Size-driven fluorescent properties in Nanophotonics

Abstract

Despite the diverse application of nanotechnology, nanophotonics is still behind the curtains. There's limited insight into how intrinsic and extrinsic factors affects the photonic properties of nanoparticles. In this work, an attempt is made to critique the nature of particles exploiting its micro, nano, and quantum size as intrinsic factors. This fluorescence can be regulated with the aid of extrinsic factors too viz- temperature, pH etc. Ex-vivo study in hepatic tissue portray bioaccumulation as well as enzymatic shifts. Fluorescence decreases with increases in temperature but tends to be constant at 262C for all three sizes and it increases with increases in pH with transition between pH=2 and 4 however, this increase is maximum in Quantum size. Concentration has parabolic gradient in all three sizes. Quantum particles show greater accumulation and effect on peroxidase activity as compared to other sizes. It is concluded that the fluorescence intensity of particles increases with decrease in size. However, its value can be regulated by altering extrinsic factors. Size variations also meet with extent of bioaccumulation. As reduced peroxidase activity indicates compromised antioxidant defence and increased susceptibility to oxidative damage. These studies serve as basis for engineering application of fluorophores regulating their fluorescent properties.