A method for obtaining a water-processable n-type conducting polymer
AssigneeWestra Materials AB
InventorsQifan Li, Jun-Da Huang, Chi-Yuan Yang, Simone Fabiano
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Abstract
The present invention relates to a method for manufacturing a water-processable n-type conducting polymer, the method comprising the steps of: a) adding a monomer to a solvent system comprising water in the presence of a catalyst and a base, thus providing a reaction solution; b) allowing the monomer to polymerize in the reaction solution thus obtaining an n-type conducting polymer; c) post-treating the n-type conducting polymer dispersion thus obtaining a water-processable n-type conducting polymer.
Claims16
A method for manufacturing a water-processable n-type conducting polymer, said method comprising the steps of:
- a) adding a monomer to a solvent system comprising water in the presence of a catalyst and a base, thus providing a reaction solution;
- b) allowing said monomer to polymerize in said reaction solution thus obtaining an n-type conducting polymer;
- c) post-treating the n-type conducting polymer dispersion thus obtaining a water-processable n-type conducting polymer.
The method according to any one of the preceding claims, wherein said catalyst is selected from a group consisting of:
- wherein R0, R1 and R3 are independently H, Me, or —CH2R4R5COOH;
- R4, R5 are independently H or Me;
- R2 is —COOH or —SO2OH.
The method according to any one of the preceding claims, wherein said catalyst is selected the group consisting of 3-(2,4,5-trimethyl-3,6-dioxocyclohexa-1,4-dien-1-yl)propanoic acid (TMQ-PA, R0═R1═R3=Me, R4═R5═H, R2═—COOH), 3,3′-(4,5-dimethyl-3,6-dioxocyclohexa-1,4-diene-1,2-diyl)dipropionic acid (AAMMQ, R0═R1=Me, R3═—CH2R4R5COOH, R4, R5═H or Me, R2═—COOH), 3,3′-(2,5-dimethyl-3,6-dioxocyclohexa-1,4-diene-1,4-diyl)dipropionic acid (AMAMQ, R1═R3=Me, R0═—CH2R4R5COOH, R4, R5═H or Me, R2═—COOH) and combinations thereof.
The method according to any one of the preceding claims, wherein said base is MOH, wherein M is selected from Li+, Na+, K+, Me4N+, Bu4N+ or combination thereof.
The method according to any one of the preceding claims, said method further comprising a step of:
- a′) adding a surfactant to said water-processable n-type conducting polymer.
The method according to any one of the preceding claims, wherein said solvent system further comprises a polar aprotic solvent, and wherein said method further comprises the step of:
- d) solvent exchanging such that said polar aprotic solvent is removed.
The method according to any one of the preceding claims, wherein said step b) occurs at a temperature from 20° C. to 150° C.
The method according to any one of the preceding claims, wherein said monomer is 3,7-dihydrobenzo[1,2-b:4,5-b]difuran-2,6-dione (HBFDO), and wherein said n-type conducting polymer is poly[(2,2′-(2,5-dihydroxy-1,4-phenylene)diacetic acid)-co-3,7-dihydrobenzo[1,2-b:4,5-b′]difuran-2,6-dione](PDADF), poly[(2,2′-(2,5-dihydroxy-1,4-phenylene)diacetic acid) (PDADF-P), or mixture thereof.
The method according to any one of the preceding claims, wherein said method further comprises a step of:
- c′) removing said catalyst by extraction, oxidation and recycling said catalyst.
A water-processable n-type conducting polymer comprising a general conjugated structure having a central symmetrical benzene ring fused with two rings, and wherein the water-processable n-type conducting polymer further comprises segments having a benzene ring comprising at least one substituent having a relatively electronegative element attached by a single bond to carbon, wherein each substituent has an acidic hydrogen.
Dependencies are inferred from the claim text.