JOURNAL OF CHEMICAL PHYSICS, v.113, no.22, pp.10051 - 10055
Abstract
Resonant two-photon ionization (R2PI) and laser induced fluorescence (LIF) techniques were used to obtain the electronic spectra of the jet-cooled DNA base adenine. The spectrum consisted of two bands of the nπ* and ππ* characters. The vibronic mixing between the two states resulted in the broad absorption whose onset was located 1100 cm -1 above the nπ* origin. The presence of these electronically states revealed the presence of vibronic mixing.