New Organic Dispersions of Conducting Polymers Using Polymeric Ionic Liquids as Stabilizers

• Published in: Macromolecular rapid communications. Vol. 26; no. 14; pp. 1122 - 1126
• Main Authors: Marcilla, Rebeca, Ochoteco, Estibalitz, Pozo-Gonzalo, Cristina, Grande, Hans, Pomposo, Jose A., Mecerreyes, David
• Format: Journal Article
• Language: English
• Published: Weinheim WILEY-VCH Verlag 21.07.2005; WILEY‐VCH Verlag; Wiley
• Subjects: Applied sciences; conducting polymers; dispersions; Exact sciences and technology; ionic liquids; Organic polymers; phase transfer; Physicochemistry of polymers; polyelectrolytes; Polymers with particular properties; Preparation, kinetics, thermodynamics, mechanism and catalysts; Solvent effect; Particle size; Electrical conductivity; Electrical properties; Chemical precipitation; Coagulation; Experimental study; Imidazolium(vinyl) salt polymer; polyelectrolytes; Conducting polymers; Heterogeneous polymerization; Organic solvent; Thiophene derivative polymer; dispersions; Preparation; Oxidative polymerization; ionic liquids; Aqueous dispersion; Pyrrole polymer; Aniline polymer; phase transfer
• ISSN: 1022-1336; 1521-3927
• DOI: 10.1002/marc.200500250

Polypyrrole (PPy), polyaniline (PANI), and poly(ethylenedioxythiophene) (PEDOT) aqueous dispersions were prepared by polymerizing the corresponding monomer in the presence of a polymeric ionic liquid (PIL), poly(1‐vinyl‐3‐ethylimidazolium bromide). By addition of bispentafluoroethanesulfonimide lithium salt, the PIL stabilizer becomes hydrophobic and precipitates in water and traps the conducting polymer microparticles inside. The dispersion of the recovered powders in organic solvents leads to organic conducting dispersions. After casting the organic dispersions, hydrophobic films with electrical conductivity values as high as 0.1 S · cm−1 were obtained. A new synthetic route to new organic dispersions.