Fig. 5
Multi-step energy migration among four perylene moieties. a Sequence design to investigate multi-step energy migration. b Fluorescence emission spectra of 4E/cQ, 1E-1/cQ, 1E-2/cQ, 1E-3/cQ and 1E-4/cQ. Sum of spectra of 1E-1/cQ, 1E-2/cQ, 1E-3/cQ and 1E-4/cQ is also shown. c Fluorescence lifetimes of 4E/cQ and 4E/cN duplexes. d Simulated decay curve of 4E/cQ. Time evolution of excited population of each perylene is also shown. Numbering of perylenes is schematically illustrated in the inset. e Molecular modelling of 4E/cQ duplex. Perylene and anthraquinone moieties are shown in CPK model and are coloured in green and red, respectively
