Structural characteristics of thermally advanced polymer with intrinsic microporosity for application as flexible OLED substrate

The chemical and structural characteristics of solution-processed polymer with intrinsic microporosity (PIM) based on 9, 9-bis (4-hydroxyphenyl) fluorene (BHPF) film is investigated. A fully flexible transparent PIM exhibiting uniform high transmittance more than 90% within the visible light range demonstrated. stability further demonstrated relatively stable coefficient thermal expansion (CTE) characteristics. Additionally, has heat resistance that can withstand high-temperature processes at 250 °C. exhibits a remarkably glass transition temperature (Tg) 294.7 °C, indicating elevated temperatures. also surface energy, low roughness (Rq), peak-to-valley values 0.45 4.4 nm, respectively. This morphology confirms film’s superior characteristic in preventing short circuits or leakage current paths an organic electronic device. Finally, successfully tested as substrate for bottom-emitting light-emitting diode (OLED). investigation proven to be good candidate adopted fabricating advanced devices next-generation displays.