UV-VIS spectroscopic studies of one pot chemically synthesized polyindole/poly(vinyl acetate) composite films

This letter reports the UV-VIS spectroscopic studies of novel one pot synthesized polyindole/poly(vinyl acetate) (PIN/PVAc) composite films chemically using an oxidant nickel nitrate. The surface morphology of the prepared sample was analyzed through field emission scanning electron microscope (FE-SEM), which shows irregular, non-porous structure and spongy amorphous morphology. The UV-VIS spectroscopy was performed to study optical parameters of PIN/PVAc composite films. These polymeric composite films exhibited strong absorption below 250 nm with a well-defined absorption peak at around 225 nm. The optical band gap energy values of the prepared samples range over 3.924-5.146 eV. However, the maximum optical conductivity of PIN/PVAc composite film was found to be 2.92 x 10(8) s(-1) at 350 nm. (C) 2014 Elsevier B.V. All rights reserved.