Soluble conductive polymer and method for preparing same
AssigneeSung-Joon Lee
InventorsSung-Joo Lee, Seung-Koo Cho, Hong-Sup Lee, Seung-Gyu Kim
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Abstract
Disclosed is a conductive polymer, which is doped with an acid and has a weight-average molecular weight of 5,000 or less when provided in the form of a base type, with a solubility of 3% or more in a polar organic solvent. Because the conductive polymer is soluble in various polar organic solvents, the solvent may be freely selected depending on the end use of the conductive polymer and thus the conductive polymer has a very wide range of industrial applications. A method of preparing the conductive polymer is also provided, which is simple and generates a small amount of wastewater and thus reduces the preparation cost and is environmentally friendly.
Claims11
A method of preparing a conductive polymer, comprising:
- dissolving a substituted or unsubstituted aniline monomer, substituted or unsubstituted pyrrole monomer, or substituted or unsubstituted thiophene monomer in an organic solvent, thus obtaining a monomer solution;
- adding water to the monomer solution in an amount ranging from more than 0 parts by weight to 2.08 parts by weight based on 100 parts by weight of the organic solvent;
- adding a dopant and an oxidizer to the monomer solution in a random sequence so that respective reactions occur, thus obtaining a reaction mixture;
- and
- filtering the reaction mixture, thus obtaining a conductive polymer solution, where the conductive polymer has a weight-average molecular weight of 5,000 or less when provided in a base type and has a solubility of 3 wt % or more in any organic solvent selected from the group consisting of methylethylketone, N-methylpyrrolidinone (NMP), and dimethylsulfoxide (DMSO).
Dependencies are inferred from the claim text.