1. Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India;2. Department of Materials and Metallurgical Engineering, Indian Institute of Technology Kanpur, Kanpur 208 016, India
Abstract:
PPP derivatives with high molecular weights were synthesized and characterized by FT‐IR, 1H, 13C NMR and GPC. The decomposition temperatures of 2a–2c were above 300–400 °C. DSC analysis indicated their nature to be crystalline as all of them exhibited a melt temperature on controlled heating. Optical and electrochemical band gaps was determined using UV/Vis spectroscopy and CV. Single‐layer PLEDs fabricated with 2a–2c displayed high threshold voltages due to high potential barrier for holes. Their EL spectra reveal a small shift in blue peak and the emission form higher wavelength shoulder peak is enhanced.
