The SERS spectrum of 1,2-diaminoanthraquinone studied on silver colloid

The outstanding solvatochromic behavior of 1,2-DAAQ, as shown by its UV-Vis spectra in several solvents, is not reflected in the SERS spectra at two different solvents (dichloromethane and acetonitrile) that show slight differences both in frequency values and relative intensities.