Esters containing aromatic groups as solvents for organic electronic formulations

US11770971B2 · kind B2 · utility

Assignee

• Merck Patent GmbH · DE

Inventors

• Gaëlle Béalle · Heidelberg, DE
• Christoph Leonhard · Otzberg, DE
• Hsin-Rong Tseng · Tainan, TW
• Irina Martynova · Griesheim, DE
• Aurélie Ludemann · Frankfurt, DE
• Edgar Kluge · Groß-Gerau, DE
• Anja Jatsch · Frankfurt am Main, DE
• Manuel Hamburger · Mannheim, DE
• Li Wei Tan · Eastleigh, GB
• Pawel Miskiewicz · Southampton, GB
• Philip Edward May · Sidcup, GB
• Daniel Walker · Uppingham, GB

Key dates

• Filing date: Oct 11, 2021
• Grant date: Sep 26, 2023
• Expiry date: Oct 11, 2041

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E10/549
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates to formulations for the preparation of organic electronic devices (OLEDs) which comprise (A) at least one specific ester solvent containing an aromatic group and (B) at least one organic functional material selected from organic conductors, organic semiconductors, organic fluorescent compounds, organic phosphorescent compounds, organic light-absorbent compounds, organic light-sensitive compounds, organic photosensitisation agents and other organic photoactive compounds, selected from organometallic complexes of transition metals, rare earth metals, lanthanides and actinides.