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Published on: August 7, 2018
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Innocuous solvent-based, low-temperature curable, and highly transparent photosensitive polyimides developed using
Huifa Meng1,2, Kaijin Chen2, Chuying Li2
1School of Chemical Engineering and Technology, GBRCE for Functional Molecular Engineering, IGCME, Sun Yat-sen University 519082 Zhuhai China.
Chemical Science
|January 20, 2025
Summary
This study developed a novel, partially bio-based photosensitive polyimide (PSPI) using magnolol. The new PSPI offers low-temperature curing and high transparency, addressing limitations in optical device applications.
Area of Science:
- Materials Science
- Polymer Chemistry
- Organic Electronics
Background:
- Traditional photosensitive polyimides (PSPI) require high curing temperatures and have low transparency.
- These limitations restrict their use in thermally sensitive optical devices and energy-intensive manufacturing processes.
Purpose of the Study:
- To synthesize novel, soluble photosensitive polyimide resins with improved properties.
- To develop a low-temperature curable and highly transparent PSPI for advanced optical applications.
Main Methods:
- Synthesized soluble photosensitive polyimide resins utilizing a bio-based magnolol monomer.
- Formulated a photoresist using the synthesized polyimides and non-toxic solvents like PGEMA.
- Cured the polyimide films via photoinitiated thiol-ene radical reactions.
Main Results:
- Achieved low-temperature curing at 180 °C.
- Demonstrated significantly reduced solvent residue with PGEMA compared to NMP.
- Obtained high transparency (87.8% visible light transmittance) in cured C-PI-3 films.
- Exhibited excellent thermal stability, dielectric properties, and photo-patterning capabilities.
Conclusions:
- The developed PSPI is partially bio-based and uses innocuous solvents, offering low-temperature curability and high transparency.
- This material presents a pioneering solution for energy efficiency and environmental sustainability in PSPI.
- The material is suitable for applications in color filters and other optical devices.
