Langmuir-Blodgett deposition of functionalized AuNRs towards multidimensional LSPR sensing

Abstract

Understanding the surface plasmon resonance properties of gold nanorods (AuNRs) and exploring their sensitivity has attracted much attention due to the potential applications in the biomedical field; including detection of various disease biomarkers through an optimal localized surface plasmon resonance (LSPR). There are a variety of different techniques available for the synthesis of AuNRs, one of which is the bottom-up approach known as seed-mediated growth. This method introduces a gold seed into a growth solution to obtain gold nanorods of a desired aspect ratio. The goal is to assemble these nanorods at the air-water interface of a Langmuir trough and then compress these nanorods such that a uniform monolayer of well orientated nanorods can be obtained. The goal of this research is to use this monolayer for the synthesis of an LSPR sensor, which will be used for the detection of biomarkers.