Time-resolved Raman spectra of ring-stretching modes of benzene derivatives under laser-driven shock compression at 1 GPa

Raman spectra were collected from benzene, toluene and nitrobenzene, under laser-driven shock compression at approximately 1 GPa. Raman peaks attributed to the ring-breathing and ring-vibrational mode showed a blue shift. The magnitudes of the frequency shift show a systematic dependence on substituents. The magnitude of the shift of the ring-breathing mode decreased in the order of benzene, nitrobenzene, toluene, while that of the ring-vibrational (distortion along an axis) increased.