The Synthesis of Polyethersulfone (PES) and its Derivatives as Polymer Light Emitting Diode (PLED) Material

摘要

Nowadays some types of polymer are being developed as Polymer Light Emitting Diode (PLED) materials because they have some advantages compared to small molecule organic light emitting diode (SM-OLED). Polymers which have numerous conjugated double bonds can be used as PLED materials, such as the polyethersulfone (PES) and its derivatives. Therefore, further research on the synthesis of PES and its derivatives is needed to explore their potential as PLED materials. In this research, the synthesis of polyethersulfone has been performed utilizing Microwave Assisted Organic Synthesis (MAOS) method and subsequently the synthesized PES was being transformed into the nitrated PES (PES-NO_2) and the aminated PES (PES-NH_2) utilizing the conventional method (reflux). The structure of the synthesized polymers was confirmed by analyzing the FT-IR and ~1H-NMR spectra data. The potent of the synthesized polymers as PLED material was analyzed from fluorescence emission spectral data (in NMP, N-methyl pyrrolidone) showing the maximum emission wavelengths in the blue light of visible area, which were 444 nm (PES);;356 nm and 444 nm (PES-NO_2);;and 440 nm (PES-NH_2). These results showed that all of the synthesized polymers have the potent to be used as PLED.