Raman signature of polyamorphism in triphenyl phosphite

Abstract

The polyamorphism of triphenyl phosphite has been investigated from a low-frequency Raman-scattering study. Interesting features about glaciation processes have been revealed from a study of the boson peak and an analysis of the Raman susceptibility in the glacial and crystalline states. The very close correspondence between the phonon peaks observed in the crystal and the Raman spectrum of the glacial state, as well as some contradictions about the fragility of the glacial state, if it is considered as amorphous, lead us to favor the description of the glacial state in terms of nanocrystallized domains.