Dispersions and films comprising conducting polymer for optoelectronic devices

摘要

A dispersion, and a film and optoelectronic devices formed from the dispersion are provided. The dispersion comprising conducting polymer containing particles having a particle size of less than 450 nm, wherein the conducting polymer comprises substituted or unsubstituted, uncharged or charged polymerized units of thieno[3,4-b]thiophene, and wherein a film drop cast from the dispersion has a conductivity from 10−1 to 10−6 S/cm measured using the four point probe method.

主权项

1. A method for making a dispersion comprising at least one conducting polymer the method comprising:
(a) combining water, at least one thiophene and at least one polymeric carboxylic acid, (b) introducing at least one oxidant to form a reaction mixture, (c) polymerizing the reaction mixture at a temperature of less than 50° C. while stirring the reaction mixture; (d) filtering the reaction mixture, and (e) recovering the dispersion; wherein the method is conducted for a time sufficient to generate particles having a particle size of less than 200 nm, wherein a film drop cast from the dispersion has a conductivity from 10−3 to 10−6 S/cm when measured using the four point probe method, wherein the dispersion comprises less than 1 ppm of metal ions and less than 1 ppm of anions of inorganic acids, and wherein the stirring is shear mixing from 5,000 rpm to 24,000 rpm.