Ultrafast dynamics through conical intersections and intramolecular vibrational energy redistribution in styrene |
| |
Authors: | Nunn A D G Minns R S Spesyvtsev R Bearpark M J Robb M A Fielding H H |
| |
Institution: | Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, UK. |
| |
Abstract: | We report a femtosecond time-resolved photoelectron spectroscopy (TRPES) investigation of internal conversion in the first two excited singlet electronic states of styrene. We find that radiationless decay through an S(1)/S(0) conical intersection occurs on a timescale of ~4 ps following direct excitation to S(1) with 0.6 eV excess energy, but that the same process is significantly slower (~20 ps) if it follows internal conversion from S(2) to S(1) after excitation to S(2) with 0.3 eV excess energy (0.9 eV excess energy in S(1)). |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|