The ultrafast spectroscopic investigation of novel retinal proteins challenges existing notions
concerning the course of primary events in these natural photoreceptors. We review two …

The discovery of the light-driven sodium pump Krokinobacter eikastus rhodopsin 2 (KR2) in
2013 has changed the paradigm that cation transport in microbial rhodopsins is restricted to …

We present a systematic investigation of the structural relaxation in the excited state of
model retinal chromophores in the gas phase using the complete-active-space self …

A setup for fluorescence upconversion spectroscopy (FLUPS) is described which has 80 fs
temporal response (fwhm) for emission in the spectral range 425–750 nm. Broadband …

The retinal protonated Schiff-base (RPSB) in its all-trans form is found in bacterial
rhodopsins, whereas visual rhodopsin proteins host 11-cis RPSB. In both cases …

Femtosecond-resolved broadband fluorescence studies are reported for [M (bpy) 3] 2+(M=
Fe, Ru), RuN3 and RuN719 complexes in solution. We investigated the pump wavelength …

We present a femtosecond broad-band fluorescence up-conversion study of the vibrational
relaxation dynamics of two UV chromophores, 2, 5-diphenyloxazole (PPO) and para …

In the landscape of ultrafast spectroscopic tools, the deep-and near-ultraviolet ranges (200–
400 nm) have lagged behind due to the lack of tunability of both the pump and the probe …

The branching ratio of the excited-state population at the conical intersection between the
S1 and S0 energy surfaces (ΦCI) of a protonated Schiff base of all-trans retinal in protic and …

The drastically different reactivity of the retinal chromophore in solution compared to the
protein environment is poorly understood. Here, we show that the addition of a methyl group …