Blue emitting amino-DPQ with PS and PMMA phosphors for organic light emitting diode

New conjugated polymer, 2(4′-aminophenyl)-4-phenylquinoline i.e., amino-DPQ have been synthesized by Friedlander condensation method at 140 °C. The Optical, structural and thermal properties of the amino-DPQ has been studied. The blended thin films of amino-DPQ with PMMA and PS at different wt% concentrations have been prepared. The UV–vis absorption spectra could provide a good deal of information on the electronic structures of the polymeric compound. When powder form of amino-DPQ is excited at 385 nm, it emits intense blue light of wavelength 486 nm. The blended thin films of amino-DPQ with PMMA and PS at different wt% concentrations show the emission peak in the range of 415–450 nm. Hence, the blue emitting 2(4′-aminophenyl)-4-phenylquinoline (amino-DPQ) has generated considerable interest owing to their good photoluminescence efficiencies.

Research highlights▶ The blended thin films of synthesized polymeric compound at lower concentration are cost effective and give better emission in blue region. ▶ These outstanding properties make amino-DPQ, attractive candidates as advanced materials in the field of photonics and electronics. ▶ In term of applications, with inorganic or metallic materials, organic molecules and their derivatives and complexes have drawn many researchers’ interest as candidate materials for nanoscale electronic devices of the next generation.