CHED 1455 |
| The Raman spectra of solid kojic acid and the surface-enhanced Raman scattering (SERS) spectra of 3 mM kojic acid in colloidal silver nanoparticles over a pH range from 4.8 to 8.8 were measured. A DeltaNu 200A Raman spectrometer (633 nm excitation, 3 mW laser power) was used in all of the experiments. Gaussian XX was used to calculate vibrational frequencies for kojic acid using density functional theory at the B3LYP level with a 6-311G* basis set. The results of these calculations were used to make band assignments in the Raman and SERS spectra. |
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Undergraduate Research Poster Session: Physical Chemistry
2:00 PM-4:00 PM, Monday, March 26, 2007 Hyatt Regency Chicago -- Riverside Center, Poster
Division of Chemical Education |