Polymer gate dielectrics are attractive for OFETs but often contain hydrophilic -OH groups that cause poor interfacial compatibility with hydrophobic organic semiconductors and lead to hysteresis and low performance. In this work, we exploit these -OH...
Polymer gate dielectrics are attractive for OFETs but often contain hydrophilic -OH groups that cause poor interfacial compatibility with hydrophobic organic semiconductors and lead to hysteresis and low performance. In this work, we exploit these -OH groups in poly(melamine-co-formaldehyde) methylated (PMF) by esterification with 1-pyrenebutyric acid to introduce pyrene units, which tune the surface energy, improve interfacial stability, and enhance π–π interactions with polycyclic semiconductors (pentacene, TIPS-pentacene). The resulting pyrene functionalized PMF dielectric enables improved semiconductor film growth, suppressed hysteresis, and enhanced charge transport, and further supports high gain complementary inverters using TIPS-pentacene/PTCDI-C5, demonstrating its promise for low-temperature, solution-processable, high performance organic electronics.