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Preparation and optical parameter characterization of two aldehyde derivative thin films for photonic applications by drop casting method
Author(s) -
Melavanki Raveendra,
Vaijayanthimala S.,
Yallur Basappa Chanabasappa,
Shelar Vikas M.,
Singh Diksha,
Sadasivuni Kishor Kumar,
Patil N.R.
Publication year - 2020
Publication title -
luminescence
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.428
H-Index - 45
eISSN - 1522-7243
pISSN - 1522-7235
DOI - 10.1002/bio.3800
Subject(s) - materials science , molar absorptivity , analytical chemistry (journal) , doping , absorption spectroscopy , fourier transform infrared spectroscopy , band gap , attenuation coefficient , thin film , refractive index , spectroscopy , drop (telecommunication) , absorption (acoustics) , polymer , optics , optoelectronics , chemistry , nanotechnology , organic chemistry , telecommunications , physics , quantum mechanics , computer science , composite material
Abstract In this study, thin films of polymer poly(methyl methacrylate) were prepared using a drop casting method. Two newly synthesized aldehyde derivatives, 2‐bromomalonaldehyde and 5,6‐dihydroimidazo[2,1‐b]thiazole‐2‐carbaldehyde, were used at different concentrations to dope the films. The prepared films were transparent and therefore studied for application in photonics. Optical characterization of the samples was carried out using different spectroscopy techniques. Absorption spectra for both samples were obtained using a UV–vis light spectrophotometer. Other significant optical parameters, such as refractive index, extinction coefficient, and band gap energies, were calculated from the absorption spectra. The effect of doping concentration on these parameters was studied. Emission spectra were obtained using a fluorescence spectrophotometer and the effect of doping was observed. Fourier transform infrared spectra of the doped films were obtained and compared with the pure compound to note changes in peak values and peak intensity. This present work studied the effect of doping on optical properties and examined the application of the samples for photonics.