Journal
JOURNAL OF CHEMICAL PHYSICS
Volume 139, Issue 3, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4813005
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Funding
- Engineering and Physical Sciences Research Council (EPSRC) [EP/G041717/1]
- Heriot-Watt University
- Engineering and Physical Sciences Research Council [1155678, EP/G041717/1] Funding Source: researchfish
- EPSRC [EP/G041717/1] Funding Source: UKRI
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Time-resolved photoelectron imaging was used to investigate the relaxation dynamics of electronically excited aniline in the gas-phase following ultraviolet irradiation in the 273-266 nm region. We find that at all wavelengths studied, excitation is predominantly to the long-lived (> 1 ns) S-1(pi pi*) state, which exhibits ultrafast intramolecular vibrational redistribution on a <1 ps timescale. At excitation wavelengths centred on resonant transitions in the aniline absorption spectrum that have previously been assigned to the higher lying S-2(3s/pi sigma*) state, we also see clear evidence of this state playing a role in the dynamics. However, we see no indication of any non-adiabatic coupling between the S-1(pi pi*) and S-2(3s/pi sigma*) states over the range of excitation wavelengths studied. (C) 2013 AIP Publishing LLC.
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