Surface‐enhanced resonance hyper‐Raman (SERHR) spectroscopy of photochromatic molecules

Abstract
The surface‐enhanced resonance Raman and surfaces enhanced hyper‐Raman (SERHR) spectra of a photochromatic indigoid dye were obtained. The influence of stationary additional lighting (AL) at the absorption bands of the photoisomers on the SERHR intensities was observed. This is connected not only with the changes in the photoisomer concentration on the silver surface under AL but also with different scattering intensities of the resonance hyper‐Raman spectra of isomers due to their different symmetries.