Optical spectroscopic studies on poly(methyl methacrylate) doped by charge transfer complex

Abstract

Polymeric sheets of poly(methyl methacrylate) (PMMA) doped by charge-transfer (CT) complex of perylene/iodine (pyr/I 2 ), perylene/picric acid (pyr/PA) and perylene/chloranilic acid (pyr/CLA) were synthesized in methanol solvent at room temperature. The optical spectroscopic studies on PMMA polymer doped by charge transfer complex are determined by UV–Vis–NIR spectroscopy, Photoluminescence spectroscopy (PL), Vis–NIR diffused reflectance spectroscopy (DRS) and FTIR spectroscopy. The diffused reflectance spectroscopy (DRS) of the polymeric sheet samples is analyzed based on the Kubelka–Munk model. The indirect allowed optical band gaps of the polymeric sheet samples are estimated by applying absorption spectrum fitting (ASF) and Tauc's methods. Here we report the optical spectroscopic studies on PMMA polymer doped by charge transfer complex as potential materials to be used in optoelectronic devices. • Charge-transfer complexes have an important role in solar energy storage and organic semiconductors fields. • Polymeric sheets of PMMA doped by charge-transfer complex were synthesized. • Optical spectroscopic studies on PMMA polymer doped by charge transfer were investigated. • The optical band gap of polymeric sheets was calculated by the DRS, ASF and Tauc's equations. • The spectral behaviour of the refractive index and the specific polarizability were obtained.