Biocompatible Gellucire<sup>®</sup> Inspired Bimetallic Nanohybrids for Augmented Fluorescence Emission Based on Graphene Oxide Interfacial Plasmonic Architectures
Aayush Rai, Seemesh Bhaskar, Kalathur Mohan Ganesh, Sai Sathish Ramamurthy
Abstract
Increased demand for high sensitivity techniques has resulted in a sustained search for sensing platforms that could provide reliable and highly sensitive detection of bio analytes and chemical species. Surface plasmon-coupled directional emission (SPCDE) has been explored as an alternative to conventionally used fluorescence detection methodologies to counter the inherent isotropic nature of this detection technique and increase its collection efficiency, thereby augmenting its sensitivity. This technology aids in realization of highly p-polarized emission with background suppression and excellent spectral resolution of emission profiles. The presented work explores the use of bimetallic nanohybrids synthesized through the one-pot synthesis in tandem with graphene oxide (GO) monolayer in spacer interface in the SPCDE platform to attain unprecedented emission enhancement of >1400-fold, opening the door to interfacial plasmonic architectures. Moreover, the use of biocompatible polymer Gellucire ® for the synthesis of nanohybrids highlights the sustainable approach in this research work.