer nano materials, and relates to a preparation method of polypyrrole nano fibers. The preparation method comprises the following steps of: adopting a diazosulfide fluorescer namely 3,3-bis(4-(4,4-diphenylamine)cinnamenyl)-{1,2,5-}diazosulfide base)-2,2'-dimethoxy-1,1'-binaphthyl (TBB for short) as a doping agent, and doping the diazosulfide fluorescer TBB to a high polymer main chain; and performing self assembly in an aqueous solution to prepare the polypyrrole nano fibers with fluorescence properties and electrical conductivity. The preparation method is simple, scientific and reliable in principle, environment-friendly and suitable for large-scale production; and the prepared polypyrrole nano fibers are good in flexibility, strong in enwinding property and good in stability, have excellent fluorescence properties while keeping good self electrical conductivity, and have wide application prospects in the fields of multifunctional antistatic coatings, display materials, micro and nano material marks, micro and nano light-emitting devices and solar batteries.

Description

Technical field: [0001] The invention belongs to the technical field of polymer nanomaterial preparation, and relates to a process for preparing nanofibers with fluorescent and conductive properties by doping new fluorescent substances in conductive polymers, in particular to a method for preparing polypyrrole nanofibers. Background technique: [0002] Conductive polymers are new photoelectric functional materials that appeared in the late 20th century. They have a series of unique electrical, electrochemical, optical and mechanical properties. As a new generation of polymer materials, conductive polymers not only have metal-like electrical properties, but also Maintain the light weight and processability of polymers, and are widely used in display materials, antistatic coatings, sensors, various electronic devices and solar cells. Common conductive polymers include polyacetylene, polythiophene, polypyrrole, poly Aniline, polyphenylene, polyphenylene vinylene and polydiyne, ...

AI Technical Summary

Problems solved by technology

Although conductive polymers such as polypyrrole and polyaniline have relatively good electrical properties, the optical properties of polypyrrole and polyaniline are not outstanding. At present, there are two main ideas for improving the optical properties of polypyrrole and polyaniline: one is The idea of ​​composite materials is to add other materials with excellent optical properties to conductive polypyrrole or polyaniline; the other is to optimize the idea of ​​dopants, using other protonic acids commonly used in the polymerization process of polypyrrole or polyaniline Compounds with good optical properties can be replaced by compounds with good optical properties. The polypyrrole or polyaniline prepared in this way is still a pure substance and has both optical and electrical properties. For example, azobenzene and its derivatives are a typical type of photochromic compounds. The Institute of Chemistry, Chinese Academy of Sciences Wan Meixiang's research group doped polyaniline molecular chains with azobenzenesulfonic acid instead of commonly used protonic acids, and prepared polyaniline nanotubes and nanowires with photoisomerization properties under ultraviolet light (Chem.Mater.14( 2002) 3486) and film (Appl.Phys.Lett.84(2004)1898), explored the photoelectric functional application of conductive polymers, but these preparation methods are complicated, and the optical and electrical properties of the prepared nanofibers Poor, not suitable for large-scale production

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