Advanced Plasmonic Nanosensors for the SERS Ultradetection of Non-Conventional Analytes

Identifier:  TDX:4032

Handle: https://hdl.handle.net/20.500.11797/TDX4032

Authors:  Zorlu, Tolga

Abstract:
Surface-enhanced Raman Spectroscopy (SERS) is a spectroscopy technique based on the observations of Raman and Krishnan nearly a century ago and derived from the phenomena they presented. In its simplest form, it aims to use plasmonic materials such as gold and silver, and increase the Raman signals or in other words, their molecular fingerprints, which are formed because of photons scattering inelastically as a result of the interaction of molecules with light. In this way, the technique has gained popularity in different fields from environmental monitoring to sensing biological molecules or metal ions. The aim of this PhD thesis is to produce strong and functional composite SERS substrates for different purposes. For this, the SERS-based functionality of composites resulting from the integration of zeolitic imidazolate frameworks (ZIFs) into plasmonic particles and their plasmonic natures were investigated. ZIFs are one of the ideal metal-organic frameworks (MOFs) to be easily integrated into composites produced for thesis studies, thereby revealing more sophisticated SERS substrates. In summary, this doctoral thesis contributes to the use of metal-organic frameworks in the field of plasmonics and thus to the advancement of novel SERS substrate designs.