The pH Dependence of the Excitation and Emission Spectra of Umbelliferone**
Umbelliferone is a highly fluorescent molecule. The dependence of both the excitation and emission spectra are determined as a function of pH. The excitation spectra show a shift of the excitation wavelength for maximum fluorescence above pH 7. The emission spectra show a steadily increasing fluorescence intensity as pH decreases. Spectra and their analysis is presented.
Keyes*, Nia; Schwartz*, Abigail; and Gosnell, Donna L.
"The pH Dependence of the Excitation and Emission Spectra of Umbelliferone**,"
Georgia Journal of Science, Vol. 76, No. 1, Article 125.
Available at: https://digitalcommons.gaacademy.org/gjs/vol76/iss1/125