IR spectroscopy probes the rotations and the vibrations of molecules, the low-energy excitations of solids and many other low-energy phenomena occurring in condensed matter physics, chemistry, biophysics and materials science. Here we will present some examples of experiments that can experience a great advantage by IR synchrotron radiation sources in particular in the mid- and far-IR domain. FTIR spectroscopy and reflectivity measurements are non-destructive methods that can be applied to metallic, semiconductor or insulator systems returning accurate information on vibrtional and phonon spectra as a function of external parameters such as temperature or pressure. Far-IR spectroscopy with synchrotron radiation may be indeed used to investigate with a DAC cell pressure-driven insulator-to-metal transitions, one of the most intriguing phenomena exhibited by condensed matter. Another unique applications of IR SR is time-resolved IR spectroscopy and imaging in materials science and in biology. However, also combined time-resolved analysis (FTIR and SAXS) using two different radiations exciting the same system in a concurrent way is a powerful technique fundamental to understand complex phenomena.
In particular, we will show how the combination of SAXS and mid-IR spectroscopy correlates the solvent and the water evaporation kinetics explaining the structural organization of self-assembly mesostructured films. (© 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)