Vibrational-state dependent decay dynamics of 2-pyridone excited to the S1 electronic state

The S-1((1)pi pi*) state decay dynamics of 2-pyridone excited around the 00(0) band origin is investigated using femtosecond time-resolved photoelectron imaging technique. At a pump wavelength of 334.0 nm, the vibrational ground state and a few low energy vibrational states covered by the bandwidth of the pump laser pulses are excited. The lifetimes of the vibrational states show strong dependence on the vibrational energy and mode. A quantum beat between two lowest energy vibrational states is also observed. This study provides quantitative information about the vibrational-state dependent lifetime of the S-1 state of 2-pyridone.

Automated summary

This study investigates the decay dynamics of the S-1((1)pi pi*) state of 2-pyridone using femtosecond time-resolved photoelectron imaging technique. It finds that the lifetime of the vibrational states strongly depends on the vibrational energy and mode, and observes a quantum beat between the two lowest energy vibrational states.