Theoretical formulation and simulation of electronic sum-frequency generation spectroscopy
Journal
Journal of Physical Chemistry C
Journal Volume
117
Journal Issue
45
Pages
23797-23805
Date Issued
2013
Author(s)
Abstract
Sum-frequency generation (SFG) spectroscopy is a powerful tool for not only identifying molecular species but also analyzing orientation configurations on a surface/interface. In this Article, we presented reformulation of the theoretical framework of electronic SFG spectroscopy, the signal of which could be greatly enhanced by tuning one or two incident beam frequencies resonant with electronic excited states. Simulated electronic SFG spectra resonant at the sum frequency of a pair of coumarin-derivative pH-indicator surfactant molecules, 4-methyl-7-hydroxycoumarin and its anionic counterpart (MHC/MHC�V), floating on the water surface were carried out as a demonstration.
SDGs
Type
journal article