Two-Dimensional Correlation Raman Spectroscopy Study of Temperature-Dependent Conformational Variations for Azobenzene Derivatives

摘要

In comparing with IR spectroscopy, Raman spectroscopy is much more powerful for conformation and structural characterization for the azobenzene derivatives because the frequency of the -N=N- stretching band in azobenzene derivatives can be detected easily by Raman spectroscopy. [1-2] Temperature-dependent Raman and IR spectral variations of azobenzene-containing long chain fatty acids (nAmH, n=8, 12; m=3,5) in the solid state has been investigated as an 2D Raman and 2D IR-Raman analysis. Fig. 1 shows the three-dimensional stacked-trace of the Raman spectra of 8A5H in solid state at different temperatures.