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Chemically transformed monolayers on acene thin films for improved metal/organic interfaces
Feifei Li1, Jonathan P Hopwood, Melissa M Galey
1Department of Chemistry and Biochemistry, Loyola University Chicago, Chicago, IL 60660, USA. jciszek@luc.edu.
Chemical Communications (Cambridge, England)
|November 6, 2019
Summary
Chemically modified acene thin films now feature thiol or carboxylic acid groups, enabling new monolayer reactions. This surface engineering improves metal contact adhesion for flexible electronics.
Area of Science:
- Materials Science
- Organic Electronics
- Surface Chemistry
Background:
- Acene thin films are crucial in organic electronics.
- Existing surface functionalities on acene films limit chemical modification options.
- Monolayer reactions are vital for advanced device fabrication.
Purpose of the Study:
- To chemically transform anhydride-terminated acene thin films.
- To introduce thiol and carboxylic acid functionalities.
- To enhance surface properties for improved device performance.
Main Methods:
- Chemical transformation of anhydride groups on acene thin films.
- Introduction of thiol functionalities.
- Introduction of carboxylic acid functionalities.
Main Results:
- Successfully created acene films with thiol and carboxylic acid groups.
- Achieved accelerated imide formation rates on the modified surface.
- Observed improved adhesion of top metal contacts on modified films.
- Demonstrated the potential for disulfide formation from thiol groups.
Conclusions:
- Chemically modified acene surfaces enable new reaction pathways.
- The modified surface enhances interfacial properties for flexible electronics.
- This approach offers a route to improved adhesion in bendable electronic devices.
