Optical structural and thermal studies of TiO2@ZnO core-shell incorporated methylene blue dye doped PVA polymer nanocomposites

Abstract This manuscript makes an effort to achieve the synthesis of titanium dioxide (TiO 2 )@ Zinc oxide (ZnO)core@shell also development and study of methylene blue (MB)/TiO 2 @ZnO/poly(vinyl chloride) (PVA)polymer nanocomposites (PNCs) for optical applications. The PNCs were constructed using easy solution-casting method, advertised good UV–vis and fluorescence properties. The fluorescence emission spectra of MB/TiO 2 @ZnO/PVA PNCs show the broad peak around 685 nm for both 614 nm and 665 nm excitation wavelengths for all samples and it is observed that the intensity falls off as increase in the dye amount. The x-ray diffraction (XRD) spectra of well-developed PNCs exhibit amorphous nature and the other outcomes obtained by various techniques correlating with each other. Hence, the prepared PNCs can be used for fabricating red light emitting diode (LED) to improve the eye sight of human being.