Chris Bennett, a fourth year graduate student in Dr. Jon Camden’s group, published a paper titled “Probing Two-Photon Properties of Molecules: Large Non-Condon Effects Dominate the Resonance Hyper-Raman Scattering of Rhodamine 6G” in JACS, the Journal of the American Chemical Society. Founded in 1879, JACS is the flagship journal of the American Chemical Society and the preeminent journal in the field.
Bennett and Camden have worked on this project with their collaborators, Dr. Lasse Jensen and Daniel Silverstein at Penn State University, for the past two years. They compared experimentally measured resonance hyper-Raman spectra to first-principles calculations of the resonance hyper-Raman intensity and found excellent agreement between the two. The finding not only demonstrated that first-principles calculation of hyper-Raman intensities are now possible for large molecules such as R6G, but also indicated that resonance hyper-Raman will now be a routine aid for probing multiphoton processes.
Bennett explains the importance of his work: “As two-photon spectroscopy gains popularity, it is important to fully understand the mechanisms and principles that guide it. Our explorations of hyper Raman spectroscopy are an attempt to understand those principles. We are working to uncover the mysteries in this aspect of science, to help bring it into the realm of popular scientific methods.”
Earlier this year, Bennett also published an article, “Probing One-Photon Inaccessible Electronic States with High Sensitivity,” in ChemPhysChem, a scientific journal published by John Wiley & Sons since 2000.
Prior to joining the Camden group, Bennett obtained his Bachelor of Science degree from Wofford College in 2003 and his Master of Arts degree from Wake Forest University in 2004. He also serves as the secretary for the East Tennessee Section of the American Chemical Society.