7. Creating Substrates for Surface-Enhanced Raman Spectroscopy with the Tollen's Reaction

Michael Smith Trine University
Faculty Sponsor(s): Anthony Layson Trine University
Raman Spectroscopy is used to obtain information about the composition and structure of molecules. Raman Spectroscopy often exhibits low signal intensity as a result a method is needed to enhance the signal. One method is Surface Enhanced Raman Spectroscopy (SERS), in the SERS method molecules are adsorbed onto metal nanoparticles to provide an enhanced signal. The goal of this project is to develop a method to reliably create silver nanoparticles using the Tollen’s Reaction, a common and simple reaction often utilized in the undergraduate chemistry courses. The nanoparticles produced in the reaction are then deposited onto a substrate such as glass or plastic. Throughout the project factors such as concentration, temperature and reaction time are manipulated to affect the size and shape of the silver nanoparticles. The resulting substrates were tested with Raman Spectroscopy to observe any signal enhancement. The substrates were characterized with Atomic Force Microscopy to determine the size and shape of the silver nanoparticles.
Poster Presentation

When & Where

Irwin Library 1st Floor