The ultrafast photoresponse of small, often cyclic peptides with azobenzene units has widely
been investigated during the last years. Both the photoisomerization of the optical switch as
well as the different conformational states of the peptide moiety can be characterized by
optical spectroscopy. Here, we investigate the fast photoisomerization dynamics of an α-
helical 30mer azobenzene peptide. The peptide is based on a construct used for the
assembly of di-heme-binding maquettes. The femtosecond to picosecond photodynamics for …