The prospects for studying photoswitching of amphiphilic spiropyrans using IR spectroscopy have been demonstrated. The comparison of analytical capability of the method in studying the photochromism of spirocompounds in the liquid phase and in the solid state using an attenuated total reflection sensor has been carried out. It has been shown that infrared spectroscopy allows to analyze the structural characteristics of photosensitive molecules in various isomeric forms, as well as to obtain information about their conformation and intermolecular interactions.
Kuznetsov et al. (Mon,) studied this question.