The excited state dynamics study of di‐2‐pyridylketone in the A‐band and B‐band absorptions by using resonance Raman spectroscopy, IR and UV–visible spectroscopy

Abstract

Excitation wavelengths of 282.4, 273.9 (A band), 252.7, 239.5 and 228.7 nm (B band) resonance Raman spectra were acquired for di-2-pyridylketone, and density functional calculations were carried out to help in the elucidation of the photo relaxation dynamics of A-band and B-band electronic transitions. The resonance Raman spectra show that the intensity pattern of the A band presents great difference from that of the B band, which indicate that the short-time A-band (S 0 !S 4 ) photo relaxation dynamics have substantial difference from that of B band (S 0 !S 10 ) . The overall picture of short-time dynamics and the vibronic coupling mechanisms are interpreted using Albrecht's theory.

Recent advances in linear and nonlinear Raman spectroscopy. Part VII

“…Wang and co‐workers examined the excited state dynamics of di‐2‐pyridylketone in the A‐band and B‐band absorptions by using RR spectroscopy, IR, and UV‐visible spectroscopy. The overall picture of short‐time dynamics and the vibronic coupling mechanisms are interpreted using Albrecht's theory . Weeks et al .…”