PVA –Bismuth zirconium oxide nanocomposites using BSA protein: Properties and their applications to WLEDs, anti-counterfeiting and forensic fields

Abstract

Modification of Bi2Zr2O7: Sm3+ (BZOS) Nanocomposites (NCs) with surface functionalization by using bovine serum albumin (BSA) dispersed into the poly vinyl alcohol (PVA) polymer matrix (PM) was reported. This material provides the flexibility and also helps to measure the hydrophilic nature of the surface. PVA/BZOS@BSA (2 – 10 wt%) NC films were synthesized by sonication followed by solution casting method. The crystal structure, morphological and photoluminescence properties were studied using different characterization methods namely PXRD (Powder X-Ray Diffraction), SEM (Scanning Electron Microscopy), TEM (Transmission Electron Microscopy) and PL (Photoluminescence). Here, the prepared NCs showed high luminescence intensity with great fluorescent pattern. Efficient energy transfers from the co-ordinated organic modifier to the rare earth (RE) ions happened to increase the PL emission. Hence, these NCs can be facilitated as the preferable candidates for the latent fingerprint (LFP) visualization and suitable materials for the security ink fabrication. Also, the intense orange-red emission confirms the use of these materials for the component of WLEDs (White Light Emitting Diodes) and optoelectronic devices.