Optical Characterization of Chalcone-Doped PMMA Thin Films for Photonic Applications Using Spectroscopic Technique of Drop Casting Method

摘要

Thin films of PMMA(polymethyl methacrylate)and chalcone prepared via drop casting method is reported here.The newly synthesized chalcone derivative namely 1-(3-methoxy-phenyl)-3-(4-nitro-phenyl)-propanone(C2)is used to dope the films with different concentrations.The prepared films are transparent so they are studied for applications in photonics.Optical characterization of the samples is done through different spectroscopy techniques.Absorption spectra of the samples is obtained using UV-vis spectrophotometer.Other significant optical parameters such as refractive index,extinction coefficient,and band gap energies are calculated from the absorption spectra.The doping effect is observed on emission spectra that is obtained using fluorescence spectrophotometer.Also,FTIR spectra of the doped films is obtained and compared with the pure compound to notice changes in the peak values and intensity of the peaks.The present work is done to study the effect of doping on optical properties and figure out the application of samples in photonics.