The optical properties of materials vary dramatically based on the number of molecules probed. In the case of an ensemble, the measurement is averaged over the probing volume and interesting dynamics can be overlooked. At the few molecule level, those phenomena become visible and the optical signatures can vary dramatically. This project focused on comparing different methods to synthesize nanoparticles capable of supporting sub-ensemble behavior as probed by surface-enhanced Raman spectroscopy (SERS). Two different methods were used to synthesize silver nanoparticles to control the nanoparticle size and shape, which was characterized using Transmission Electron Microscopy (TEM) and UV-Vis spectroscopy. Each nanoparticle synthetic method was then used in combination with rhodamine dye to determine their ability to support sub-ensemble Raman spectroscopy. The spectra obtained were examined for indications of sub-ensemble behavior.<br/>

Synthesis and characterization of silver nanoparticles for sub-ensemble surface-enhanced Raman spectroscopy

Macromolecular Chemistry: The Second Century

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ACS Spring 2020 National Meeting & Expo

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.