Water dispersible polyanilines made with polymeric acid colloids for electronics applications
View Patent ↗Compositions are provided including aqueous dispersions of at least one polyaniline and at least one colloid-forming polymeric. New compositions are useful in electronically conductive and semi-conductive layers in electronic devices and other applications. Also provided are methods of making the compositions.
1. A composition comprising an aqueous dispersion of at least one polyaniline and at least one colloid-forming fluorinated polymeric acid.
2. A composition according to claim 1 , wherein said polyaniline has at least one aniline monomer units having a formula selected from the group consisting of Formula II or Formula III,
wherein:
n is an integer from 0 to 4;
m is an integer from 1 to 5, with the proviso that n+m=5; and
R 1 is independently selected so as to be the same or different at each occurrence and is selected from alkyl, alkenyl, alkoxy, cycloalkyl, cycloalkenyl, alkanoyl, alkythio, aryloxy, alkylthioalkyl, alkylaryl, arylalkyl, amino, alkylamino, dialkylamino, aryl, alkylsulfinyl, alkoxyalkyl, alkylsulfonyl, arylthio, arylsulfinyl, alkoxycarbonyl, arylsulfonyl, carboxylic acid, halogen, cyano, or alkyl substituted with one or more of sulfonic acid, carboxylic acid, halo, nitro, cyano or epoxy moieties; or any two R 1 groups together may form an alkylene or alkenylene chain completing a 3, 4, 5, 6, or 7-membered aromatic or alicyclic ring, which ring may optionally include one or more divalent nitrogen, sulfur or oxygen atoms.
3. A composition according to claim 2 , wherein m is 5.
4. A composition according to claim 1 , wherein said colloid-forming polymeric acid is selected from the group consisting of polymeric sulfonic acids, polymeric carboxylic acids, polymeric acrylic acids, polymeric phosphoric acids, polymeric phosphonic acid and mixtures thereof.
5. A composition according to claim 1 , wherein said polymeric acid comprises a fluorinated polymeric sulfonic acid.
6. A composition according to claim 5 , wherein said fluorinated polymeric sulfonic acid comprises a perfluoroalkylenesulfonic acid.
7. The composition of claim 1 further comprising at least one selected from the group consisting of a conductive polymer, metal particles, graphite fibers, graphite particles, carbon nanotubes, carbon nanoparticles, metal nanowires, organic conductive inks, organic conductive pastes, inorganic conductive inks, inorganic conductive pastes, charge transport materials, semiconductive inorganic oxide nano-particles, insulating inorganic oxide nano-particles, piezoelectric oxide nano-particles, piezoelectric polymers, pyrroelectric oxide nano-particles, pyrroelectric polymers, ferroelectric oxide nano-particles, ferroelectric polymers, dispersing agents, crosslinking agents and combinations thereof.
8. A composition according to claim 5 , wherein said fluorinated polymeric sulfonic acid comprises a perfluorinated, carbon backbone and side chains represented by the formula
—(O—CF 2 CFR f ) a —O—CF 2 CFR′ f SO 3 X
wherein Rf and R′f are independently selected from F, Cl or a perfluorinated alkyl group having 1 to 10 carbon atoms, a=0, 1 or 2, and X is H.