Fig. 3: Enantioselective co-assembly of L-TPEHis with Fmoc amino acids.
From: Double helical π-aggregate nanoarchitectonics for amplified circularly polarized luminescence
a Co-assembly of L-TPEHis with 20 Fmoc-protected essential amino acids led to selective recognition of L-Fmoc-alanine by CPL. b Fluorescence spectra of L-TPE, L-TPE/L-Fmoc, and L-TPE/D-Fmoc assemblies, the inserted figure is sample vials under UV light irradiation. c CD and d CPL spectra of TPE/Fmoc co-assemblies. L/L, L/D, D/D, D/L represent different chirality combinations of the two enantiomeric amino acids. e The emission decay curves of L-TPE/L-Fmoc, L-TPE/D-Fmoc, and L-TPE assemblies. f, g SEM images of L-TPE/L-Fmoc and L-TPE/D-Fmoc assemblies, respectively, the inserted figures at the bottom left corners are cartoon representations of the nanostructures. h Comparison of glum and QY values of L-TPE/L-Fmoc, L-TPE/D-Fmoc, and L-TPE assemblies. All the spectroscopic measurements are conducted by transferring the suspensions into cuvettes. Possible contributions from linear dichroism (LD) and linear birefringence (LB) caused by macroscopic anisotropy during the CD and CPL measurements were eliminated (Supplementary Fig. 16). TPEHis and FmocAla are abbreviated as TPE and Fmoc for clarity in Figs. 3–6.
