Retinal shows its true colours: photoisomerization action spectra of mobility-selected isomers of the retinal protonated Schiff base
NJA Coughlan, BD Adamson, L Gamon, K Catani, EJ Bieske
PHYSICAL CHEMISTRY CHEMICAL PHYSICS | ROYAL SOC CHEMISTRY | Published : 2015
Retinal is one of Nature's most important and widespread chromophores, exhibiting remarkable versatility in its function and spectral response, depending on its protein environment. Reliable spectroscopic and photochemical data for the isolated retinal molecule are essential for calibrating theoretical approaches that seek to model retinal's behaviour in complex protein environments. However, due to low densities and possible co-existence of multiple isomers, retinal is a challenging target for gas-phase investigations. Here, the photoisomerization behaviour of the trans isomer of the retinal protonated Schiff base (RPSB) is investigated in the gas phase by irradiating mobility-selected RPSB..View full abstract
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Awarded by Australian Research Council's Discovery Project funding scheme
This research was supported under the Australian Research Council's Discovery Project funding scheme (Project Numbers DP110100312 and DP120100100). We thank Prof. Matthew Bush for providing a modified version of the MOBCAL code with N<INF>2</INF> collision parameters described in ref. 23.