Sulfonation of conducting polymers and OLED, photovoltaic, and ESD devices
AssigneeSolvay USA Inc.
InventorsVenkataramanan Seshadri, Brian Woodworth, Christopher Greco, Darin Laird, Mathew Mathai
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Abstract
Conducting polymer systems for hole injection or transport layer applications including a composition comprising: a water soluble or water dispersible regioregular polythiophene comprising (i) at least one organic substituent, and (ii) at least one sulfonate substituent comprising sulfonate sulfur bonding directly to the polythiophene backbone. The polythiophene can be water soluble, water dispersible, or water swellable. They can be self-doped. The organic substituent can be an alkoxy substituent, or an alkyl substituent. OLED, PLED, SMOLED, PV, and ESD applications can be used.
Claims20
A composition comprising a sulfonated polythiophene obtained by:
- reacting a soluble polythiophene comprising at least one organic substituent with a sulfonation reagent to form a sulfonated polythiophene comprising at least one sulfonate substituent comprising sulfonate sulfur bonding directly to the polythiophene backbone, and
- wherein the sulfonated polythiophene has a degree of sulfonation of at least 10%.
A composition comprising a sulfonated polythiophene comprising (i) at least one organic substituent, and (ii) at least one sulfonate substituent comprising sulfonate sulfur bonding directly to the polythiophene backbone, wherein the sulfonated polythiophene has a degree of sulfonation of at least 10%.
Dependencies are inferred from the claim text.