Real-Time Monitoring of Structural Evolution in Cis-Stilbene Photoisomerization by Ultrafast Time-Domain Raman Spectroscopy

摘要

We studied the vibrational structure of reactive S_1 cis-stilbene through wavepacket motions generated impulsively at various delay-times. They showed gradual frequency downshift, demonstrating highly anharmonic nature of the excited-state potential and structural evolution with photoisomerization.