Thomas Renger

Frank Müh4
Julian Adolphs2
Mohamed El-Amine Madjet2
4Frank Müh
2Julian Adolphs
2Mohamed El-Amine Madjet
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Photoexcitation with blue light of the flavin chromophore in BLUF photoreceptors induces a switch into a metastable signaling state that is characterized by a red-shifted absorption maximum. The red shift is due to a rearrangement in the hydrogen bond pattern around Gln63 located in the immediate proximity of the isoalloxazine ring system of the(More)
In Photosystem I (PS I) long-wavelength chlorophylls (LWC) of the core antenna are known to extend the spectral region up to 750 nm for absorbance of light that drives photochemistry. Here we present clear evidence that even far-red light with wavelengths beyond 800 nm, clearly outside the LWC absorption bands, can still induce photochemical charge(More)
The experimentally obtained time-resolved fluorescence spectra of photosystem II (PS II) core complexes, purified from a thermophilic cyanobacterium Thermosynechococcus vulcanus, at 5-180 K are compared with simulations. Dynamic localization effects of excitons are treated implicitly by introducing exciton domains of strongly coupled pigments. Exciton(More)
A theory for the calculation of resonant and nonresonant hole-burning (HB) spectra of pigment-protein complexes is presented and applied to the water-soluble chlorophyll-binding protein (WSCP) from cauliflower. The theory is based on a non-Markovian line shape theory ( Renger and Marcus J. Chem. Phys. 2002 , 116 , 9997 ) and includes exciton delocalization,(More)
The spectral properties and dynamics of the fluorescence emission of photosystem II core complexes are investigated by single-molecule spectroscopy at 1.6 K. The emission spectra are dominated by sharp zero-phonon lines (ZPLs). The sharp ZPLs are the result of weak to intermediate exciton-vibrational coupling and slow spectral diffusion. For several data(More)
  • Jörg Megow, Thomas Körzdörfer, Thomas Renger, Mino Sparenberg, Sylke Blumstengel, Fritz Henneberger +1 other
  • 2015
The classification of excited states is the outcome of considerable amount of electronic structure computations on a single PTCDI molecule. DFT and TDDFT calculations were performed in utilizing the Gaussian 09 (Rev. A) program [3], the B3LYP functional [4] and a 6-311G(d,p) basis-set. The optimized ground-state geometry of PTCDI was verified using(More)
We provide a minimal model for a structure-based simulation of excitation energy transfer in pigment–protein complexes (PPCs). In our treatment, the PPC is assembled from its building blocks. The latter are defined such that electron exchange occurs only within, but not between these units. The variational principle is applied to investigate how the Coulomb(More)