Aqueous blends and films comprising a first electrically conducting conjugated polymer and a second electrically conducting conjugated polymer

A hole injection film comprising at least one dopant, a first conjugated polymer having a conductivity of greater than about 10−7 S/cm and a second conjugated polymer having a conductivity greater than about 10−7 S/cm formed by (a) depositing onto an article a blend comprising water, at least one dopant, a first conjugated polymer having a conductivity of greater than about 10−7 S/cm and a second conjugated polymer having a conductivity greater than about 10−7 S/cm wherein the first and second polymer are dispersed or dissolved in water and (b) removing the water to form the film on the article;

• wherein the film has a higher conductivity than the first or second conjugated polymer when measured using a four point probe methods, and wherein the first conjugated polymer comprises poly(aniline)sulfonate and the second conjugated polymer comprises poly(pyrrole) doped with an organic acid.

A film formed by a process comprising:

• (a) depositing onto an article a blend comprising water, a first polymer having a conductivity of greater than about 10−7 S/cm and a second polymer having a conductivity greater than about 10−7 S/cm, and (b) removing water to form the film on the article;
• wherein the first polymer comprises poly(aniline)sulfonate and the second polymer comprises poly(3,4-ethylenedioxythiophene) doped with poly(styrene sulfonic acid);
• wherein said conductivity is measured using a four point probe method.

A film formed by a process comprising:

• (a) depositing onto an article a blend comprising water, a first polymer having a conductivity of greater than about 10−7 S/cm and a second polymer having a conductivity greater than about 10−7 S/cm, and (b) removing water to form the film on the article;
• wherein the first polymer comprises poly(3,4-ethylenedioxythiophene) doped with poly(styrene sulfonic acid) and the second polymer comprises poly(thieno[3,4-b]thiophene) doped with poly(styrene sulfonic acid);
• wherein conductivity is measured using a four point probe method.

A film formed from a blend comprising water, a first conjugated polymer having a conductivity of greater than about 10−7 S/cm and a second conjugated polymer having a conductivity greater than about 10−7 S/cm;

• wherein the film has a synergistic electrical conductivity over the weight averaged values of the unblended conjugated polymers wherein one of said conjugated polymers comprises a polythienothiophene;
• and wherein conductivity is measured by using a four point probe method.