(Invited) Recent Progress in the Study of Single Molecule Electrochemistry Using Surface-Enhanced and Tip-Enhanced Raman Spectroscopy
In the first part of this lecture, I will provide some background material on the basic physical concepts underlying molecular plasmonics with an emphasis on surface-enhanced Raman spectroscopy (SERS), localized surface plasmon resonance (LSPR) spectroscopy, and tip-enhanced Raman spectroscopy (TERS).
In the second part of this lecture, I will focus in on our most recent work in studying single molecule electrochemistry using surface-enhanced and tip-enhanced Raman spectroscopy. I will first describe the development of an instrument that has the capability of combining tip-enhanced Raman spectroscopy at the solid/liquid interface with scanning electrochemical microscopy (SECM). Next the single molecule Raman spectroelectrochemistry of Rhodamine 6G (R6G) at acetonitrile/Ag interface will be discussed. Finally, I will discuss the path forward toward the goal of understanding heterogeneous electron transfer at the single molecule level.